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Part Name
Description
CA3274 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
CA3274
Current Limiting Power Switch with Current Limiter Sense Flag
Intersil
CA3274 Datasheet PDF : 5 Pages
1
2
3
4
5
Block Diagram
CONTROL
7
IN
FLAG
1
OUT
Q1
4
SIGNAL
GROUND
CA3274
V
CC
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
V
CC
6
5
V
CC1
LOAD
6A
FLAG
1
OUT
Q1
4
SIGNAL
GROUND
LATCH
-
SENSE 2
+
IN
335mV
3
POWER
GROUND
DARLINGTON
0.056
Ω
SENSE LEVEL EQUALS
335mV
0.056
Ω
=
6A
FIGURE 1. TYPICAL APPLICATION AS A POWER SWITCH PRE-DRIVER SWITCH
10-41
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