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ISL6420 Datasheet(PDF) 3 Page - Intersil Corporation

Part # ISL6420
Description  Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6420 Datasheet(HTML) 3 Page - Intersil Corporation

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3
FN9151.4
July 18, 2005
Functional Block Diagram
Typical 5V Input DC/DC Application Schematic
GENERATOR
PWM
COMP
ERROR
AMP
VIN
VMSET/MODE
PGND
OCSET
GPIO2
REFOUT
PHASE
LOGIC
BOOT
UGATE
LGATE
PHASE
REFERENCE
+
-
+
-
VOLTAGE
MARGINING
GPIO1/REFIN
0.6V
OV/UV
VOLTAGE
MONITOR
RAMP
PVCC
PWM
LOGIC
OSC
EN/SS
UVFLT
OVFLT
UVFLT
OVFLT
OCFLT
FAULT
LOGIC
FB
COMP
FB
ENSS
RT
LDO
VCC5
+
-
PHASE
OVERCURRENT
COMP
SGND
SS
CDEL
PGOOD
RT
FB
COMP
ENSS
REF
-
+
+
-
OSC
VIN
5V
C1
L1
C10
0.1
µF
UGATE
OCSET
PHASE
BOOT
D1
Q1
C7
R2
R4
C12
C11
C2
C6
C5
R1
C9
LGATE
Q2
3.3V
R3
MONITOR AND
PROTECTION
+
-
+
-
GPIO1/REFIN
GPIO2
REFOUT
VMSET/MODE
CDEL
PGND
PVCC
SGND
VCC5
C4
C3
PGOOD
R5
C8
R6
C13
ISL6420


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