1

LTC4210-1/LTC4210-2

421012f

APPLICATIO S

DESCRIPTIO

FEATURES

TYPICAL APPLICATIO

The LTC

that allows a board to be safely inserted and removed from

a live backplane. An internal high side switch driver

controls the GATE of an external N-channel MOSFET for a

supply voltage ranging from 2.7V to 16.5V. The LTC4210

provides the initial timing cycle and allows the GATE to be

ramped up at an adjustable rate.

The LTC4210 features a fast current limit loop providing

active current limiting together with a circuit breaker

timer. The signal at the ON pin turns the part on and off and

is also used for the reset function.

This part is available in two options: the LTC4210-1 for

automatic retry on overcurrent fault and the LTC4210-2

for latch off on an overcurrent fault.

s

Allows Safe Board Insertion and Removal

from a Live Backplane

s

Adjustable Analog Current Limit

with Circuit Breaker

s

Fast Response Limits Peak Fault Current

s

Automatic Retry or Latch Off On Current Fault

s

Adjustable Supply Voltage Power-Up Rate

s

High Side Drive for External MOSFET Switch

s

Controls Supply Voltages from 2.7V to 16.5V

s

Undervoltage Lockout

s

Adjustable Overvoltage Protection

s

Low Profile (1mm) SOT-23 (ThinSOT

s

Hot Board Insertion

s

Electronic Circuit Breaker

s

Industrial High Side Switch/Circuit Breaker

Hot Swap Controller in

6-Lead SOT-23 Package

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

Single Channel 5V Hot Swap Controller

ThinSOT and Hot Swap are trademarks of Linear Technology Corporation.

Power-Up Sequence

+

SENSE

LTC4210

470

µF

5V

4A

GND

4210 TA01

100

Ω

GATE

GND

TIMER

ON

SHORT

LONG

5V

GND

LONG

Z1: ISMA10A OR SMAJ10A

10k

20k

10

Ω

0.01

Ω

PCB EDGE

CONNECTOR

(MALE)

Q1

Si4410DY

Z1

OPTIONAL

100

Ω

0.22

µF

0.1

µF

0.01

µF

BACKPLANE

CONNECTOR

(FEMALE)

4210 TA02

10ms/DIV

(0.5A/DIV)

(5V/DIV)

(2V/DIV)

(1V/DIV)