ISL6420B Intersil Corporation, ISL6420B Datasheet - Page 4

• Manufacturer Part Number: ISL6420B
• Description: Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
• Manufacturer: Intersil Corporation

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Typical 12V Input DC/DC Application Schematic
Typical 5V Input DC/DC Application Schematic
C7
C7
5V
12V
C1
R2
C1
R3
R2
C8
R4
R3
C2
PGOOD
CONFIGURATION FOR DDR TERMINATION/EXTERNALLY REFERENCED TRACKING APPLICATIONS
R4
SS/EN
SGND
CDEL
C2
PGOOD
4
FB
RT
SGND
CDEL
ENSS
FB
RT
VIN
C10
C11
VMSET/MODE
REF
VIN
C11
R5
VCC5
REF
PVCC
+
-
COMP
OSC
R5
VMSET/MODE
PVCC
+
-
MONITOR AND
COMP
OSC
C12
PROTECTION
C3
MONITOR AND
PROTECTION
+
-
C3
-
+
R6
VCC5
REFOUT
ISL6420B
VCC5
REFOUT
C4
C12
OCSET
BOOT
UGATE
PHASE
LGATE
PGND
C4
GPIO1/REFIN
GPIO1/REFIN <-- VREF = VDDQ/2
GPIO2
C13
OCSET
BOOT
UGATE
PHASE
LGATE
PGND
GPIO2
Q1
C5
R1
Q1
C5
R1
Q2
Q2
1.25V VREF
TO REFIN OF VTT SUPPLY
D1
C8
D1
C9
L1
C9
C6
L1
C10
C6
2.5V/1.25V
April 27, 2009
3.3V
FN6901.0