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ISL9440AIRZ Datasheet(PDF) 3 Page - Intersil Corporation

Part # ISL9440AIRZ
Description  Triple, 180째 Out-of-Phase, Step-Down
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL9440AIRZ Datasheet(HTML) 3 Page - Intersil Corporation

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Block Diagram
PWM1
OC1
VCC_5V
VCC_5V
VCC_5V
OCP
OC2
CHANNEL 2
FB2
PWM2
OC3
OC2
OC1
VCC_5V
EN1
EN3
EN2
PGND
ERROR AMP 1
FB1
180k
Ω
+ 0.8V
18.5pF
1400k
Ω
REF
16k
Ω
-
+
ISEN2
OCSET2
2 CLOCK CYCLES
SAME STATE FOR
REQUIRED TO LATCH
OVERCURRENT FAULT
CHANNEL 3
PWM3
OC3
FB3
ISEN3
OCSET3
FB3
FB2
FB1
FB4
VIN
UV/OV
UV
PGOOD
PHASE1
UGATE1
BOOT1
LGATE1
ADAPTIVE DEAD-TIME
V/I SAMPLE TIMING
VIN PGND
RST
VIN
VCC_5V
SGND
ADAPTIVE DEAD-TIME
PHASE2
UGATE2
BOOT2
LGATE2
PGND
V/I SAMPLE TIMING
VCC_5V
VCC_5V
VCC_5V
ISEN1
SAMPLE
CURRENT
SAMPLE
CURRENT
+
1.75V REFERENCE
OCSET1
DUTY CYCLE RAMP GENERATOR
PWM CHANNEL PHASE CONTROL
PGOOD
-
+
-
+
-
+
-
+
G4
+
0.8V REFERENCE
FB4
VE
gm*VE
ADAPTIVE DEAD-TIME
PHASE3
UGATE3
BOOT3
LGATE3
PGND
V/I SAMPLE TIMING
CHANNEL 1
POR
FAULT LATCH
REFERENCE
ENABLE
SOFT-START
BIAS SUPPLIES
EARLY WARNING
(see note 6)


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