SOT23-6W 120mA 2ch LDO REGULATORS R5322N SERIES APPLICATION MANUAL NO. EA-077-0012 SOT23-6W 120mA 2ch LDO REGULATORS R5322N SERIES OUTLINE The R5322N Series are voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip enable function and prolong the battery life of each system. The line transient response and load transient response of the R5322N Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SOT-236W package, and include 2ch LDO regulators each, high density mounting of the ICs on boards is possible. FEATURES * Ultra-Low Supply Current ................................................. TYP. 75A (VR1,VR2) * Standby Mode ..................................................................... TYP. 0.1A (VR1,VR2) * Low Dropout Voltage ......................................................... TYP. 0.15V (IOUT=100mA Output Voltage=3.0V Type) * High Ripple Rejection ........................................................ TYP. 75dB (f=1kHz) * Low Temperature-Drift Coefficient of Output Voltage..... TYP. 100ppm/C * Excellent Line Regulation.................................................. TYP. 0.05%/V * High Output Voltage Accuracy .......................................... 2.0% * Small Package .................................................................... SOT-23-6W * Output Voltage.................................................................... Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible * Built-in chip enable circuit (A/B: active high) * Built-in fold-back protection circuit................................... TYP. 40mA (Current at short mode) APPLICATIONS * Power source for cellular phones such as GSM, CDMA and various kinds of PCS. * Power source for electrical appliances such as cameras, VCRs and camcorders. * Power source for battery-powered equipment. 1 R5322N BLOCK DIAGRAM * R5322Nxxx xxxA xxx CE1 1 VOUT1 5 GND 4 VOUT2 R1-1 - Error Amp. 6 + Vref R2-1 Current Limit VDD 2 R1-2 - Error Amp. + Vref R2-2 Current Limit CE2 3 * R5322Nxxx xxxB xxx CE1 1 Error Amp. 6 VOUT1 5 GND 4 VOUT2 R1-1 + Vref Current Limit VDD R2-1 2 R1-2 Error Amp. + Vref Current Limit CE2 2 3 R2-2 R5322N SELECTION GUIDE The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R5322Nxxxx-xx Part Number a b c Code a Contents Setting combination of 2ch Output Voltage (VOUT) : Serial Number for Voltage Setting, Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible for each channel. Designation of Mask Option : b A version: without auto discharge function at OFF state. B version: with auto discharge function at OFF state. c Designation of Taping Type : Ex. TR (refer to Taping Specifications; TR type is the standard direction.) PIN CONFIGURATION 6 SOT-23-6W 5 4 VOUT1 GND VOUT2 (mark side) CE1 1 VDD CE2 2 3 PIN DESCRIPTION Pin No. Symbol Description 1 CE1 Chip Enable Pin 1 2 VDD Input Pin 3 CE2 Chip Enable Pin 2 4 VOUT2 Output Pin 2 5 GND Ground Pin 6 VOUT1 Output Pin 1 3 R5322N ABSOLUTE MAXIMUM RATINGS Symbol 4 Item Rating Unit 6.5 V VIN Input Voltage VCE Input Voltage (CE Pin) -0.3 ~ VIN+0.3 V VOUT Output Voltage -0.3 ~ VIN+0.3 V IOUT1 Output Current 1 130 mA IOUT2 Output Current 2 130 mA PD Power Dissipation 250 mW Topt Operating Temperature Range -40 ~ 85 C Tstg Storage Temperature Range -55 ~ 125 C R5322N ELECTRICAL CHARACTERISTICS Topt=25C * R5322Nxxx xxxA/B xxx Symbol Item VOUT Output Voltage IOUT Output Current VOUT/IOUT Load Regulation Conditions MIN. TYP. MAX. VIN = Set VOUT+1V VOUT VOUT 1mA IOUT 30mA x0.98 x1.02 VIN - VOUT = 1.0V 120 VIN = Set VOUT+1V V mA 12 1mA IOUT 120mA Unit 40 mV Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLT- VDIF Dropout Voltage ISS Supply Current VIN = Set VOUT+1V 75 150 A Supply Current (Standby) VIN = VCE = Set VOUT+1V 0.1 1.0 A 0.05 0.20 %/V Istandby AGE Set VOUT+0.5V VIN 6V VOUT/VIN Line Regulation IOUT = 30mA (In case that VOUT 1.6V, 2.2V VIN 6V) f = 1kHz, Ripple 0.5Vp-p RR Ripple Rejection 75 VIN = Set VOUT+1V, dB IOUT = 30mA VIN Input Voltage 2.2 Output Voltage IOUT = 30mA Temperature Coefficient -40C Topt 85C Ilim Short Current Limit VOUT = 0V RPD CE Pull-down Resistance 1.5 VCEH CE Input Voltage "H" VCEL CE Input Voltage "L" VOUT/T en RLOW Output Noise Low Output Nch Tr. ON Resistance (of B version) 6.0 ppm 100 /C 40 4 V mA 16 M 1.5 VIN V 0.0 0.3 V BW=10Hz to 100kHz 30 Vrms VCE=0V 70 5 R5322N * ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Topt = 25C Dropout Voltage Output Voltage VDIF (V) VOUT (V) Condition TYP. MAX. 1.5 VOUT 1.6 0.36 0.70 1.7 VOUT 1.8 0.30 0.50 0.28 0.45 2.1 VOUT 2.7 0.24 0.40 2.8 VOUT 4.0 0.18 0.30 1.9 VOUT 2.0 IOUT = 120mA TEST CIRCUITS IOUT2 VOUT2 C3 V 4 VOUT2 CE2 3 4 VOUT2 R5322N SERIES 5 GND C3 CE2 3 R5322N SERIES VDD 2 5 GND VDD 2 ISS C1 IOUT1 VOUT1 V C2 6 VOUT1 A C1 CE1 1 6 VOUT1 C2 CE1 1 C1=Tantal 1.0F C2=C3=Tantal 2.2F C1=1.0F C2=C3=2.2F Fig.1 Standard test Circuit 4 VOUT2 IOUT2 C3 Fig.2 Supply Current Test Circuit 4 VOUT2 CE2 3 C3 R5322N SERIES 5 GND VDD 2 IOUT2a IOUT2b CE2 3 R5322N SERIES 5 GND VDD 2 C2 Pulse Generator IOUT1 C2 6 VOUT1 CE1 1 PG C2=C3=2.2F Fig.3 Ripple Rejection, Line Transient Response Test Circuit 6 IOUT1b IOUT1a C2 6 VOUT1 CE1 1 C1=1.0F C2=C3=2.2F Fig.4 Load Transient Response Test Circuit R5322N TYPICAL APPLICATION OUT2 4 VOUT2 C3 CE2 3 R5322Nxxxx SERIES 5 GND IN VDD 2 C1 OUT1 C2 6 VOUT1 CE1 1 (External Components) Output Capacitor; Tantalum Type 7 R5322N TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current 1.5V (VR1) 1.5V (VR2) 1.4 1.2 1.6 VIN=2.0V VIN=1.8V 1.0 VIN=3.5V 0.8 VIN=2.5V 0.6 0.4 0.2 0.0 0.00 0.20 0.10 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.6 1.2 VIN=1.8V VIN=3.5V 1.0 0.6 0.4 0.2 0.05 2.8V (VR1) Output Voltage VOUT(V) Output Voltage VOUT(V) 2.5 VIN=3.1V VIN=3.3V 2.0 VIN=4.8V 1.5 1.0 VIN=3.5V 0.5 0.05 0.10 0.15 0.20 0.25 0.25 0.30 0.25 0.30 VIN=3.1V VIN=3.3V 2.5 2.0 VIN=4.8V 1.5 VIN=3.5V 1.0 0.5 0.0 0.00 0.30 0.05 0.10 0.15 0.20 Output Current IOUT(A) 4.0V (VR1) 4.0V (VR2) 4.5 4.5 4.0 Output Voltage VOUT(V) Output Voltage VOUT(V) 0.20 3.0 Output Current IOUT(A) VIN=4.3V VIN=4.5V VIN=6.0V 3.5 3.0 2.5 2.0 VIN=5.0V 1.5 1.0 0.5 0.05 0.10 0.15 0.20 Output Current IOUT(A) 8 0.15 2.8V (VR2) 3.0 0.0 0.00 0.10 Output Current IOUT(A) Output Current IOUT(A) 0.0 0.00 VIN=2.5V 0.8 0.0 0.00 0.30 VIN=2.0V 1.4 0.30 4.0 VIN=4.3V VIN=4.5V VIN=6.0V 3.5 3.0 2.5 2.0 VIN=5.0V 1.5 1.0 0.5 0.0 0.00 0.05 0.10 0.15 0.20 Output Current IOUT(A) 0.25 0.30 R5322N Output Voltage vs. Input Voltage 1.5V (VR1) 1.5V (VR2) 1.6 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.6 1.5 1.4 1.3 IOUT=1mA 1.2 IOUT=30mA IOUT=50mA 1.1 1.0 1 2 3 4 5 1.5 1.4 1.3 IOUT=1mA 1.2 IOUT=50mA 1.1 1.0 6 IOUT=30mA 1 2 Input Voltage VIN(V) 2.8 2.8 Output Voltage VOUT(V) Output Voltage VOUT(V) 2.9 2.7 2.6 2.5 2.4 IOUT=1mA 2.3 IOUT=30mA 2.2 IOUT=50mA 2.1 1 2 3 5 4 2.4 IOUT=30mA 2.2 IOUT=50mA 2.1 2.0 6 IOUT=1mA 2.3 1 2 5 4 6 4.0V (VR2) 4.0 4.0 Output Voltage VOUT(V) 4.2 3.8 3.6 IOUT=1mA 3.4 IOUT=30mA 3.2 IOUT=50mA 3 3 Input Voltage VIN(V) 4.0V (VR1) 2 6 2.6 2.5 4.2 1 5 2.7 Input Voltage VIN(V) 3.0 4 2.8V (VR2) 2.9 2.0 3 Input Voltage VIN(V) 2.8V (VR1) Output Voltage VOUT(V) 2) 4 Input Voltage VIN(V) 5 6 3.8 3.6 IOUT=1mA 3.4 IOUT=30mA 3.2 3.0 IOUT=50mA 1 2 3 4 5 6 Input Voltage VIN(V) 9 R5322N 3) Dropout Voltage vs. Temperature 1.5V (VR1) 1.5V (VR2) 1.00 Topt=85C 25C -40C 0.80 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 1.00 0.60 0.40 0.20 0.00 0 20 40 60 80 100 0.60 0.40 0.20 0.00 120 Topt=85C 25C -40C 0.80 0 Output Current IOUT(mA) 20 2.8V (VR1) 0.30 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) Topt=85C 25C -40C 0.25 0.20 0.15 0.10 0.05 0 20 40 60 80 100 120 100 120 100 120 Topt=85C 25C -40C 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 120 0 20 40 60 80 Output Current IOUT(mA) 4.0V (VR1) 4.0V (VR2) 0.40 0.40 Topt=85C 25C -40C 0.35 0.30 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 100 2.8V (VR2) Output Current IOUT(mA) 0.25 0.20 0.15 0.10 0.05 0 20 40 60 80 Output Current IOUT(mA) 10 80 0.40 0.35 0.00 60 Output Current IOUT(mA) 0.40 0.00 40 100 120 Topt=85C 25C -40C 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 20 40 60 80 Output Current IOUT(mA) R5322N Output Voltage vs. Temperature 1.5V (VR1) 1.53 1.52 1.51 1.50 1.49 1.48 1.47 1.46 -50 -25 0 25 50 75 VIN=2.5V IOUT=30mA 1.54 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.5V (VR2) VIN=2.5V IOUT=30mA 1.54 1.53 1.52 1.51 1.50 1.49 1.48 1.47 1.46 -50 100 -25 Temperature Topt(C) 2.82 2.80 2.78 2.76 -25 0 25 50 75 2.80 2.78 2.76 2.74 -50 100 -25 50 75 100 4.02 4.00 3.98 3.96 3.94 50 Temperature Topt(C) 75 100 VIN=5.0V IOUT=30mA 4.08 Output Voltage VOUT(V) 4.04 25 25 4.0V (VR2) 4.06 0 0 Temperature Topt(C) VIN=5.0V IOUT=30mA -25 100 2.82 4.0V (VR1) 3.92 -50 75 2.84 Temperature Topt(C) 4.08 50 VIN=3.8V IOUT=30mA 2.86 Output Voltage VOUT(V) Output Voltage VOUT(V) 2.84 2.74 -50 25 2.8V (VR2) VIN=3.8V IOUT=30mA 2.86 0 Temperature Topt(C) 2.8V (VR1) Output Voltage VOUT(V) 4) 4.06 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 75 100 Temperature Topt(C) 11 R5322N 5) Supply Current vs. Input Voltage 1.5V 2.8V 100 Supply Current ISS(A) Supply Current ISS(A) 100 80 60 40 VR1 20 80 60 40 VR1 20 VR2 0 0 1 2 3 4 VR2 5 0 6 0 Input Voltage VIN(V) 1 2 3 4 5 6 Input Voltage VIN(V) 4.0V Supply Current ISS(A) 100 80 60 40 VR1 20 VR2 0 0 1 2 3 4 5 6 Input Voltage VIN(V) 6) Supply Current vs. Temperature 1.5V (VR1) 1.5V (VR2) VIN=2.5V 80 60 40 20 0 -50 0 50 Temperature Topt(C) 12 100 VIN=2.5V 100 Supply Current ISS(A) Supply Current ISS(A) 100 80 60 40 20 0 -50 0 50 Temperature Topt(C) 100 R5322N 2.8V (VR1) 2.8V (VR2) VIN=3.8V 80 60 40 20 0 -50 -25 0 25 50 75 VIN=3.8V 100 Supply Current ISS(A) Supply Current ISS(A) 100 80 60 40 20 0 -50 100 -25 4V (VR1) 60 40 20 0 25 75 100 50 75 VIN=5.0V 80 60 40 20 0 -50 100 Temperature Topt(C) -25 0 25 50 75 100 Temperature Topt(C) Dropout Voltage vs. Set Output Voltage VR1 0.70 VR2 0.70 IOUT=10mA 30mA 50mA 120mA 0.60 0.50 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 7) 50 100 Supply Current ISS(A) Supply Current ISS(A) 80 -25 25 4V (VR2) VIN=5.0V 100 0 -50 0 Temperature Topt(C) Temperature Topt(C) 0.40 0.30 0.20 0.10 0.00 1.0 2.0 3.0 Output Voltage VOUT(V) 4.0 IOUT=10mA 30mA 50mA 120mA 0.60 0.50 0.40 0.30 0.20 0.10 0.00 1.0 2.0 3.0 4.0 Output Voltage VOUT(V) 13 R5322N 8) Ripple Rejection vs. Frequency 1.5V (VR1) 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 0 0.1 1 10 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 90 1.5V (VR2) VIN=2.5V+0.5Vp-p COUT=tantal 1.0F Topt=25C 80 70 60 50 40 30 10 Frequency f(kHz) 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 10 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 70 60 1 50 40 30 10 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 10 100 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 10 100 2.8V (VR2) Frequency f(kHz) 14 1 Frequency f(kHz) VIN=3.8V+0.5Vp-p COUT=tantal 1.0F Topt=25C 1 IOUT=1mA IOUT=30mA IOUT=50mA 20 0 0.1 100 VIN=2.5V+0.5Vp-p COUT=tantal 2.2F Topt=25C 70 60 2.8V (VR1) 0 0.1 100 80 Frequency f(kHz) 90 10 1.5V (VR2) VIN=2.5V+0.5Vp-p COUT=tantal 2.2F Topt=25C 80 0 0.1 1 Frequency f(kHz) 1.5V (VR1) 90 IOUT=1mA IOUT=30mA IOUT=50mA 20 0 0.1 100 VIN=2.5V+0.5Vp-p COUT=tantal 1.0F Topt=25C VIN=3.8V+0.5Vp-p COUT=tantal 1.0F Topt=25C 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 0 0.1 1 10 Frequency f(kHz) 100 R5322N 2.8V (VR1) 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 0 0.1 1 10 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 90 2.8V (VR2) VIN=3.8V+0.5Vp-p COUT=tantal 2.2F Topt=25C 80 70 60 50 40 30 10 Frequency f(kHz) 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 10 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 70 60 1 50 40 30 10 10 100 4.0V (VR2) 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 10 Frequency f(kHz) 100 90 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 1 Frequency f(kHz) VIN=5.0V+0.5Vp-p COUT=tantal 2.2F Topt=25C 1 IOUT=1mA IOUT=30mA IOUT=50mA 20 0 0.1 100 VIN=5.0V+0.5Vp-p COUT=tantal 1.0F Topt=25C 70 60 4.0V (VR1) 0 0.1 100 80 Frequency f(kHz) 90 10 4.0V (VR2) VIN=5.0V+0.5Vp-p COUT=tantal 1.0F Topt=25C 80 0 0.1 1 Frequency f(kHz) 4.0V (VR1) 90 IOUT=1mA IOUT=30mA IOUT=50mA 20 0 0.1 100 VIN=3.8V+0.5Vp-p COUT=tantal 2.2F Topt=25C VIN=5.0V+0.5Vp-p COUT=tantal 2.2F Topt=25C 80 70 60 50 40 30 IOUT=1mA IOUT=30mA IOUT=50mA 20 10 0 0.1 1 10 100 Frequency f(kHz) 15 R5322N 9) Ripple Rejection vs. Input Voltage (DC bias) 2.8V (VR1) 60 40 f=1kHz f=10kHz f=100kHz 20 3.0 3.1 40 f=1kHz f=10kHz f=100kHz 20 3.0 3.1 3.2 Input Voltage VIN(V) 2.8V (VR1) 2.8V (VR2) COUT=tantal 2.2F IOUT=30mA 60 40 f=1kHz f=10kHz f=100kHz 20 3.0 3.1 3.2 100 80 60 40 f=1kHz f=10kHz f=100kHz 20 0 2.9 3.3 3.0 3.1 3.2 Input Voltage VIN(V) 2.8V (VR1) 2.8V (VR2) COUT=tantal 2.2F IOUT=50mA 80 60 40 f=1kHz f=10kHz f=100kHz 20 3.0 3.1 3.2 Input Voltage VIN(V) 3.3 3.3 COUT=tantal 2.2F IOUT=30mA Input Voltage VIN(V) 100 0 2.9 60 0 2.9 3.3 80 0 2.9 80 Input Voltage VIN(V) 100 Ripple Rejection RR(dB) 3.2 Ripple Rejection RR(dB) 0 2.9 16 Ripple Rejection RR(dB) 80 COUT=tantal 2.2F IOUT=1mA 100 3.3 COUT=tantal 2.2F IOUT=50mA 100 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 100 Ripple Rejection RR(dB) 2.8V (VR2) COUT=tantal 2.2F IOUT=1mA 80 60 40 f=1kHz f=10kHz f=100kHz 20 0 2.9 3.0 3.1 3.2 Input Voltage VIN(V) 3.3 R5322N 10) Input Transient Response R5322N001x x (2.8V, VR1) Output Voltage VOUT(V) 2.84 2.83 6.0 5.0 VIN 2.82 4.0 2.81 3.0 2.80 2.0 2.79 2.78 1.0 VOUT 0 10 Input Voltage VIN(V) IOUT=30mA COUT=tantal 1.0F tr/tf=5s Topt=25C 20 30 40 50 60 70 80 90 0.0 100 Time t(s) R5322N001x x (2.8V, VR1) Output Voltage VOUT(V) 2.84 2.83 6.0 5.0 VIN 2.82 4.0 2.81 3.0 2.80 2.0 2.79 2.78 1.0 VOUT 0 10 Input Voltage VIN(V) IOUT=30mA COUT=tantal 2.2F tr/tf=5s Topt=25C 20 30 40 50 60 70 80 90 0.0 100 Time t(s) R5322N001x x (2.8V, VR1) Output Voltage VOUT(V) 2.84 2.83 6.0 5.0 VIN 4.0 2.82 2.81 3.0 VOUT 2.80 2.0 2.79 1.0 2.78 0 10 20 30 40 50 60 70 80 90 Input Voltage VIN(V) IOUT=30mA COUT=tantal 6.8F tr/tf=5s Topt=25C 0.0 100 Time t(s) 17 R5322N R5322N001x x (2.8V, VR2) Output Voltage VOUT(V) 2.84 6.0 5.0 2.83 VIN 4.0 2.82 3.0 2.81 VOUT 2.80 2.0 2.79 1.0 2.78 0 10 20 30 40 50 60 70 80 90 Input Voltage VIN(V) IOUT=30mA COUT=tantal 1.0F tr/tf=5s Topt=25C 0.0 100 Time t(s) R5322N001x x (2.8V, VR2) Output Voltage VOUT(V) 2.84 6.0 5.0 2.83 VIN 4.0 2.82 3.0 2.81 VOUT 2.80 2.0 2.79 1.0 2.78 0 10 20 30 40 50 60 70 80 90 Input Voltage VIN(V) IOUT=30mA COUT=tantal 2.2F tr/tf=5s Topt=25C 0.0 100 Time t(s) R5322N001x x (2.8V, VR2) Output Voltage VOUT(V) 2.84 2.83 5.0 VIN 2.82 4.0 2.81 3.0 VOUT 2.80 2.0 2.79 1.0 2.78 0 10 20 30 40 50 Time t(s) 18 6.0 60 70 80 90 0.0 100 Input Voltage VIN(V) IOUT=30mA COUT=tantal 6.8F tr/tf=5s Topt=25C R5322N 11) Load Transient Response R5322N001x x (VR1=2.8V) 150 3.00 2.95 2.90 100 50 0 IOUT1 2.85 VOUT1 2.80 2.75 2.70 2.80 2.75 VOUT2 -2 0 IOUT2=30mA 2 4 6 8 10 12 14 16 Output Current IOUT1(mA) Output Voltage VOUT(V) IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 1.0F tr/tf=5s Topt=25C 18 Time t(s) R5322N001x x (VR1=2.8V) 150 3.00 2.95 2.90 100 50 0 IOUT1 2.85 VOUT1 2.80 2.75 2.70 2.80 2.75 VOUT2 -2 0 IOUT2=30mA 2 4 6 8 10 12 14 16 Output Current IOUT1(mA) Output Voltage VOUT(V) IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 2.2F tr/tf=5s Topt=25C 18 Time t(s) IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 6.8F tr/tf=5s Topt=25C 3.00 2.95 2.90 100 50 0 IOUT1 2.85 VOUT1 2.80 2.75 2.70 2.80 2.75 VOUT2 -2 0 IOUT2=30mA 2 4 6 8 10 12 14 150 16 Output Current IOUT1(mA) Output Voltage VOUT(V) R5322N001x x (VR1=2.8V) 18 Time t(s) 19 R5322N IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 1.0F tr/tf=5s Topt=25C 3.00 2.95 2.90 100 50 0 IOUT2 2.85 VOUT1 2.80 2.75 2.70 150 IOUT1=30mA VOUT2 2.80 2.75 -2 0 2 4 6 8 10 12 14 16 Output Current IOUT2(mA) Output Voltage VOUT(V) R5322N001x x (VR2=2.8V) 18 Time t(s) IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 2.2F tr/tf=5s Topt=25C 3.00 2.95 2.90 100 50 0 IOUT2 2.85 VOUT1 2.80 2.75 2.70 150 IOUT1=30mA VOUT2 2.80 2.75 -2 0 2 4 6 8 10 12 14 16 Output Current IOUT2(mA) Output Voltage VOUT(V) R5322N00x x (VR2=2.8V) 18 Time t(s) R5322N00x x (VR2=2.8V) 150 3.00 2.95 2.90 2.85 VOUT1 2.80 2.75 2.70 IOUT1=30mA VOUT2 2.80 2.75 -2 0 2 4 6 8 Time t(s) 20 100 50 0 IOUT2 10 12 14 16 18 Output Current IOUT2(mA) Output Voltage VOUT(V) IOUT=50mA 100mA VIN=3.8V CIN=tantal 1.0F COUT=tantal 6.8F tr/tf=5s Topt=25C R5322N TECHNICAL NOTES When using these ICs, consider the following points: In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be sure to use a 2.2F or more capacitance COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the range described as follows: The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions when the white noise level is under 40V (Avg.) are marked as the hatched area in the graph. (Note: When a ceramic capacitor is connected to the Output Pin as Output capacitor for phase compensation, the operation might be unstable unless as much as 1 resistor is connected between the capacitor and GND instead of ESR. Test these ICs with as same external components as ones to be used on the PCB.) <Test conditions> (1) VIN=3.8V (2) Frequency band: 10Hz to 2MHz (3) Temperature: 25C R5322N001x x (VR1=2.8V) R5322N001x x (VR1=2.8V) CIN=Ceramic 1.0F COUT=Ceramic 2.2F 100 100 10 ERS1() ERS1() 10 1 0.1 0.01 CIN=Ceramic 2.2F COUT=Ceramic 2.2F 1 0.1 0 20 40 60 80 Output Current IOUT1(mA) 100 120 0.01 0 20 40 60 80 100 120 Output Current IOUT1(mA) 21 R5322N R5322N001x x (VR2=2.8V) R5322N001x x (VR2=2.8V) CIN=Ceramic 1.0F COUT=Ceramic 2.2F 100 100 10 ERS2() ERS2() 10 1 1 0.1 0.1 0.01 CIN=Ceramic 2.2F COUT=Ceramic 2.2F 0 20 40 60 80 Output Current IOUT2(mA) 100 120 0.01 0 20 40 60 80 100 120 Output Current IOUT2(mA) * Make VDD and GND line sufficient. When the impedance of these is high, the noise might be picked up or not work correctly. * Connect the capacitor with a capacitance of 1F or more between VDD and GND as close as possible. * Set external components, especially Output Capacitor, as close as possible to the ICs and make wiring shortest. 22