LT1431I Linear Technology Corporation, LT1431I Datasheet

LT1431I

Manufacturer Part Number

LT1431I

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1431I.pdf (12 pages)

2.LT1431I.pdf (12 pages)

3.LT1431I.pdf (12 pages)

Specifications of LT1431I

Case

SOP8

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Current page: 1 of 12
Download datasheet (273Kb)

FEATURE

TYPICAL

PPLICATI

Linear Regulators

Adjustable Power Supplies

Switching Power Supplies

Guaranteed 0.4% Initial Voltage Tolerance

0.1 Typical Dynamic Output Impedance

Fast Turn-On

Sink Current Capability, 1mA to 100mA

Low Reference Pin Current

–

REGULATOR

SWITCHING

PPLICATI

Isolated 5V Regulator

COLL

GND-F

The LT1431 is an adjustable shunt voltage regulator with

100mA sink capability, 0.4% initial reference voltage tol-

erance, and 0.3% typical temperature stability. On-chip

divider resistors allow the LT1431 to be configured as a 5V

shunt regulator, with 1% initial voltage tolerance and

requiring no additional external components. By adding

two external resistors, the output voltage may be set to any

value between 2.5V and 36V. The nominal internal current

limit of 100mA may be decreased by including one exter-

nal resistor.

A simplified three pin version, the LT1431Z/IZ, is available

for applications as an adjustable reference and is pin

compatible with the TL431.

ESCRIPTIO

Programmable Reference

LT1431

COMP

4mA/V

gm =

–

GND-S

2.5V

LT1431 • TA01

TOP

REF

MID

LT1431

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