Datasheet > LT138AK

LT138AK

更新时间： 2022-12-13 11:12:04

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
12页	189K
描述
5A Positive Adjustable Voltage Regulator

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LT138AK 数据手册

LT138A/LT338A

LM138/LM338

5A Positive Adjustable

Voltage Regulator

FEATURES

DESCRIPTIO

■

Guaranteed 1% Initial Tolerance

The LT^®138A series of adjustable regulators provide 5A

outputcurrentoveranoutputvoltagerangeof1.2Vto32V.

The internal voltage reference is trimmed to less than 1%,

enabling a very tight output voltage. In addition to excel-

lent line and load regulation, with full overload protection,

the LT138A incorporates new current limiting circuitry

allowing large transient load currents to be handled for

short periods. Transient load currents of up to 12A can be

supplied without limiting, eliminating the need for a large

output capacitor.

■

Guaranteed 0.3% Load Regulation

■

Guaranteed 5A Output Current

■

100% Thermal Limit Burn-In

■

12A Transient Output Current

APPLICATIO S

■

High Power Linear Regulator

■

Battery Chargers

■

Power Driver

Constant-Current Regulator

The LT138A is an improved version of the popular LM138

with improved circuit design and advanced process tech-

niques to provide superior performance and reliability.

■

The graph below shows the significant improvement in

output voltage tolerance achieved by using the LT138A or

LT338A.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

Parallel Regulators for Higher Current*

Output Voltage Error

LT338A

ADJ

0.01Ω**

OUT

2% RESISTORS

LM338

1% RESISTORS

LM338

LT350A

ADJ

0.016Ω**

LT338A

OUT

121Ω

2% RESISTORS

1% RESISTORS

LT338A

365Ω

100

138/338 TA01

OUTPUT VOLTAGE (V)

*THIS CIRCUIT WILL NOT WORK WITH LM VERSION DEVICES

**CURRENT SHARING RESISTORS DEGRADE REGULATION TO 1%

138A/338A TA02

12 3 4 5 6 7...12

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