ISL6224 Datasheet, PDF (4/13 Pages) Intersil Corporation – Single Output Mobile-Friendly PWM Controller

Functional Block Diagram
VIN
VCC
FSET
CLK
CLK
RAMP
POR
EN
SOFT
REFERENCE
AND
SOFT-START
SDWN
REF
OUTPUT
VOLTAGE
MONITOR
PGOOD
FCCM
GND
BOOT
POWER-ON
RESET (POR)
POR
FCCM
HI
SHUTOFF
HGDR1
UGATE
PHASE
GATE LOGIC
DEADT
PWM/HYST
PWM ON
HYST ON
LO
GATE
CONTROL
VCC
LGDR
OVP
HYST COMP1
-
CLK1
LGATE
PGND
PWM
LATCH 1
VCC
QD
R
Q<
-
OC LOGIC1
VOLT-
Σ
SECOND
CLAMP
PWM/HYS
LOGIC
OC COMP1
-
EA1
-
REF
VSEN
FFBK
LGATE1
+
-
MODE CHANGE COMP
R1=20K ^LGATE
ISEN
-
OCSET
V_OUT