Datasheet Voltage Detector IC Series Standard CMOS Voltage Detector IC BD48xxx series BD49xxx series General Description ROHM's BD48xxx and BD49xxx series are highly accurate, low current consumption reset IC series. The line up includes BD48xxx devices with N channel open drain output and BD49xxx devices with CMOS output. The devices are available for specific detection voltages ranging from 2.3V to 6.0V in increments of 0.1V. Key Specifications Detection voltage: 2.3V to 6.0V (Typ.), 0.1V steps High accuracy detection voltage: 1.0% Ultra-low current consumption: 0.9A (Typ.) Operating temperature range: Package SSOP5: SSOP3: VSOF5: Features High accuracy detection Ultra-low current consumption Two output types (Nch open drain and CMOS output) Wide Operating temperature range Very small and low height package Package SSOP5 is similar to SOT-23-5 (JEDEC) Package SSOP3 is similar to SOT-23-3 (JEDEC) -40C to +105C 2.90mm x 2.80mm x 1.15mm 2.90mm x 2.80mm x 1.15mm 1.60 mm x 1.60mm x 0.60mm Applications Circuits using microcontrollers or logic circuits that require a reset. Typical Application Circuit VDD1 VDD2 VDD1 RL BD48xxx RST Micro controller CL GND (Open Drain Output type BD48xxx series ( Capacitor for noise filtering GND (CMOS Output type BD49xxx series This product is not designed protection against radioactive rays. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211114001 Micro controller CL ( Capacitor for noise filtering Product structure:Silicon monolithic integrated circuit RST BD49xxx 1/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Connection Diagram N.C. SSOP5 N.C. VSOF5 VDD 5 Marking Lot. No Marking VOUT VOUT VDD GND TOP VIEW GND 4 1 2 3 SUB N.C Lot. No TOP VIEW Pin Descriptions SSOP5 VSOF5 PIN No. Symbol Function PIN No. Symbol Function 1 VOUT Reset Output 1 VOUT Reset Output 2 VDD Power Supply Voltage 2 SUB Substrate* 3 GND GND N.C. Unconnected Terminal N.C. GND Unconnected Terminal 4 3 4 5 N.C. Unconnected Terminal 5 VDD Power Supply Voltage GND *Connect the substrate to GND. SSOP3(1pin GND) SSOP3(3pin GND) VDD GND 3 3 Marking Marking Lot. No 2 1 VOUT GND Lot. No 2 1 VDD VOUT TOP VIEW TOP VIEW Pin Descriptions PIN No. SSOP3-1 Symbol Function PIN No. GND 1 1 GND 2 VOUT Reset Output 3 VDD Power Supply Voltage SSOP3-2 Symbol Function VOUT Reset Output 2 VDD Power Supply Voltage 3 GND GND z Ordering Information B D Part Number x x Output Type 48 : Open Drain 49 : CMOS x Package1 x x x Reset Voltage Value Package2 23 : 2.3V 0.1V step 60 : 6.0V Package1 E K L Blank Blank Package2 G G G FVE G Package name SSOP5 SSOP3(1pin GND) SSOP3(3pin GND) VSOF5 SSOP5 - T R Packageing and forming specification Embossed tape and reel TR :The pin number 1is the upper right :SSOP5 :VSOF5 TL :The pin number 1is the upper left :SSOP3-1 :SSOP3-2 note) Please be new and, in hope of SSOP5, choose the package 1 by "E" and package 2" G." www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 2/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series SSOP5 5 4 1 2 0.2Min. +0.2 1.6 -0.1 2.80.2 <Tape and Reel information> +6 4 -4 2.90.2 3 Tape Embossed carrier tape Quantity 3000pcs Direction of feed TR The direction is the 1pin of product is at the upper right when you hold ( reel on the left hand and you pull out the tape on the right hand 1pin +0.05 0.13 -0.03 +0.05 0.42 -0.04 0.050.05 1.10.05 1.25Max. ) 0.95 0.1 Direction of feed Reel (Unit : mm) Order quantity needs to be multiple of the minimum quantity. VSOF5 4 (MAX 1.28 include BURR) 1.2 0.05 1.6 0.05 5 0.2MAX 1.60.05 1.00.05 1 2 3 0.6MAX 0.130.05 0.220.05 0.5 (Unit : mm) SSOP3 2.920.1 44 L 0.450.15 1.60.1 2.80.15 3 1 2 1.10.05 1.25MAX 0.150.05 0.95 0.40.1 1.90.1 www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 3/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Lineup Marking EW EV EU ET ES ER EQ EP EN EM EL EK EJ EH EG EF EE ED EC Marking Cm Ck Ch Cg Cf Ce Cd Cc Cb Ca By Br Bp Bn Bm Bk Bh Bg Bf Detection Voltage 6.0V 5.9V 5.8V 5.7V 5.6V 5.5V 5.4V 5.3V 5.2V 5.1V 5.0V 4.9V 4.8V 4.7V 4.6V 4.5V 4.4V 4.3V 4.2V Detection Voltage 6.0V 5.9V Part Number BD4860 BD4859 BD4858 BD4857 BD4856 BD4855 BD4854 BD4853 BD4852 BD4851 BD4850 BD4849 BD4848 BD4847 BD4846 BD4845 BD4844 BD4843 BD4842 EB EA DV DU DT DS DR DQ DP DN DM DL DK DJ DH DG DF DE DD Part Marking Number Be BD48E60 BD48E59 5.8V BD48E58 5.7V BD48E57 5.6V BD48E56 5.5V BD48E55 5.4V BD48E54 5.3V BD48E53 5.2V BD48E52 5.1V BD48E51 5.0V BD48E50 4.9V BD48E49 4.8V BD48E48 4.7V BD48E47 4.6V BD48E46 4.5V BD48E45 4.4V BD48E44 4.3V BD48E43 BD48E42 4.2V Marking Bd Bc Bb Ba Ay Ar Ap An Am Ak Ah Ag Af Ae Ad Ac Ab Aa Detection Voltage 4.1V 4.0V 3.9V 3.8V 3.7V 3.6V 3.5V 3.4V 3.3V 3.2V 3.1V 3.0V 2.9V 2.8V 2.7V 2.6V 2.5V 2.4V 2.3V Part Number BD4841 BD4840 BD4839 BD4838 BD4837 BD4836 BD4835 BD4834 BD4833 BD4832 BD4831 BD4830 BD4829 BD4828 BD4827 BD4826 BD4825 BD4824 BD4823 Detection Voltage 4.1V Part Number BD48E41 4.0V BD48E40 3.9V BD48E39 3.8V BD48E38 3.7V BD48E37 3.6V BD48E36 3.5V BD48E35 3.4V BD48E34 3.3V BD48E33 3.2V BD48E32 3.1V BD48E31 3.0V BD48E30 2.9V BD48E29 2.8V BD48E28 2.7V BD48E27 2.6V BD48E26 2.5V BD48E25 2.4V BD48E24 2.3V BD48E23 Marking GW GV GU GT GS GR GQ GP GN GM GL GK GJ GH GG GF GE GD GC Marking Ff Fe Fd Fc Fb Fa Ey Er Ep En Em Ek Eh Eg Ef Ee Ed Ec Eb www.rohm.com (c) 2012 ROHM Co., Ltd. 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TSZ2211115001 4/13 Detection Voltage 6.0V 5.9V 5.8V 5.7V 5.6V 5.5V 5.4V 5.3V 5.2V 5.1V 5.0V 4.9V 4.8V 4.7V 4.6V 4.5V 4.4V 4.3V 4.2V Part Number BD4960 BD4959 BD4958 BD4957 BD4956 BD4955 BD4954 BD4953 BD4952 BD4951 BD4950 BD4949 BD4948 BD4947 BD4946 BD4945 BD4944 BD4943 BD4942 Detection Voltage 6.0V Part Number BD49E60 5.9V BD49E59 5.8V BD49E58 5.7V BD49E57 5.6V BD49E56 5.5V BD49E55 5.4V BD49E54 5.3V BD49E53 5.2V BD49E52 5.1V BD49E51 5.0V BD49E50 4.9V BD49E49 4.8V BD49E48 4.7V BD49E47 4.6V BD49E46 4.5V BD49E45 4.4V BD49E44 4.3V BD49E43 4.2V BD49E42 Marking GB GA FV FU FT FS FR FQ FP FN FM FL FK FJ FH FG FF FE FD Marking Ea Dy Dr Dp Dn Dm Dk Dh Dg Df De Dd Dc Db Da Cy Cr Cp Cn Detection Voltage 4.1V 4.0V 3.9V 3.8V 3.7V 3.6V 3.5V 3.4V 3.3V 3.2V 3.1V 3.0V 2.9V 2.8V 2.7V 2.6V 2.5V 2.4V 2.3V Part Number BD4941 BD4940 BD4939 BD4938 BD4937 BD4936 BD4935 BD4934 BD4933 BD4932 BD4931 BD4930 BD4929 BD4928 BD4927 BD4926 BD4925 BD4924 BD4923 Detection Voltage 4.1V Part Number BD49E41 4.0V BD49E40 3.9V BD49E39 3.8V BD49E38 3.7V BD49E37 3.6V BD49E36 3.5V BD49E35 3.4V BD49E34 3.3V BD49E33 3.2V BD49E32 3.1V BD49E31 3.0V BD49E30 2.9V BD49E29 2.8V BD49E28 2.7V BD49E27 2.6V BD49E26 2.5V BD49E25 2.4V BD49E24 2.3V BD49E23 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Marking Cm Ck Ch Cg Cf Ce Cd Cc Cb Ca By Br Bp Bn Bm Bk Bh Bg Bf Marking Kb Ka Hy Hr Hp Hn Hm Hk Hh Hg Hf He Hd Hc Hb Ha Gy Gr Gp Datasheet BD49xxx series Detection Voltage Part Number Marking 6.0V BD48K60 5.9V BD48K59 5.8V BD48K58 5.7V BD48K57 5.6V BD48K56 5.5V BD48K55 5.4V BD48K54 5.3V BD48K53 5.2V BD48K52 5.1V BD48K51 5.0V BD48K50 4.9V BD48K49 4.8V BD48K48 4.7V BD48K47 4.6V BD48K46 4.5V BD48K45 4.4V BD48K44 4.3V BD48K43 4.2V BD48K42 Be Bd Bc Bb Ba Ay Ar Ap An Am Ak Ah Ag Af Ae Ad Ac Ab Aa Detection Voltage Part Number Marking 6.0V BD48L60 5.9V BD48L59 5.8V BD48L58 5.7V BD48L57 5.6V BD48L56 5.5V BD48L55 5.4V BD48L54 5.3V BD48L53 5.2V BD48L52 5.1V BD48L51 5.0V BD48L50 4.9V BD48L49 4.8V BD48L48 4.7V BD48L47 4.6V BD48L46 4.5V BD48L45 4.4V BD48L44 4.3V BD48L43 4.2V BD48L42 Gn Gm Gk Gh Gg Gf Ge Gd Gc Gb Ga Fy Fr Fp Fn Fm Fk Fh Fg Detection Voltage Part Number Marking 4.1V BD48K41 4.0V BD48K40 3.9V BD48K39 3.8V BD48K38 3.7V BD48K37 3.6V BD48K36 3.5V BD48K35 3.4V BD48K34 3.3V BD48K33 3.2V BD48K32 3.1V BD48K31 3.0V BD48K30 2.9V BD48K29 2.8V BD48K28 2.7V BD48K27 2.6V BD48K26 2.5V BD48K25 2.4V BD48K24 2.3V BD48K23 Ff Fe Fd Fc Fb Fa Ey Er Ep En Em Ek Eh Eg Ef Ee Ed Ec Eb Detection Voltage Part Number Marking 4.1V BD48L41 4.0V BD48L40 3.9V BD48L39 3.8V BD48L38 3.7V BD48L37 3.6V BD48L36 3.5V BD48L35 3.4V BD48L34 3.3V BD48L33 3.2V BD48L32 3.1V BD48L31 3.0V BD48L30 2.9V BD48L29 2.8V BD48L28 2.7V BD48L27 2.6V BD48L26 2.5V BD48L25 2.4V BD48L24 2.3V BD48L23 Np Nn Nm Nk Nh Ng Nf Ne Nd Nc Nb Na My Mr Mp Mn Mm Mk Mh www.rohm.com (c) 2012 ROHM Co., Ltd. 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TSZ2211115001 5/13 Detection Voltage Part Number 6.0V BD49K60 5.9V BD49K59 5.8V BD49K58 5.7V BD49K57 5.6V BD49K56 5.5V BD49K55 5.4V BD49K54 5.3V BD49K53 5.2V BD49K52 5.1V BD49K51 5.0V BD49K50 4.9V BD49K49 4.8V BD49K48 4.7V BD49K47 4.6V BD49K46 4.5V BD49K45 4.4V BD49K44 4.3V BD49K43 4.2V BD49K42 Detection Voltage Part Number 6.0V BD49L60 5.9V BD49L59 5.8V BD49L58 5.7V BD49L57 5.6V BD49L56 5.5V BD49L55 5.4V BD49L54 5.3V BD49L53 5.2V BD49L52 5.1V BD49L51 5.0V BD49L50 4.9V BD49L49 4.8V BD49L48 4.7V BD49L47 4.6V BD49L46 4.5V BD49L45 4.4V BD49L44 4.3V BD49L43 4.2V BD49L42 Marking Ea Dy Dr Dp Dn Dm Dk Dh Dg Df De Dd Dc Db Da Cy Cr Cp Cn Marking Mg Mf Me Md Mc Mb Ma Ky Kr Kp Kn Km Kk Kh Kg Kf Ke Kd Kc Detection Voltage Part Number 4.1V BD49K41 4.0V BD49K40 3.9V BD49K39 3.8V BD49K38 3.7V BD49K37 3.6V BD49K36 3.5V BD49K35 3.4V BD49K34 3.3V BD49K33 3.2V BD49K32 3.1V BD49K31 3.0V BD49K30 2.9V BD49K29 2.8V BD49K28 2.7V BD49K27 2.6V BD49K26 2.5V BD49K25 2.4V BD49K24 2.3V BD49K23 Detection Voltage Part Number 4.1V BD49L41 4.0V BD49L40 3.9V BD49L39 3.8V BD49L38 3.7V BD49L37 3.6V BD49L36 3.5V BD49L35 3.4V BD49L34 3.3V BD49L33 3.2V BD49L32 3.1V BD49L31 3.0V BD49L30 2.9V BD49L29 2.8V BD49L28 2.7V BD49L27 2.6V BD49L26 2.5V BD49L25 2.4V BD49L24 2.3V BD49L23 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Absolute Maximum Ratings (Ta=25C) Parameter Power Supply Voltage Nch Open Drain Output Output Voltage CMOS Output *1*3 Power SSOP5 *2*3 Dissipation VSOF5 Operating Temperature Ambient Storage Temperature Symbol VDD-GND Limits -0.3 to +10 GND-0.3 to +10 GND-0.3 to VDD+0.3 540 210 -40 to +105 -55 to +125 VOUT Pd Topr Tstg Unit V V mW C C *1 Use above Ta=25C results in a 5.4mW loss per degree. *2 Use above Ta=25C results in a 2.1mW loss per degree. *3 When a ROHM standard circuit board (70mmx70mmx1.6mm glass epoxy board) is mounted. Electrical Characteristics (Unless Otherwise Specified Ta=-40 to 105C) Parameter Symbol Condition Detection Voltage VDET RL=470k, VDD=HAEL Output Delay Time "LAEH" tPLH CL=100pF R=100k Vout=GNDAE50% Circuit Current when ON ICC1 Circuit Current when OFF ICC2 Operating Voltage Range VOPL `Low'Output Current (Nch) IOL `High'Output Current (Pch) (BD49xxx Series) IOH www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 6/13 Limit Typ. VDET(T) Max. VDET(T) x1.01 Unit V *2 VDET=2.3-3.1V VDET=3.2-4.2V VDD=VDET-0.2V *1 VDET=4.3-5.2V VDET=5.3-6.0V VDET=2.3-3.1V VDET=3.2-4.2V VDD=VDET+2.0V *1 VDET=4.3-5.2V VDET=5.3-6.0V VOL0.4V, Ta=25 to 105C, RL=470k VOL0.4V, Ta=-40 to 25C, RL=470k VDS=0.5V, VDD=1.5V, VDET=2.3-6.0V VDS=0.5V, VDD=2.4V, VDET=2.7-6.0V VDS=0.5V, VDD=4.8V, VDET=2.3-4.2V VDS=0.5V, VDD=6.0V, VDET=4.3-5.2V VDS=0.5V, VDD=8.0V, VDET=5.3-6.0V Leak Current when OFF VDD=VDS=10V Ileak (BD48xxx Series) Ta=-40C to 105C Detection Voltage VDET/T (Designed Guarantee) Temperature coefficient Hysteresis Voltage VDET VDD=LAEHAEL VDET(T) : Standard Detection Voltage(2.3V to 6.0V, 0.1V step) RL: Pull-up resistor to be connected between VOUT and power supply. CL: Capacitor to be connected between VOUT and GND. Designed Guarantee. (Outgoing inspection is not done on all products.) *1 Guarantee is Ta=25C. *2 tPLH:VDD=(VDET typ.-0.5V)AE(VDET typ.+0.5V) TSZ2211115001 *1 Min. VDET(T) x0.99 *1 - - 100 0.95 1.20 0.4 2.0 0.7 0.9 1.1 0.51 0.56 0.60 0.66 0.75 0.80 0.85 0.90 1.0 4.0 1.4 1.8 2.2 1.53 1.68 1.80 1.98 2.25 2.40 2.55 2.70 - - - 0.1 A - 100 360 ppm/C VDETx0.03 VDETx0.05 VDETx0.08 s A A V mA mA V TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Block Diagrams VDD VOUT Vref GND Fig.1 BD48xxx series VDD VOUT Vref GND Fig.2 BD49xxx series www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 7/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Typical Performance Curves "LOW" OUTPUT CURRENT IOL [mA] 2.0 CIRCUIT CURRENT IDD[A] BD48x42 BD4842G/FVE BD49x42 1.5 1.0 0.5 0.0 0 1 2 3 4 5 6 7 8 9 10 20 BD4842G/FVE BD48x42 BD49x42 15 10 VDD =2.4V 5 VDD =1.2V 0 0.0 1.0 1.5 2.0 2.5 DRAIN-SOURCE VOLTAGE VDS[V] VDD SUPPLY VOLTAGE VDD[V] Fig.3 Circuit Current Fig.4 "Low" Output Current 45 9 40 BD4942G/FVE BD49x42 OUTPUT VOLTAGE VOUT [V] "HIGH" OUTPUT CURRENT IOH[mA] 0.5 35 30 25 20 VDD=8.0V 15 VDD=6.0V 10 5 VDD=4.8V 0 1 2 3 4 5 6 6 5 4 3 Ta=25 2 1 Ta=25 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 DRAIN-SOURCE VOLTAGE VDS[V] VDD SUPPLY VOLTAGE VDD [V] Fig.5 "High" Output Current Fig.6 I/O Characteristics www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 BD49x42 7 0 0 BD4842G/FVE BD48x42 8 8/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 Datasheet BD49xxx series 1.0 0.8 BD48x42 BD48x42x BD4842G/FVE 5.4 BD48x42x BD48x42 BD4842G/FVE DETECTION VOLTAGE: VDET[V] OUTPUT VOLTAGE : VOUT [V] BD48xxx series BD49x42 0.6 0.4 0.2 BD49x42 5.0 Low to High(VDET+VDET 4.6 4.2 High to Low(VDET 3.8 3.4 0.0 0 1 0.5 2 1.5 2.5 3.0 -40 SUPPLY VOLTAGE : [V] CIRCUIT CURRENT WHEN OFF I DD2[A] CIRCUIT CURRENT WHEN ON IDD1[A] 1.5 BD48x42x BD4842G/FVE BD48x42 BD49x42 1.0 0.5 0 20 40 60 80 100 80 Ta[] 1.5 BD48x42x BD4842G/FVE BD48x42 BD49x42 1.0 0.5 0.0 -40 -20 0 20 40 60 80 100 TEMPERATURE Ta[] TEMPERATURE Ta[] Fig.9 Circuit Current when ON Fig.10 Circuit Current when OFF www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 40 Fig.8 Detection Voltage Release Voltage Fig.7 Operating Limit Voltage 0.0 -40 -20 0 TEMPERATURE : 9/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series 1.5 MINIMUM OPERATION VOLTAGE VOPL[V] BD4842G/FVE BD48x42x BD48x42 BD49x42 1.0 0.5 0.0 -40 -20 0 20 40 60 80 100 TEMPERATURE Ta[] Fig.11 Operating Limit Voltage www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 10/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Application Information Explanation of Operation For both the open drain type (Fig.12) and the CMOS output type (Fig.13), the detection and release voltages are used as threshold voltages. When the voltage applied to the VDD pins reaches the applicable threshold voltage, the VOUT terminal voltage switches from either "High" to "Low" or from "Low" to "High". Please refer to the Timing Waveform and Electrical Characteristics for information on hysteresis. Because the BD48xxx series uses an open drain output type, it is possible to connect a pull-up resistor to VDD or another power supply [The output "High" voltage (VOUT) in this case becomes VDD or the voltage of the other power supply]. VDD R1 VDD R1 RL Vref Vref Q2 VOUT VOUT R2 R2 Q1 Q1 R3 R3 GND GND Fig.12 (BD48xxx series Internal Block Diagram) Fig.13 (BD49xxx series Internal Block Diagram) Reference Data Examples of Leading (tPLH) and Falling (tPHL) Output Part Number tPLH (s) tPHL (s) BD48x45 39.5 87.8 BD49x45 32.4 52.4 VDD=4.3VAE5.1V VDD=5.1VAE4.3V *This data is for reference only. The figures will vary with the application, so please confirm actual operating conditions before use. Timing Waveform Example: the following shows the relationship between the input voltages VDD and the output voltage VOUT when the input power supply voltage VDD is made to sweep up and sweep down (the circuits are those in Fig.12 and 13). 1 VDD VDET+VDET VDET 0V VOPL VOUT VOH tPHL tPLH tPLH tPHL VOL Fig.14 Timing Waveform When the power supply is turned on, the output is unsettled from after over the operating limit voltage (VOPL) until tPHL. Therefore it is possible that the reset signal is not valid when the rise time of VDD is faster than tPHL. 2 When V DD is greater than VOPL but less than the reset release voltage (VDET + VDET), the output voltages will switch to Low. 3 If V DD exceeds the reset release voltage (VDET + VDET), then VOUT switches from L to H. 4 If V DD drops below the detection voltage (VDET) when the power supply is powered down or when there is a power supply fluctuation, VOUT switches to L (with a delay of tPHL). 5 The potential difference between the detection voltage and the release voltage is known as the hysteresis width (VDET). The system is designed such that the output does not flip-flop with power supply fluctuations within this hysteresis width, preventing malfunctions due to noise. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 11/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Circuit Applications Examples of a common power supply detection reset circuit. VDD1 VDD2 RL BD48xxx RST Micro controller Application examples of BD48xxx series (Open Drain output type) and BD49xxx series (CMOS output type) are shown below. CASE1: the power supply of the microcontroller (VDD2) differs from the power supply of the reset detection (VDD1). Use an open drain output type (BD48xxx) device with a load resistance RL attached as shown in figure 15. CL ( capacitor is for noise filtering GND CASE2: the power supply of the microcontroller (VDD1) is same as the power supply of the reset detection (VDD1). Use a CMOS output type (BD49xxx) device or an open drain device with a pull up resistor between output and VDD1. Fig.15 Open Drain Output Type VDD1 Micro RST controller BD49xxx CL ( capacitor is for filtering When a capacitance CL for noise filtering is connected to the VOUT pin (the reset signal input terminal of the microcontroller), please take into account the waveform of the rise and fall of the output voltage (VOUT). The Electrical characteristics were measured using RL= 470k and CL = 100pF. GND Fig.16 CMOS Output Type www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 12/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 BD48xxx series Datasheet BD49xxx series Operational Notes 1 . Absolute maximum range Absolute Maximum Ratings are those values beyond which the life of a device may be destroyed. We cannot be defined the failure mode, such as short mode or open mode. Therefore a physical security countermeasure, like fuse, is to be given when a specific mode to be beyond absolute maximum ratings is considered. 2 . GND potential GND terminal should be a lowest voltage potential every state. Please make sure all pins, which are over ground even if, include transient feature. 3 . Electrical Characteristics Be sure to check the electrical characteristics that are one the tentative specification will be changed by temperature, supply voltage, and external circuit. 4 . Bypass Capacitor for Noise Rejection Please put into the capacitor of 1F or more between VDD pin and GND, and the capacitor of about 1000pF between VOUT pin and GND, to reject noise. If extremely big capacitor is used, transient response might be late. Please confirm sufficiently for the point. 5 . Short Circuit between Terminal and Soldering Don't short-circuit between Output pin and VDD pin, Output pin and GND pin, or VDD pin and GND pin. When soldering the IC on circuit board, please be unusually cautious about the orientation and the position of the IC. When the orientation is mistaken the IC may be destroyed. 6 . Electromagnetic Field Mal-function may happen when the device is used in the strong electromagnetic field. 7 . The VDD line inpedance might cause oscillation because of the detection current. 8 . A VDD -GND capacitor (as close connection as possible) should be used in high VDD line impedance condition. 9 . Lower than the mininum input voltage makes the VOUT high impedance, and it must be VDD in pull up (VDD) condition. 10. This IC has extremely high impedance terminals. Small leak current due to the uncleanness of PCB surface might cause unexpected operations. Application values in these conditions should be selected carefully. If the leakage is assumed between the VOUT terminal and the GND terminal, the pull-up resistor should be less than 1/10 of the assumed leakage resistance. 11. External parameters The recommended parameter range for RL is 10k to 1M. There are many factors (board layout, etc) that can affect characteristics. Please verify and confirm using practical applications. 12. Power on reset operation Please note that the power on reset output varies with the VDD rise up time. Please verify the actual operation. 13. Precautions for board inspection Connecting low-impedance capacitors to run inspections with the board may produce stress on the IC. Therefore, be certain to use proper discharge procedure before each process of the test operation. To prevent electrostatic accumulation and discharge in the assembly process, thoroughly ground yourself and any equipment that could sustain ESD damage, and continue observing ESD-prevention procedures in all handing, transfer and storage operations. Before attempting to connect components to the test setup, make certain that the power supply is OFF. Likewise, be sure the power supply is OFF before removing any component connected to the test setup. 14. When the power supply, is turned on because of in certain cases, momentary Rash-current flow into the IC at the logic unsettled, the couple capacitance, GND pattern of width and leading line must be considered. Status of this document The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. TSZ2211115001 13/13 TSZ02201-0R7R0G300030-1-2 08.JUL.2012.Rev.006 Datasheet Notice General Precaution 1) Before you use our Products, you are requested to carefully read this document and fully understand its contents. ROHM shall not be in any way responsible or liable for failure, malfunction or accident arising from the use of any ROHM's Products against warning, caution or note contained in this document. 2) All information contained in this document is current as of the issuing date and subject to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the latest information with a ROHM sales representative. Precaution on using ROHM Products 1) Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment, transport equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. 2) ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3) Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4) The Products are not subject to radiation-proof design. 5) Please verify and confirm characteristics of the final or mounted products in using the Products. 6) In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse) is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7) De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8) Confirm that operation temperature is within the specified range described in the product specification. 9) ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Notice - Rev.003 (c) 2012 ROHM Co., Ltd. All rights reserved. Datasheet Precaution for Mounting / Circuit board design 1) When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2) In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Precautions Regarding Application Examples and External Circuits 1) If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2) You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1) Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2) Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3) Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4) Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1) All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2) No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Notice - Rev.003 (c) 2012 ROHM Co., Ltd. All rights reserved. Datasheet Other Precaution 1) The information contained in this document is provided on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate and/or error-free. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or concerning such information. 2) This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 3) The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 4) In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 5) The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - Rev.003 (c) 2012 ROHM Co., Ltd. All rights reserved.