Datasheet > LT1085CT-3.3

LT1085CT-3.3

更新时间： 2024-11-23 05:43:23

品牌	Logo	应用领域
Linear Systems		稳压器
页数	文件大小	规格书
12页	138K
描述
3A, 5A, 7.5A Low Dropout Positive Fixed Regulators

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LT1085CT-3.3 数据手册

LT1083/LT1084/LT1085 Fixed

3A, 5A, 7.5A Low Dropout

Positive Fixed Regulators

FEATURES

DESCRIPTIO

The LT^®1083 series of positive adjustable regulators are

designedtoprovide3A, 5Aand7.5Awithhigherefficiency

than currently available devices. All internal circuitry is

■

Three-Terminal 3.3V, 3.6V, 5V and 12V

■

Output Current of 3A, 5A or 7.5A

■

Operates Down to 1V Dropout

■

Guaranteed Dropout Voltage at Multiple Current Levels designedtooperatedownto1Vinputtooutputdifferential

■

Line Regulation: 0.015%

and the dropout voltage is fully specified as a function of

load current. Dropout is guaranteed at a maximum of 1.5V

at maximum output current, decreasing at lower load

currents. On-chip trimming adjusts the output voltage to

1%. Current limit is also trimmed, minimizing the stress

on both the regulator and power source circuitry under

overload conditions.

Load Regulation: 0.1%

100% Thermal Limit Functional Test

Adjustable Versions Available

APPLICATIO S

■

High Efficiency Linear Regulators

The LT1083 series devices are pin compatible with older

three-terminal regulators. A 10μF output capacitor is

required on these new devices; however, this is usually

included in most regulator designs.

■

Post Regulators for Switching Supplies

■

Constant Current Regulators

Battery Chargers

■

DEVICE

OUTPUT CURRENT*

Unlike PNP regulators, where up to 10% of the output

current is wasted as quiescent current, the LT1083 quies-

cent current flows into the load, increasing efficiency.

LT1083

LT1084

LT1085

7.5 Amps

5.0 Amps

3.0 Amps

*For a 1.5A low dropout regulator see the LT1086 data sheet.

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

5V, 7.5A Regulator

Dropout Voltage vs Output Current

≥ 6.5V

5V AT 7.5A

LT1083-5

22μF*

TANTALUM

10μF

LT1083/4/5 TA01

*REQUIRED FOR STABILITY

FULLLOAD

OUTPUT CURRENT (A)

1083/4/5 TA02

1083ffd

12 3 4 5 6 7...12

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