CA3274E View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

CA3274E

Current Limiting Power Switch with Current Limiter Sense Flag

Intersil 

Block Diagram

CONTROL 7

IN

FLAG 1

OUT

Q1

4

SIGNAL

GROUND

CA3274

VCC

8

CONTROL

LOGIC AND

CURRENT

LIMITER

LATCH

D1 R4

RELAY OR

SOLENOID LOAD

6

DRIVE IN

Q2

5

DRIVE OUT

R2

-

SENSE 2

+ IN

R3

SENSE

R1

335mV

3

POWER

GROUND

CONTROL 7

IN

8

CONTROL

LOGIC &

CURRENT

LIMITER

Q2

DRIVE

VCC

6

5

VCC1

LOAD

6A

FLAG 1

OUT

Q1

4

SIGNAL

GROUND

LATCH

- SENSE 2

+ IN

335mV

3

POWER

GROUND

DARLINGTON

0.056Ω

SENSE LEVEL EQUALS

335mV

0.056Ω

=

6A

FIGURE 1. TYPICAL APPLICATION AS A POWER SWITCH PRE-DRIVER SWITCH

10-41

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