LTC4213IDDB 查看數據表（PDF） - Linear Technology

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LTC4213IDDB

No RSENSE™ Electronic Circuit Breaker

Linear Technology 

FEATURES

■ Fast 1µs Response Circuit Breaker

■ 3 Selectable Circuit Breaker Thresholds

■ No Sense Resistor Required

■ Dual Level Overcurrent Fault Protection

■ Controls Load Voltages from 0V to 6V

■ High Side Drive for External N-Channel FET

■ Undervoltage Lockout

■ READY Pin Signals When Circuit Breaker Armed

■ Small Plastic (3mm x 2mm) DFN Package

U

APPLICATIO S

■ Electronic Circuit Breaker

■ High-Side Switch

■ Hot Board Insertion

TYPICAL APPLICATIO

1.25V Electronic Circuit Breaker

VIN

1.25V

SI4864DY

VOUT

1.25V

3.5A

VBIAS

2.3V TO 6V

OFF ON

SENSEP GATE SENSEN

VCC

LTC4213

VBIAS

10k

ON

GND ISEL READY

4213 TA01

LTC4213

No RSENSE™

Electronic Circuit Breaker

DESCRIPTIO

The LTC®4213 is an Electronic Circuit Breaker. An over-

current circuit breaker senses the voltage across the drain

and source terminals of an external N-channel MOSFET

with no need for a sense resistor. The advantages are a

lower cost and reduced voltage and power loss in the

switch path. An internal high-side driver controls the

external MOSFET gate.

Two integrated comparators provide dual level over-

current protection over the bias supply to ground common

mode range. The slow comparator has 16µs response

while the fast comparator trips in 1µs. The circuit breaker

has three selectable trip thresholds: 25mV, 50mV and

100mV. An ON pin controls the ON/OFF and resets circuit

breaker faults. READY signals the MOSFET is conducting

and the circuit breaker is armed. The LTC4213 operates

from VCC = 2.3V to 6V.

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

No RSENSE is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

Severe Overload Response

IOUT

(50A/DIV)

VOUT

(1V/DIV)

VGATE

(5V/DIV)

VIN

(1V/DIV)

2µs/DIV

4213 TA01b

4213f

1

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