ISL6722A INTERSIL [Intersil Corporation], ISL6722A Datasheet - Page 3

• Manufacturer Part Number: ISL6722A
• Description: Flexible Single Ended Current Mode PWM
• Manufacturer: INTERSIL [Intersil Corporation]

Functional Block Diagram (ISL6723A)
SLOPE
ISENSE
COMP
LGND
SYNC
RTCT
ISET
VCC
VFB
4V
2V
VREF
20k
30k
5k
SS
VREF
2.5V
+
-
VREF
1mA
3.0V/
1.5V
ON
SS CLAMP
BG
53µA
0.8
0.1
COMPARATOR
+ -
OSCILLATOR
100
12k
AMPLIFIER
UV COMPARATOR
+
-
ERROR
+
-
START/STOP
+
+
S
-
+
+
-
-
+
100mV
3
4.5k
RESTART
ENABLE
DELAY
ON
-
+
OVERCURRENT
COMPARATOR
VREF
OC DETECT
COMPARATOR
1/3
1%
5V
OSC IN
CLK OUT
NO EXT SYNC
EXT SYNC BLANKING
SYNC IN
SYNCHRONIZATION
PWM
BI-DIRECTIONAL
VREF
+
-
ISL6722A, ISL6723A
BLANKING
SYNC OUT
100nS
VOLTAGE CLAMP
SS CHARGE
START
SS CHARGED
S
R
Q
Q
SHTDN
UV COMPARATOR
VREF
4.65V
SET DOMINANT
OVERCURRENT
+
-
SHUTDOWN
FAULT
LATCH
S
R
OC
COMPARATOR
DELAY
BLANKING
Q
Q
BG
SS LOW
FAULT
+
-
OC
COMPARATOR
SS LOW
3.0V
+
-
VREF
+
-
4.375V
SS DCHG
SS CHG
270mV
36k
25µA
SOFT-START
CURRENT
CHARGE
ON
+
+
-
-
2.50V
1.45V
70µA
ON
July 11, 2007
FN9237.1
15µA
VREF
SS
OV
UV
VC
GATE
PGND