LM2931-N
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LM2931-N Series Low Dropout Regulators
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1FEATURES DESCRIPTION
The LM2931-N positive voltage regulator features a
2• Very Low Quiescent Current very low quiescent current of 1mA or less when
• Output Current in Excess of 100 mA supplying 10mA loads. This unique characteristic and
• Input-output Differential Less than 0.6V the extremely low input-output differential required for
proper regulation (0.2V for output currents of 10mA)
• Reverse Battery Protection make the LM2931-N the ideal regulator for standby
• 60V Load Dump Protection power systems. Applications include memory standby
•−50V Reverse Transient Protection circuits, CMOS and other low power processor power
supplies as well as systems demanding as much as
• Short Circuit Protection 100mA of output current.
• Internal Thermal Overload Protection Designed originally for automotive applications, the
• Mirror-image Insertion Protection LM2931-N and all regulated circuitry are protected
• Available in TO-220, TO-92, TO-263, or SOIC-8 from reverse battery installations or 2 battery jumps.
Packages During line transients, such as a load dump (60V)
• Available as Adjustable with TTL Compatible when the input voltage to the regulator can
Switch momentarily exceed the specified maximum
operating voltage, the regulator will automatically shut
down to protect both internal circuits and the load.
The LM2931-N cannot be harmed by temporary
mirror-image insertion. Familiar regulator features
such as short circuit and thermal overload protection
are also provided.
The LM2931-N family includes a fixed 5V output
(±3.8% tolerance for A grade) or an adjustable output
with ON/OFF pin. Both versions are available in a
TO-220 power package, DDPAK/TO-263 surface
mount package, and an 8-lead SOIC package. The
fixed output version is also available in the TO-92
plastic package.
Connection Diagrams
FIXED VOLTAGE OUTPUT
Figure 1. TO-220 3-Lead Power Package Figure 2. DDPAK/TO-263 Surface-Mount Package
Front View Top View
Figure 3. Side View
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LM2931-N
SNOSBE5G –MARCH 2000–REVISED APRIL 2013
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*NC = Not internally connected. Must be electrically isolated from the rest of the circuit for the DSBGA package.
Figure 4. 8-Pin SOIC
Top View
Figure 5. TO-92 Plastic Package
Bottom View
Figure 6. 6-Bump DSBGA Figure 7. DSBGA Laser Mark
Top View
(Bump Side Down)
ADJUSTABLE OUTPUT VOLTAGE
Figure 8. TO-220 5-Lead Power Package
Front View
Figure 9. DDPAK/TO-263 Figure 10. Side View
5-Lead Surface-Mount Package
Top View
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Figure 11. 8-Pin SOIC
Top View
Typical Applications
*Required if regulator is located far from power supply filter.
**C2 must be at least 100 μF to maintain stability. May be increased without bound to maintain regulation during
transients. Locate as close as possible to the regulator. This capacitor must be rated over the same operating
temperature range as the regulator. The equivalent series resistance (ESR) of this capacitor is critical; see curve.
Figure 12. LM2931-N Fixed Output
Note: Using 27k for R1 will automatically compensate for errors in VOUT due to the input bias current of the ADJ pin
(approximately 1 μA).
Figure 13. LM2931-N Adjustable Output
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS(1)(2)
Input Voltage
Operating Range 26V
Overvoltage Protection
LM2931A, LM2931C (Adjustable) 60V
LM2931-N 50V
Internal Power Dissipation
(3) (4) Internally Limited
Operating Ambient Temperature
Range −40°C to +85°C
Maximum Junction Temperature 125°C
Storage Temperature Range −65°C to +150°C
Lead Temp. (Soldering, 10 seconds) 230°C
ESD Tolerance (5) 2000V
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when
operating the device beyond its rated operating conditions.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) See circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
(4) The maximum power dissipation is a function of maximum junction temperature TJmax, total thermal resistance θJA, and ambient
temperature TA. The maximum allowable power dissipation at any ambient temperature is PD= (TJmax −TA)/θJA. If this dissipation is
exceeded, the die temperature will rise above 150°C and the LM2931-N will go into thermal shutdown. For the LM2931-N in the TO-92
package, θJA is 195°C/W; in the SOIC-8 package, θJA is 160°C/W, and in the TO-220 package, θJA is 50°C/W; in the DDPAK/TO-263
package, θJA is 73°C/W; and in the 6-Bump DSBGA package θJA is 290°C/W. If the TO-220 package is used with a heat sink, θJA is the
sum of the package thermal resistance junction-to-case of 3°C/W and the thermal resistance added by the heat sink and thermal
interface.If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally
connected to the package: Using 0.5 square inches of copper area, θJA is 50°C/W; with 1 square inch of copper area, θJA is 37°C/W;
and with 1.6 or more square inches of copper area, θJA is 32°C/W.
(5) Human body model, 100 pF discharged through 1.5 kΩ.
ELECTRICAL CHARACTERISTICS FOR FIXED 3.3V VERSION
VIN = 14V, IO= 10mA, TJ= 25°C, C2= 100μF (unless otherwise specified) (1)
LM2931-N-3.3
Parameter Conditions Units
Limit
Typ (2)
Output Voltage 3.3 3.465 VMAX
3.135 VMIN
4V ≤VIN ≤26V, IO= 100 mA 3.630 VMAX
−40°C ≤TJ≤125°C 2.970 VMIN
Line Regulation 4V ≤VIN ≤26V 4 33 mVMAX
Load Regulation 5mA ≤IO≤100mA 10 50 mVMAX
Output Impedance 100mADC and 10mArms, 200 mΩ
100Hz - 10kHz
Quiescent Current IO≤10mA, 4V ≤VIN ≤26V 0.4 1.0 mAMAX
−40°C ≤TJ≤125°C
IO= 100mA, VIN = 14V, TJ= 25°C 15 mA
Output Noise Voltage 10Hz -100kHz, COUT = 100μF 330 μVrms
Long Term Stability 13 mV/1000 hr
Ripple Rejection fO= 120Hz 80 dB
(1) See circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
(2) All limits are specified for TJ= 25°C (standard type face) or over the full operating junction temperature range of −40°C to +125°C (bold
type face).
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ELECTRICAL CHARACTERISTICS FOR FIXED 3.3V VERSION (continued)
VIN = 14V, IO= 10mA, TJ= 25°C, C2= 100μF (unless otherwise specified) (1)
LM2931-N-3.3
Parameter Conditions Units
Limit
Typ (2)
Dropout Voltage IO= 10mA 0.05 0.2 VMAX
IO= 100mA 0.30 0.6
Maximum Operational Input Voltage 33 26 VMIN
Maximum Line Transient RL= 500Ω, VO≤5.5V, 70 50 VMIN
T = 1ms, τ ≤ 100ms
Reverse Polarity Input Voltage, DC VO≥ −0.3V, RL= 500Ω −30 −15 VMIN
Reverse Polarity Input Voltage, T = 1ms, τ ≤ 100ms, RL= 500Ω −80 −50 VMIN
Transient
ELECTRICAL CHARACTERISTICS FOR FIXED 5V VERSION
VIN = 14V, IO= 10mA, TJ= 25°C, C2 = 100 μF (unless otherwise specified) (1)
LM2931A-5.0 LM2931-N-5.0
Parameter Conditions Units
Limit Limit
Typ Typ
(2) (2)
Output Voltage 5 5.19 5 5.25 VMAX
4.81 4.75 VMIN
6.0V ≤VIN ≤26V, IO= 100mA 5.25 5.5 VMAX
−40°C ≤TJ≤125°C 4.75 4.5 VMIN
Line Regulation 9V ≤VIN ≤16V 2 10 2 10 mVMAX
6V ≤VIN ≤26V 4 30 4 30
Load Regulation 5 mA ≤IO≤100mA 14 50 14 50 mVMAX
Output Impedance 100mADC and 10mArms, 200 200 mΩ
100Hz -10kHz
Quiescent Current IO≤10mA, 6V ≤VIN ≤26V 0.4 1.0 0.4 1.0 mAMAX
−40°C ≤TJ≤125°C
IO= 100mA, VIN = 14V, TJ= 25°C 15 30 15 mAMAX
Output Noise Voltage 10Hz -100kHz, COUT = 100μF 500 500 μVrms
Long Term Stability 20 20 mV/1000
hr
Ripple Rejection fO= 120 Hz 80 55 80 dBMIN
Dropout Voltage IO= 10mA 0.05 0.2 0.05 0.2 VMAX
IO= 100mA 0.3 0.6 0.3 0.6
Maximum Operational Input 33 26 33 26 VMIN
Voltage
Maximum Line Transient RL= 500Ω, VO≤5.5V, 70 60 70 50 VMIN
T = 1ms, τ ≤ 100ms
Reverse Polarity Input Voltage, VO≥ −0.3V, RL= 500Ω −30 −15 −30 −15 VMIN
DC
Reverse Polarity Input Voltage, T = 1ms, τ ≤ 100ms, RL= 500Ω −80 −50 −80 −50 VMIN
Transient
(1) See circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
(2) All limits are specified for TJ= 25°C (standard type face) or over the full operating junction temperature range of −40°C to +125°C (bold
type face).
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ELECTRICAL CHARACTERISTICS FOR ADJUSTABLE VERSION
VIN = 14V, VOUT = 3V, IO= 10 mA, TJ= 25°C, R1 = 27k, C2 = 100 μF (unless otherwise specified) (1)
Parameter Conditions Typ Limit Units Limit
Reference Voltage 1.20 1.26 VMAX
1.14 VMIN
IO≤100 mA, −40°C ≤Tj≤125°C, R1 = 27k 1.32 VMAX
Measured from VOUT to Adjust Pin 1.08 VMIN
Output Voltage Range 24 VMAX
3 VMIN
Line Regulation VOUT + 0.6V ≤VIN ≤26V 0.2 1.5 mV/VMAX
Load Regulation 5 mA ≤IO≤100 mA 0.3 1 %MAX
Output Impedance 100 mADC and 10 mArms, 100 Hz–10 kHz 40 mΩ/V
Quiescent Current IO= 10 mA 0.4 1 mAMAX
IO= 100 mA 15 mA
During Shutdown RL= 500Ω0.8 1 mAMAX
Output Noise Voltage 10 Hz–100 kHz 100 μVrms/V
Long Term Stability 0.4 %/1000 hr
Ripple Rejection fO= 120 Hz 0.02 %/V
Dropout Voltage IO≤10 mA 0.05 0.2 VMAX
IO= 100 mA 0.3 0.6 VMAX
Maximum Operational Input
Voltage 33 26 VMIN
Maximum Line Transient IO= 10 mA, Reference Voltage ≤1.5V 70 60 VMIN
T = 1 ms, τ ≤ 100 ms
Reverse Polarity Input VO≥ −0.3V, RL= 500Ω
Voltage, DC −30 −15 VMIN
Reverse Polarity Input T = 1 ms, τ ≤ 100 ms, RL= 500Ω
Voltage, Transient −80 −50 VMIN
On/Off Threshold Voltage VO=3V
On 2.0 1.2 VMAX
Off 2.2 3.25 VMIN
On/Off Threshold Current 20 50 μAMAX
(1) See circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
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TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage Dropout Voltage
Figure 14. Figure 15.
Low Voltage Behavior Output at Voltage Extremes
Figure 16. Figure 17.
Line Transient Response Load Transient Response
Figure 18. Figure 19.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Peak Output Current Quiescent Current
Figure 20. Figure 21.
Quiescent Current Quiescent Current
Figure 22. Figure 23.
Ripple Rejection Ripple Rejection
Figure 24. Figure 25.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Operation During Load
Output Impedance Dump
Figure 26. Figure 27.
Maximum Power Dissipation
Reference Voltage (SOIC-8)
Figure 28. Figure 29.
Maximum Power Dissipation Maximum Power Dissipation
(TO-220) (TO-92)
Figure 30. Figure 31.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Maximum Power Dissipation
(TO-263) (1) On/Off Threshold
Figure 32. Figure 33.
Output Capacitor ESR
Figure 34.
(1) The maximum power dissipation is a function of maximum junction temperature TJmax, total thermal resistance θJA, and ambient
temperature TA. The maximum allowable power dissipation at any ambient temperature is PD= (TJmax −TA)/θJA. If this dissipation is
exceeded, the die temperature will rise above 150°C and the LM2931-N will go into thermal shutdown. For the LM2931-N in the TO-92
package, θJA is 195°C/W; in the SOIC-8 package, θJA is 160°C/W, and in the TO-220 package, θJA is 50°C/W; in the DDPAK/TO-263
package, θJA is 73°C/W; and in the 6-Bump DSBGA package θJA is 290°C/W. If the TO-220 package is used with a heat sink, θJA is the
sum of the package thermal resistance junction-to-case of 3°C/W and the thermal resistance added by the heat sink and thermal
interface.If the TO-263 package is used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally
connected to the package: Using 0.5 square inches of copper area, θJA is 50°C/W; with 1 square inch of copper area, θJA is 37°C/W;
and with 1.6 or more square inches of copper area, θJA is 32°C/W.
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SCHEMATIC DIAGRAM
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APPLICATION HINTS
One of the distinguishing factors of the LM2931-N series regulators is the requirement of an output capacitor for
device stability. The value required varies greatly depending upon the application circuit and other factors. Thus
some comments on the characteristics of both capacitors and the regulator are in order.
High frequency characteristics of electrolytic capacitors depend greatly on the type and even the manufacturer.
As a result, a value of capacitance that works well with the LM2931-N for one brand or type may not necessary
be sufficient with an electrolytic of different origin. Sometimes actual bench testing, as described later, will be the
only means to determine the proper capacitor type and value. Experience has shown that, as a rule of thumb, the
more expensive and higher quality electrolytics generally allow a smaller value for regulator stability. As an
example, while a high-quality 100 μF aluminum electrolytic covers all general application circuits, similar stability
can be obtained with a tantalum electrolytic of only 47μF. This factor of two can generally be applied to any
special application circuit also.
Another critical characteristic of electrolytics is their performance over temperature. While the LM2931-N is
designed to operate to −40°C, the same is not always true with all electrolytics (hot is generally not a problem).
The electrolyte in many aluminum types will freeze around −30°C, reducing their effective value to zero. Since
the capacitance is needed for regulator stability, the natural result is oscillation (and lots of it) at the regulator
output. For all application circuits where cold operation is necessary, the output capacitor must be rated to
operate at the minimum temperature. By coincidence, worst-case stability for the LM2931-N also occurs at
minimum temperatures. As a result, in applications where the regulator junction temperature will never be less
than 25°C, the output capacitor can be reduced approximately by a factor of two over the value needed for the
entire temperature range. To continue our example with the tantalum electrolytic, a value of only 22μF would
probably thus suffice. For high-quality aluminum, 47μF would be adequate in such an application.
Another regulator characteristic that is noteworthy is that stability decreases with higher output currents. This
sensible fact has important connotations. In many applications, the LM2931-N is operated at only a few milliamps
of output current or less. In such a circuit, the output capacitor can be further reduced in value. As a rough
estimation, a circuit that is required to deliver a maximum of 10mA of output current from the regulator would
need an output capacitor of only half the value compared to the same regulator required to deliver the full output
current of 100mA. If the example of the tantalum capacitor in the circuit rated at 25°C junction temperature and
above were continued to include a maximum of 10mA of output current, then the 22μF output capacitor could be
reduced to only 10μF.
In the case of the LM2931CT adjustable regulator, the minimum value of output capacitance is a function of the
output voltage. As a general rule, the value decreases with higher output voltages, since internal loop gain is
reduced.
At this point, the procedure for bench testing the minimum value of an output capacitor in a special application
circuit should be clear. Since worst-case occurs at minimum operating temperatures and maximum operating
currents, the entire circuit, including the electrolytic, should be cooled to the minimum temperature. The input
voltage to the regulator should be maintained at 0.6V above the output to keep internal power dissipation and die
heating to a minimum. Worst-case occurs just after input power is applied and before the die has had a chance
to heat up. Once the minimum value of capacitance has been found for the brand and type of electrolytic in
question, the value should be doubled for actual use to account for production variations both in the capacitor
and the regulator. (All the values in this section and the remainder of the data sheet were determined in this
fashion.)
LM2931-N DSBGA Light Sensitivity
When the LM2931-N DSBGA package is exposed to bright sunlight, normal office fluorescent light, and other
LED's, it operates within the limits specified in the electrical characteristic table.
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Definition of Terms
Dropout Voltage: The input-output voltage differential at which the circuit ceases to regulate against further
reduction in input voltage. Measured when the output voltage has dropped 100 mV from the nominal value
obtained at 14V input, dropout voltage is dependent upon load current and junction temperature.
Input Voltage: The DC voltage applied to the input terminals with respect to ground.
Input-Output Differential: The voltage difference between the unregulated input voltage and the regulated
output voltage for which the regulator will operate.
Line Regulation: The change in output voltage for a change in the input voltage. The measurement is made
under conditions of low dissipation or by using pulse techniques such that the average chip temperature is
not significantly affected.
Load Regulation: The change in output voltage for a change in load current at constant chip temperature.
Long Term Stability: Output voltage stability under accelerated life-test conditions after 1000 hours with
maximum rated voltage and junction temperature.
Output Noise Voltage: The rms AC voltage at the output, with constant load and no input ripple, measured
over a specified frequency range.
Quiescent Current: That part of the positive input current that does not contribute to the positive load current.
The regulator ground lead current.
Ripple Rejection: The ratio of the peak-to-peak input ripple voltage to the peak-to-peak output ripple voltage at
a specified frequency.
Temperature Stability of VO:The percentage change in output voltage for a thermal variation from room
temperature to either temperature extreme.
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REVISION HISTORY
Changes from Revision F (April 2013) to Revision G Page
• Changed layout of National Data Sheet to TI format .......................................................................................................... 13
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PACKAGE OPTION ADDENDUM
www.ti.com 23-Aug-2017
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM2931AM-5.0 NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 2931A
M-5.0
LM2931AM-5.0/NOPB ACTIVE SOIC D 8 95 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 2931A
M-5.0
LM2931AMX-5.0/NOPB ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 2931A
M-5.0
LM2931AS-5.0 NRND DDPAK/
TO-263 KTT 3 45 TBD Call TI Call TI -40 to 85 LM2931
AS5.0
LM2931AS-5.0/NOPB ACTIVE DDPAK/
TO-263 KTT 3 45 Pb-Free (RoHS
Exempt) CU SN Level-3-245C-168 HR -40 to 85 LM2931
AS5.0
LM2931ASX-5.0 NRND DDPAK/
TO-263 KTT 3 500 TBD Call TI Call TI -40 to 85 LM2931
AS5.0
LM2931ASX-5.0/NOPB ACTIVE DDPAK/
TO-263 KTT 3 500 Pb-Free (RoHS
Exempt) CU SN Level-3-245C-168 HR -40 to 85 LM2931
AS5.0
LM2931AT-5.0 NRND TO-220 NDE 3 45 TBD Call TI Call TI -40 to 85 LM2931
AT5.0
LM2931AT-5.0/NOPB ACTIVE TO-220 NDE 3 45 Green (RoHS
& no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 LM2931
AT5.0
LM2931AZ-5.0/LFT1 ACTIVE TO-92 LP 3 2000 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1AZ-5
LM2931AZ-5.0/LFT3 ACTIVE TO-92 LP 3 2000 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1AZ-5
LM2931AZ-5.0/LFT4 ACTIVE TO-92 LP 3 2000 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1AZ-5
LM2931AZ-5.0/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1AZ-5
LM2931CM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 LM29
31CM
LM2931CM/NOPB ACTIVE SOIC D 8 95 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM29
31CM
LM2931CMX NRND SOIC D 8 2500 TBD Call TI Call TI -40 to 85 LM29
31CM
LM2931CMX/NOPB ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM29
31CM
PACKAGE OPTION ADDENDUM
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Addendum-Page 2
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM2931CS NRND DDPAK/
TO-263 KTT 5 45 TBD Call TI Call TI -40 to 85 LM2931CS
LM2931CS/NOPB ACTIVE DDPAK/
TO-263 KTT 5 45 Pb-Free (RoHS
Exempt) CU SN Level-3-245C-168 HR -40 to 85 LM2931CS
LM2931CT/NOPB ACTIVE TO-220 KC 5 45 Green (RoHS
& no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 LM2931CT
LM2931M-5.0 NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 2931
M-5.0
LM2931M-5.0/NOPB ACTIVE SOIC D 8 95 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 2931
M-5.0
LM2931MX-5.0 NRND SOIC D 8 2500 TBD Call TI Call TI -40 to 85 2931
M-5.0
LM2931MX-5.0/NOPB ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 2931
M-5.0
LM2931S-5.0/NOPB ACTIVE DDPAK/
TO-263 KTT 3 45 Pb-Free (RoHS
Exempt) CU SN Level-3-245C-168 HR -40 to 85 LM2931S
5.0
LM2931T-5.0/NOPB ACTIVE TO-220 NDE 3 45 Green (RoHS
& no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 LM2931T
5.0
LM2931Z-5.0/LFT2 ACTIVE TO-92 LP 3 2000 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1Z-5
LM2931Z-5.0/NOPB ACTIVE TO-92 LP 3 1800 Green (RoHS
& no Sb/Br) CU SN N / A for Pkg Type -40 to 85 LM293
1Z-5
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
PACKAGE OPTION ADDENDUM
www.ti.com 23-Aug-2017
Addendum-Page 3
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
LM2931AMX-5.0/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
LM2931ASX-5.0 DDPAK/
TO-263 KTT 3 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2
LM2931ASX-5.0/NOPB DDPAK/
TO-263 KTT 3 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2
LM2931CMX SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
LM2931CMX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
LM2931MX-5.0 SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
LM2931MX-5.0/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 2-Sep-2015
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LM2931AMX-5.0/NOPB SOIC D 8 2500 367.0 367.0 35.0
LM2931ASX-5.0 DDPAK/TO-263 KTT 3 500 367.0 367.0 45.0
LM2931ASX-5.0/NOPB DDPAK/TO-263 KTT 3 500 367.0 367.0 45.0
LM2931CMX SOIC D 8 2500 367.0 367.0 35.0
LM2931CMX/NOPB SOIC D 8 2500 367.0 367.0 35.0
LM2931MX-5.0 SOIC D 8 2500 367.0 367.0 35.0
LM2931MX-5.0/NOPB SOIC D 8 2500 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 2-Sep-2015
Pack Materials-Page 2
MECHANICAL DATA
NDE0003B
www.ti.com
MECHANICAL DATA
KTT0003B
www.ti.com
BOTTOM SIDE OF PACKAGE
TS3B (Rev F)
www.ti.com
PACKAGE OUTLINE
C
B
9.25
7.67
6.86
5.69
3.05
2.54
14.73
12.29
5X 1.02
0.64
4X 1.7
8.89
6.86
12.88
10.08
(6.275)
4.83
4.06 1.40
1.14
3.05
2.03
0.61
0.30
-3.963.71
6.8
2X (R1)
OPTIONAL
16.51
MAX
A
10.67
9.65
(4.25)
4215009/A 01/2017
TO-220 - 16.51 mm max heightKC0005A
TO-220
NOTES:
1. All controlling linear dimensions are in inches. Dimensions in brackets are in millimeters. Any dimension in brackets or parenthesis are for
reference only. Dimensioning and tolerancing per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. Shape may vary per different assembly sites.
0.25 C A B
PIN 1 ID
(OPTIONAL)
15
OPTIONAL
CHAMFER
SCALE 0.850
NOTE 3
15
AAAA
www.ti.com
EXAMPLE BOARD LAYOUT
0.07 MAX
ALL AROUND
0.07 MAX
ALL AROUND (1.45)
(2)
(R0.05) TYP
4X (1.45)
4X (2)
5X ( 1.2) (1.7) TYP
(6.8)
FULL R
TYP
TO-220 - 16.51 mm max heightKC0005A
TO-220
4215009/A 01/2017
LAND PATTERN
NON-SOLDER MASK DEFINED
SCALE:12X
PKG
PKG
METAL
TYP
SOLDER MASK
OPENING, TYP
15
MECHANICAL DATA
KTT0005B
www.ti.com
BOTTOM SIDE OF PACKAGE
TS5B (Rev D)
MECHANICAL DATA
NEB0005F
www.ti.com
www.ti.com
PACKAGE OUTLINE
3X 2.67
2.03
5.21
4.44
5.34
4.32
3X
12.7 MIN
2X 1.27 0.13
3X 0.55
0.38
4.19
3.17
3.43 MIN
3X 0.43
0.35
(2.54)
NOTE 3
2X
2.6 0.2
2X
4 MAX
SEATING
PLANE
6X
0.076 MAX
(0.51) TYP
(1.5) TYP
TO-92 - 5.34 mm max heightLP0003A
TO-92
4215214/B 04/2017
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. Lead dimensions are not controlled within this area.
4. Reference JEDEC TO-226, variation AA.
5. Shipping method:
a. Straight lead option available in bulk pack only.
b. Formed lead option available in tape and reel or ammo pack.
c. Specific products can be offered in limited combinations of shipping medium and lead options.
d. Consult product folder for more information on available options.
EJECTOR PIN
OPTIONAL
PLANE
SEATING
STRAIGHT LEAD OPTION
321
SCALE 1.200
FORMED LEAD OPTION
OTHER DIMENSIONS IDENTICAL
TO STRAIGHT LEAD OPTION
SCALE 1.200
www.ti.com
EXAMPLE BOARD LAYOUT
0.05 MAX
ALL AROUND
TYP
(1.07)
(1.5) 2X (1.5)
2X (1.07)
(1.27)
(2.54)
FULL R
TYP
( 1.4)0.05 MAX
ALL AROUND
TYP
(2.6)
(5.2)
(R0.05) TYP
3X ( 0.9) HOLE
2X ( 1.4)
METAL
3X ( 0.85) HOLE
(R0.05) TYP
4215214/B 04/2017
TO-92 - 5.34 mm max heightLP0003A
TO-92
LAND PATTERN EXAMPLE
FORMED LEAD OPTION
NON-SOLDER MASK DEFINED
SCALE:15X
SOLDER MASK
OPENING
METAL
2X
SOLDER MASK
OPENING
123
LAND PATTERN EXAMPLE
STRAIGHT LEAD OPTION
NON-SOLDER MASK DEFINED
SCALE:15X
METAL
TYP
SOLDER MASK
OPENING
2X
SOLDER MASK
OPENING
2X
METAL
12 3
www.ti.com
TAPE SPECIFICATIONS
19.0
17.5
13.7
11.7
11.0
8.5
0.5 MIN
TYP-4.33.7
9.75
8.50
TYP
2.9
2.4 6.75
5.95
13.0
12.4
(2.5) TYP
16.5
15.5
32
23
4215214/B 04/2017
TO-92 - 5.34 mm max heightLP0003A
TO-92
FOR FORMED LEAD OPTION PACKAGE
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Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Texas Instruments:
LM2931AM-5.0 LM2931AM-5.0/NOPB LM2931AMX-5.0 LM2931AMX-5.0/NOPB LM2931AS-5.0 LM2931AS-
5.0/NOPB LM2931ASX-5.0 LM2931ASX-5.0/NOPB LM2931AT-5.0 LM2931AT-5.0/NOPB LM2931AZ-5.0/LFT1
LM2931AZ-5.0/LFT3 LM2931AZ-5.0/LFT4 LM2931AZ-5.0/NOPB LM2931CM LM2931CM/NOPB LM2931CMX
LM2931CMX/NOPB LM2931CS LM2931CS/NOPB LM2931CT LM2931CT/LF03 LM2931CT/LF04
LM2931CT/NOPB LM2931M-5.0 LM2931M-5.0/NOPB LM2931MX-5.0 LM2931MX-5.0/NOPB LM2931S-5.0
LM2931S-5.0/NOPB LM2931T-5.0 LM2931T-5.0/NOPB LM2931Z-5.0/LFT1 LM2931Z-5.0/NOPB LM2931Z-5.0/LFT2