Thin traces for

IADJUSTMENT

(negligible)

1-2F tantalum or

10-2F aluminum

1-2F tantalum if

>10 cm from

supply capacitor

OUTPUT

INPUT

ADJUSTMENT

Thicker traces for

1.5 A

LM237, LM337

www.ti.com

SLVS047L – NOVEMBER 1981 – REVISED JANUARY 2015

11 Layout

11.1 Layout Guidelines

Traces on the input and output pins should be thick enough to carry 1.5 A of current without violating thermal

requirements of the device or the system. In addition, a 1-µF solid tantalum capacitor is required on the input pin

if the regulator is more than 10 cm from the power supply filter capacitor. A 1-µF solid tantalum or 10-µF

aluminum electrolytic capacitor is required on the output pin for stability.

11.2 Layout Example

Figure 5. Layout Diagram

12 Device and Documentation Support

12.1 Related Links

The table below lists quick access links. Categories include technical documents, support and community

resources, tools and software, and quick access to sample or buy.

Table 1. Related Links

TECHNICAL

TOOLS &

SUPPORT &

PARTS

PRODUCT FOLDER

SAMPLE & BUY

DOCUMENTS

SOFTWARE

COMMUNITY

LM237

Click here

Click here

Click here

Click here

Click here

LM337

Click here

Click here

Click here

Click here

Click here

12.2 Trademarks

12.3 Electrostatic Discharge Caution

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.

12.4 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

13 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most

current data available for the designated devices. This data is subject to change without notice and revision of

this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

Copyright © 1981–2015, Texas Instruments Incorporated

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11

Product Folder Links: LM237 LM337