LM337L

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SNVS780D – MAY 1998 – REVISED MAY 2013

LM337L 3-Terminal Adjustable Regulator

Check for Samples: LM337L

Normally, only a single 1

μF solid tantalum output

1

FEATURES

capacitor is needed unless the device is situated

2

•

Adjustable Output Down to 1.2V

more than 6 inches from the input filter capacitors, in

•

Ensured 100mA Output Current

which case an input bypass is needed. A larger

output capacitor can be added to improve transient

•

Line Regulation Typically 0.01%/V

response. The adjustment terminal can be bypassed

•

Load Regulation Typically 0.1%

to achieve very high ripple rejection ratios which are

•

Current Limit Constant With Temperature

difficult

to

achieve

with

standard

3-terminal

regulators.

•

Eliminates the Need to Stock Many Voltages

•

Standard 3-Lead Transistor Package

Besides replacing fixed regulators, the LM337L is

useful in a wide variety of other applications. Since

•

80 dB Ripple Rejection

the regulator is “floating” and sees only the input-to-

•

Output is Short Circuit Protected

output

differential

voltage,

supplies

of

several

•

Available in the 6-Bump DSBGA Package

hundred volts can be regulated as long as the

maximum input-to-output differential is not exceeded.

•

See AN-1112 (Literature Number SNVA009) for

DSBGA Considerations

Also, it makes an especially simple adjustable

switching regulator, a programmable output regulator,

DESCRIPTION

or by connecting a fixed resistor between the

adjustment and output, the LM337L can be used as a

The LM337L is an adjustable 3-terminal negative

precision current regulator. Supplies with electronic

voltage regulator capable of supplying 100mA over a

shutdown

can

be

achieved

by

clamping

the

1.2V to 37V output range. It is exceptionally easy to

adjustment terminal to ground which programs the

use and requires only two external resistors to set the

output to 1.2V where most loads draw little current.

output voltage. Furthermore, both line and load

regulation are better than standard fixed regulators.

The LM337L is available in a standard TO-92

Also, the LM337L is packaged in a standard TO-92

transistor package, SO-8 surface mount package,

transistor package which is easy to use.

and in our new 12 mil diameter bump DSBGA

package. The LM337L is rated for operation over a

In

addition

to

higher

performance

than

fixed

−25°C to +125°C range.

regulators, the LM337L offers full overload protection.

Included on the chip are current limit, thermal

For applications requiring greater output current in

overload protection and safe area protection. All

excess of 0.5A and 1.5A, see LM137 series data

overload protection circuitry remains fully functional

sheets. For the positive complement, see series

even if the adjustment terminal is disconnected.

LM117 and LM317L data sheets.

Typical Application

1.2V-25V Adjustable Regulator

1

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

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 1998–2013, 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.