LTC1421IGPBF Linear Technology Corporation, LTC1421IGPBF Datasheet

LTC1421IGPBF

Manufacturer Part Number

LTC1421IGPBF

Description

SSOP-24

Manufacturer

Linear Technology Corporation

Datasheet

1.LTC1421IGPBF.pdf (24 pages)

Specifications of LTC1421IGPBF

Date_code

06+

Current page: 1 of 24
Download datasheet (330Kb)

FEATURES

TYPICAL APPLICATIO

APPLICATIO S

Hot Swap is a trademark of Linear Technology Corporation.

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

Allows Safe Board Insertion and Removal from a

Live Backplane

System Reset and Power Good Control Outputs

Programmable Electronic Circuit Breaker

User Programmable Supply Voltage Power-Up Rate

High Side Driver for Two External N-Channels

Controls Supply Voltages from 3V to 12V

Connection Inputs Detect Board Insertion or Removal

Undervoltage Lockout

Power-On Reset Input

Hot Board Insertion

Electronic Circuit Breaker

FAULT

DATA

GND

POR

BUS

BACKPLANE

PC BOARD

1 F

CON2

AUXV

FAULT

POR

CON1

CCLO

0.005

SETLO GATELO V

GND

MTB50N06E

DISABLE

OUTLO

LTC1421

DESCRIPTIO

QuickSwitch

The LTC

that allow a board to be safely inserted and removed from a

live backplane. Using external N-channel pass transistors,

the board supply voltages can be ramped up at a program-

mable rate. Two high side switch drivers control the N-

channel gates for supply voltages ranging from 3V to 12V.

A programmable electronic circuit breaker protects against

shorts. Warning signals indicate that the circuit breaker

has tripped, a power failure has occurred or that the switch

drivers are turned off. The reset output can be used to

generate a system reset when the power cycles or a fault

occurs. The two connect inputs can be used with stag-

gered connector pins to indicate board insertion or re-

moval. The power-on reset input can be used to cycle the

board power or clear the circuit breaker.

The trip point of the ground sense comparator is set at

0.1V for LTC1421 and 2.5V for LTC1421-2.5.

The LTC1421/LTC1421-2.5 are available in 24-pin SO and

SSOP packages.

BEA

BEB

GND

CCHI

QS3384

0.025

SETHI GATEHI V

1/2 Si4936DY

1421/LTC1421-2.5 are Hot Swap

QuickSwitch IS A REGISTERED TRADEMARK

OF QUALITY SEMICONDUCTOR CORPORATION.

Hot Swap Controller

COMPOUT

0.47 F

PWRGD

COMP

RESET

RAMP

OUTHI

CPON

LTC1421/LTC1421-2.5

REF

10k

–

20k

DATA BUS

1 F

0.1 F

1/2 Si4936DY

16k

20k

7.15k

LOAD

I/O

RESET

1421 TA01

– 12V

12V

controllers

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