ISL6440IAZ Intersil, ISL6440IAZ Datasheet - Page 3

• Manufacturer Part Number: ISL6440IAZ
• Description: IC CTRLR PWM DUAL 300MHZ 24QSOP
• Manufacturer: Intersil

Specifications of ISL6440IAZ

• Pwm Type: Current Mode
• Number Of Outputs: 2
• Frequency - Max: 340kHz
• Duty Cycle: 93%
• Voltage - Supply: 4.5 V ~ 24 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-QSOP
• Frequency-max: 340kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block Diagram
SS1
BOOT1
UGATE1
PHASE1
VCC_5V
LGATE1
PGND
FB1
ISEN1
OCSET1
FB3
+ 0.8V
REF
CURRENT
SAMPLE
180kΩ
+
1400kΩ
+
-
ADAPTIVE DEAD-TIME
0.8V REFERENCE
V/I SAMPLE TIMING
DIODE EMULATION
-
+
18.5pF
ERROR AMP 1
CURRENT
SAMPLE
16kΩ
-
+
-
+
OVERCURRENT FAULT
REQUIRED TO LATCH
PGOOD
SAME STATE FOR
2 CLOCK CYCLES
PGOOD
UV
PWM1
OC1
SD1
PWM CHANNEL PHASE CONTROL
DUTY CYCLE RAMP GENERATOR
VIN
OC1
BIAS SUPPLIES
FAULT LATCH
REFERENCE
SOFT-START
VIN
ENABLE
POR
SGND
OC2
VCC
OVERCURRENT FAULT
REQUIRED TO LATCH
SD2
SAME STATE FOR
2 CLOCK CYCLES
OC2
PWM2
PGOOD
VCC
UV
-
+
-
+
16kΩ
CURRENT
SAMPLE
ERROR AMP 2
ADAPTIVE DEAD-TIME
DIODE EMULATION
V/I SAMPLE TIMING
0.8V REFERENCE
18.5pF
+
-
1400kΩ
-
+
+
PGND
180kΩ
CURRENT
SAMPLE
+
0.8V
REF
UGATE2
PHASE2
OCSET2
LGATE2
BOOT2
VSEN2
SOFT2
ISEN2
VCC