LT1085IM-TR 데이터 시트보기 (PDF) - Linear Technology

부품명

상세내역

제조사

LT1085IM-TR

7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators

Linear Technology 

LT1083/LT1084/LT1085

7.5A, 5A, 3A Low Dropout

Positive Adjustable Regulators

FEATURES

n 3-Terminal Adjustable

n Output Current of 3A, 5A or 7.5A

n Operates Down to 1V Dropout

n Guaranteed Dropout Voltage at Multiple Current Levels

n Line Regulation: 0.015%

n Load Regulation: 0.1%

n 100% Thermal Limit Functional Test

n Fixed Versions Available

n Available in 3-Lead Plastic TO-220, TO-3P and DD

Packages

APPLICATIONS

n High Efficiency Linear Regulators

n Post Regulators for Switching Supplies

n Constant Current Regulators

n Battery Chargers

DEVICE

OUTPUT CURRENT*

LT1083

7.5A

LT1084

5.0A

LT1085

3.0A

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

DESCRIPTION

The LT®1083 series of positive adjustable regulators are

designed to provide 7.5A, 5A and 3A with higher efficiency

than currently available devices. All internal circuitry is

designed to operate down to 1V input-to-output differential

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 cur-

rents. On-chip trimming adjusts the reference voltage to

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

on both the regulator and power source circuitry under

overload conditions.

The LT1083/LT1084/LT1085 devices are pin compatible

with older 3-terminal regulators. A 10μF output capacitor

is required on these new devices. However, this is included

in most regulator designs.

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

rent is wasted as quiescent current, the LT1083 quiescent

current flows into the load, increasing efficiency.

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

All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

5V, 7.5A Regulator

VIN ≥ 6.5V

+

IN

10μF

LT1083 OUT

ADJ

*REQUIRED FOR STABILITY

121Ω

1% +

365Ω

1%

5V AT 7.5A

10μF*

TANTALUM

1083/4/5 ADJ TA01

Dropout Voltage vs Output Current

2

1

0

0

IFULL LOAD

OUTPUT CURRENT

1083/4/5 ADJ TA02

108345fg

1

Share Link: