ISL6721ABZ Intersil, ISL6721ABZ Datasheet - Page 2

• Manufacturer Part Number: ISL6721ABZ
• Description: IC CTRLR PWM SGL ENDED 16-SOIC
• Manufacturer: Intersil

Specifications of ISL6721ABZ

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 100%
• Voltage - Supply: 9 V ~ 18 V
• Buck: Yes
• Boost: Yes
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 1MHz
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional Block Diagram
ISENSE
SLOPE
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
UV COMPARATOR
53µA
0.8
0.1
100k
COMPARATOR
AMPLIFIER
START/STOP
+ -
OSCILLATOR
12k
ERROR
+
-
+
-
+
+
S
-
+
+
-
-
+
100mV
2
4.5k
ENABLE
PROTECTION
RESTART
THERMAL
DELAY
ON
-
+
OVERCURRENT
COMPARATOR
VREF
OC DETECT
COMPARATOR
1/3
1%
OSC IN
CLK OUT
NO EXT SYNC
EXT SYNC BLANKING
5V
SYNC IN
SYNCHRONIZATION
BI-DIRECTIONAL
PWM
VREF
+
-
BLANKING
100ns
SYNC OUT
VOLTAGE CLAMP
SS CHARGE
RETRIGGERABLE
ISL6721
START
ONE SHOT
50µs
SS CHARGED
Q
Q
S
R
Q
Q
UV COMPARATOR
VREF
4.65V
SET DOMINANT
OVERCURRENT
SHUTDOWN
+
LATCH
FAULT
DELAY
-
S
R
COMPARATOR
BLANKING
Q
Q
BG
SS LOW
+
-
OC LATCH
COMPARATOR
S
R
SS LOW
Q
Q
3.0V
+
-
VREF
+
-
4.375V
270mV
SOFT-START
36k
CURRENT
CHARGE
25µA
ON
+
-
+
-
2.50V
1.45V
70µA
ON
March 5, 2008
15µA
FN9110.6
VREF
SS
OV
UV
VC
GATE
PGND