ISL9440BIRZ Intersil, ISL9440BIRZ Datasheet - Page 3

• Manufacturer Part Number: ISL9440BIRZ
• Description: IC CTRLR PWM OUT-OF-PHASE 32-QFN
• Manufacturer: Intersil

Specifications of ISL9440BIRZ

• Pwm Type: Current Mode
• Number Of Outputs: 4
• 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: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Frequency-max: 340kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block Diagram
UGATE1
PHASE1
OCSET1
LGATE1
BOOT1
LDOFB
EN/SS1
ISEN1
FB1
G4
VCC_5V
+ 0.8V
1.3V REF
REF
CURRENT
SAMPLE
180kΩ
PGND
+
1.75V REFERENCE
g
1400kΩ
m
_
+
*V
ADAPTIVE DEAD-TIME
E
1.55µA
V/I SAMPLE TIMING
-
+
CHANNEL 1
18.5pF
V
ERROR AMP 1
+
-
E
CURRENT
VCC_5V
0.8V REFERENCE
SAMPLE
EN/SS1
16kΩ
+
-
+
-
+
PGOOD
PWM1
OVERCURRENT FAULT
RST
REQUIRED TO LATCH
OC1
SAME STATE FOR
2 CLOCK CYCLES
OCP
VCC_5V
PWM CHANNEL PHASE CONTROL
DUTY CYCLE RAMP GENERATOR
EARLY WARNING
BIAS SUPPLIES
FAULT LATCH
(see Note 10)
REFERENCE
SOFT-START
ENABLE
POR
VIN PGND
VIN
OV
SGND
VCC_5V
UV
EN/SS1
EN/SS2
EN/SS3
PGOOD
VIN
UV
PWM2
PWM3
OC3
OC2
ADAPTIVE DEAD-TIME
ADAPTIVE DEAD-TIME
VCC_5V
VCC_5V
V/I SAMPLE TIMING
V/I SAMPLE TIMING
CHANNEL 3
CHANNEL 2
PGND
PGND
VCC_5V
UGATE2
PHASE2
UGATE3
PHASE3
OCSET3
OCSET2
LGATE2
VCC_5V
LGATE3
EN/SS3
EN/SS2
BOOT2
BOOT3
ISEN3
ISEN2
FB3
FB2