ISL6235 Datasheet, PDF (2/14 Pages) Intersil Corporation – Advanced Triple PWM Only Mode and Dual Linear Power Controller for Portable Applications

Block Diagram
VSEN3
GATE3
VBATT
CLK1
BOOST
CONTROLLER
BOOT2
UGATE2
PHASE2
REF
HGDR2
RAMP 2
CLK2
CLK
200ns
RAMP 1
CLK1
GATE LOGIC 2
HI
SHUTOFF
GND
UVFLT
POWER-ON
RESET (POR)
POR
GATE LOGIC 1
HI
SHUTOFF
DEADTIME
PWM ON
LO
HGDR1
BOOT1
UGATE1
PHASE1
VCC
LGDR1
OVP1
LGATE1
PGND1
VSEN1
LGATE2
PGND2
VSEN2
VCC
LGDR2
OVP2
DEADTIME
PWM ON
LO
EA2
-
OC COMP2
-
2.8V
OC
LOGIC2
REF
ISEN2
R1 = 20K
-
LGATE2
LGATE2
VOLT-
SECOND
CLAMP
∑
UVFLT
OVP1
OVP2
VCC ^PWM
LATCH 2
DQ
R
>Q
-
OUTPUT
VOLTAGE
MONITOR
PWM _VCC
LATCH 1
QD
R
Q<
-
OC COMP1
OC LOGIC1
-
VOLT-
∑
SECOND
CLAMP
VBATT
VSEN1
EA1
-
REF
R1 = 20K
-
ISEN1
LGATE1
LGATE1
SDWN
LDO1
LDO2
PGOOD
3.3V-ALWAYS
VCC
POR
REFERENCE
SDWN
AND
SOFT START
SDWN1
SDWN2
REF _2.5V
SDWNALL
5V-ALWAYS