LM2931-N Series

100-mA, 26-V, high-PSRR, low-dropout voltage regulator

Catalog

100-mA, 26-V, high-PSRR, low-dropout voltage regulator

Part	Voltage Dropout (Max) [Max]	Current - Supply (Max) [Max]	Mounting Type	Voltage - Input (Max) [Max]	PSRR	Number of Regulators	Current - Output	Output Type	Package / Case	Current - Quiescent (Iq)	Voltage - Output (Min/Fixed)	Supplier Device Package	Output Configuration	Protection Features	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max)	Output Type	Package / Case [y]	Package / Case [x]
Texas Instruments LM2931AS-5.0	0.3 V	30 mA	Surface Mount	26 V	80 dB	1	100 mA	1.81 mOhm	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 mA	5 V	TO-263 (DDPAK-3)	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931AZ-5.0/LFT1	0.3 V	30 mA	Through Hole	26 V	80 dB	1	100 mA	1.81 mOhm	TO-226-3 TO-92-3	15 mA	5 V	TO-92-3	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931AZ-5.0/NOPB	0.3 V	30 mA	Through Hole	26 V	80 dB	1	100 mA	1.81 mOhm	TO-226-3 TO-92-3	15 mA	5 V	TO-92-3	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931S-5.0/NOPB	0.3 V	15 mA	Surface Mount	26 V	55 dB	1	100 mA	1.81 mOhm	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	1 mA	5 V	TO-263 (DDPAK-3)	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931CS	0.3 V	15 mA	Surface Mount	26 V	55 dB	1	100 mA		D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1 mA		TO-263 (DDPAK-5)	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C	24 V	Adjustable
Texas Instruments LM2931CT/LF03	0.3 V	15 mA	Through Hole	26 V	55 dB	1	100 mA		TO-220-3	1 mA		TO-220-3	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C	24 V	Adjustable
Texas Instruments LM2931Z-5.0/LFT1	0.3 V	15 mA	Through Hole	26 V	55 dB	1	100 mA	1.81 mOhm	TO-226-3 TO-92-3	1 mA	5 V	TO-92-3	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931ASX-5.0/NOPB	0.3 V	30 mA	Surface Mount	26 V	80 dB	1	100 mA	1.81 mOhm	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA	15 mA	5 V	TO-263 (DDPAK-3)	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C
Texas Instruments LM2931MX-5.0	0.3 V	15 mA	Surface Mount	26 V	55 dB	1	100 mA	1.81 mOhm	8-SOIC	1 mA	5 V	8-SOIC	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C			3.9 mm	0.154 in
Texas Instruments LM2931CT	0.3 V	15 mA	Through Hole	26 V	55 dB	1	100 mA		TO-220-5	1 mA		TO-220-5	Positive	Over Temperature Reverse Polarity Short Circuit	85 °C	-40 °C	24 V	Adjustable

Catalog

100-mA, 26-V, high-PSRR, low-dropout voltage regulator

Key Features

• Very Low Quiescent CurrentOutput Current in Excess of 100 mAInput-output Differential Less than 0.6VReverse Battery Protection60V Load Dump Protection−50V Reverse Transient ProtectionShort Circuit ProtectionInternal Thermal Overload ProtectionMirror-image Insertion ProtectionAvailable in TO-220, TO-92, TO-263, or SOIC-8 PackagesAvailable as Adjustable with TTL Compatible SwitchAll trademarks are the property of their respective owners.Very Low Quiescent CurrentOutput Current in Excess of 100 mAInput-output Differential Less than 0.6VReverse Battery Protection60V Load Dump Protection−50V Reverse Transient ProtectionShort Circuit ProtectionInternal Thermal Overload ProtectionMirror-image Insertion ProtectionAvailable in TO-220, TO-92, TO-263, or SOIC-8 PackagesAvailable as Adjustable with TTL Compatible SwitchAll trademarks are the property of their respective owners.

Description

The LM2931-N positive voltage regulator features a very low quiescent current of 1mA or less when supplying 10mA loads. This unique characteristic and the extremely low input-output differential required for proper regulation (0.2V for output currents of 10mA) make the LM2931-N the ideal regulator for standby power systems. Applications include memory standby circuits, CMOS and other low power processor power supplies as well as systems demanding as much as 100mA of output current. Designed originally for automotive applications, the LM2931-N and all regulated circuitry are protected from reverse battery installations or 2 battery jumps. During line transients, such as a load dump (60V) when the input voltage to the regulator can 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. The LM2931-N positive voltage regulator features a very low quiescent current of 1mA or less when supplying 10mA loads. This unique characteristic and the extremely low input-output differential required for proper regulation (0.2V for output currents of 10mA) make the LM2931-N the ideal regulator for standby power systems. Applications include memory standby circuits, CMOS and other low power processor power supplies as well as systems demanding as much as 100mA of output current. Designed originally for automotive applications, the LM2931-N and all regulated circuitry are protected from reverse battery installations or 2 battery jumps. During line transients, such as a load dump (60V) when the input voltage to the regulator can 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.