LM2931-N

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SNOSBE5G – MARCH 2000 – REVISED APRIL 2013

LM2931-N Series Low Dropout Regulators

Check for Samples: LM2931-N

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FEATURES

DESCRIPTION

The LM2931-N positive voltage regulator features a

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•

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

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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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.