ISL6420IRZ Intersil, ISL6420IRZ Datasheet - Page 3

• Manufacturer Part Number: ISL6420IRZ
• Description: IC CTRLR PWM BUCK SYNC SGL 20QFN
• Manufacturer: Intersil

Specifications of ISL6420IRZ

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 1.4MHz
• Duty Cycle: 100%
• Voltage - Supply: 4.5 V ~ 16 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Frequency-max: 1.4MHz
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional Block Diagram
Typical 5V Input DC/DC Application Schematic
VMSET/MODE
GPIO1/REFIN
0.1µF
C7
REFOUT
GPIO2
COMP
SGND
5V
FB
C1
R2
C8
R3
R4
PGOOD
C2
3
SGND
CDEL
ENSS
MARGINING
FB
RT
SS
VOLTAGE
VIN
R5
C11
REF
VCC5
VMSET/MODE
REFERENCE
PVCC
+
-
+
C12
-
COMP
OSC
0.6V
MONITOR AND
PROTECTION
FB
LDO
VIN
C3
R6
+
-
+
-
ERROR
-
+
AMP
VOLTAGE
MONITOR
OV/UV
VCC5
GENERATOR
REFOUT
ISL6420
RAMP
PHASE
OCSET
+
-
C4
C13
GPIO1/REFIN
OCSET
BOOT
UGATE
PHASE
LGATE
PGND
OVFLT
UVFLT
COMP
PWM
GPIO2
OVFLT
UVFLT
OVERCURRENT
+
-
COMP
Q1
C5
R1
FAULT
LOGIC
LOGIC
OSC
PWM
OCFLT
RT
Q2
D1
C9
PHASE
LOGIC
EN/SS
ENSS
C10
L1
C6
February 13, 2008
BOOT
UGATE
PHASE
LGATE
PGOOD
PVCC
PGND
CDEL
3.3V
FN9151.5