LT1529IQPBF Linear Technology Corporation, LT1529IQPBF Datasheet

LT1529IQPBF

Manufacturer Part Number

LT1529IQPBF

Description

TO263

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1529IQPBF.pdf (12 pages)

2.LT1529IQPBF.pdf (12 pages)

Specifications of LT1529IQPBF

Date_code

09+

Current page: 1 of 12
Download datasheet (151Kb)

FEATURES

TYPICAL APPLICATIO

■

APPLICATIO S

■

All other trademarks are the property of their respective owners.

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

Dropout Voltage: 0.6V at I

Output Current: 3A

Quiescent Current: 50µA

No Protection Diodes Needed

Adjustable Output from 3.8V to 14V

3.3V and 5V Fixed Output Voltages

Controlled Quiescent Current in Dropout

Shutdown I

Stable with 22µF Output Capacitor

Reverse Battery Protection

No Reverse Current

Thermal Limiting

High Efficiency Regulator

Regulator for Battery-Powered Systems

Post Regulator for Switching Supplies

5V to 3.3V Logic Regulator

> 5.5V

= 16µA

5V Supply with Shutdown

SHDN

< 0.25

SHDN

> 2.8

LT1529-5

(PIN 4)

GND

OUTPUT

SENSE

OUT

OUTPUT

OFF

= 3A

LT1529 • TA01

22µF

3A Low Dropout Regulators

DESCRIPTIO

The LT

regulators with micropower quiescent current and shut-

down. The devices are capable of supplying 3A of output

current with a dropout voltage of 0.6V. Designed for use

in battery-powered systems, the low quiescent current,

50µA operating and 16µA in shutdown, make them an

ideal choice. The quiescent current is well controlled; it

does not rise in dropout as it does with many other low

dropout PNP regulators.

Other features of the LT1529 /LT1529-3.3/LT1529-5 in-

clude the ability to operate with small output capacitors.

They are stable with 22µF on the output while most older

devices require up to 100µF for stability. Small ceramic

capacitors can be used, enhancing manufacturabiltiy.

Also the input may be connected to voltages lower than the

output voltage, including negative voltages, without re-

verse current flow from output to input. This makes the

LT1529/LT1529-3.3/LT1529-5 ideal for backup power

situations where the output is held high and the input is at

ground or reversed. Under these conditions, only 16µA

will flow from the OUTPUT pin to ground. The devices are

available in 5-lead TO-220 and 5-lead DD packages.

1529/LT1529-3.3/LT1529-5 are 3A low dropout

0.6

0.5

0.1

0.4

0.3

0.2

Quiescent Current

0.5

LT1529-3.3/LT1529-5

with Micropower

Dropout Voltage

OUTPUT CURRENT (A)

1.0

and Shutdown

1.5

2.0

2.5

LT1529 • TA02

3.0

LT1529

152935fb

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