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| ISL62391_11 Datasheet, PDF (8/20 Pages) Intersil Corporation – High-Efficiency, Triple-Output System Power Supply Controller | |||
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Block Diagram
ISL62391, ISL62392, ISL62391C, ISL62392C
VIN
VOUT2*
FSET1/2
FB1/2
VREF
0.6V
FCCM
VOUT1/2
R3
MODULATOR
5V
LDO
4.8V
PWM
UGATE
DRIVER
SOFT DISCHARGE
EN1
EN2
LDO3EN
START-UP
AND
SHUTDOWN
LOGIC
LGATE
DRIVER
PVCC
BOOT1/2
UGATE1/2
PHASE1/2
LGATE1/2
PGND
PGOOD
VCC
OCSET1/2
ISEN1/2
10µA
VREF + 16%
FB1/2
VREF - 16%
OCP
UVP
PROTECTION LOGIC
OVP/UVP/OCP/OTP
OVP
THERMAL
MONITOR
BIAS AND
REFERENCE
PVCC
3.3V
LDO
T-PAD
LDO3
SOFT DISCHARGE
*In addition to being used for regulation, VOUT2 will also provide power for PVCC when it is programmed to 5V.
8
FN6666.5
April 7, 2011
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