LM140LQML

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SNVS381A – MARCH 2006 – REVISED MAY 2013

LM140LQML Series 3-Terminal Positive Regulators

Check for Samples: LM140LQML

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FEATURES

DESCRIPTION

The

LM140L

series

of

three

terminal

positive

2

•

Line Regulation of 0.04%/V

regulators is available with several fixed output

•

Load Regulation of 0.01%/mA

voltages making them useful in a wide range of

•

applications. The LM140LA is an improved version of

and ±4% over the Temperature Range

the LM78LXX series with a tighter output voltage

tolerance (specified over the full military temperature

•

Output Current of 100 mA

range), higher ripple rejection, better regulation and

•

Internal Thermal Overload Protection

lower quiescent current. The LM140LA regulators

•

Output Transistor Safe Area Protection

and 0.01%/mA load regulation. When used as a

•

Internal Short Circuit Current Limit

zener diode/resistor combination replacement, the

LM140LA usually results in an effective output

impedance improvement of two orders of magnitude,

and lower quiescent current. These regulators can

provide local on card regulation, eliminating the

distribution problems associated with single point

regulation. The voltages available allow the LM140LA

to be used in logic systems, instrumentation, Hi-Fi,

and other solid state electronic equipment. Although

designed primarily as fixed voltage regulators, these

devices can be used with external components to

obtain adjustable voltages and currents.

With adequate heat sinking the regulator can deliver

100 mA output current. Current limiting is included to

limit the peak output current to a safe value. Safe

area protection for the output transistor is provided to

limit internal power dissipation. If internal power

dissipation becomes too high for the heat sinking

provided, the thermal shut-down circuit takes over,

preventing the IC from overheating.

Output Voltage Options

Device ID

Output Voltage

LM140LA-5.0

5V

LM140LA-12

12V

LM140LA-15

15V

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PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, 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.