ISL6442IA Intersil, ISL6442IA Datasheet - Page 2

• Manufacturer Part Number: ISL6442IA
• Description: IC PWM BUCK VM 24QSOP
• Manufacturer: Intersil

Specifications of ISL6442IA

• Pwm Type: Voltage Mode
• Number Of Outputs: 3
• Frequency - Max: 2.85MHz
• Duty Cycle: 100%
• 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: 2.85MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Block Diagram
SS1/EN1
SS2/EN2
PGOOD
COMP1
COMP2
FB1
FB2
RT
VCC5
30µA
0.6V
0.6V
30µA
BIAS CURRENT
REFERENCE
100µA
VCC5
0.6V
30µA
SGND
2
PG1
PG2
PG3
SS1
1V DET
SS2
SS1
STARTUP
SS2
FAULT1
FAULT2
OVP1
UVP1
OVP2
UVP2
AND CONTROL
PG1
EN1
PG2
EN2
EN1
EN2
POWER ON
RESET
VCC
FIGURE 1. BLOCK DIAGRAM
VCC
ISL6442
REGULATOR
5V LINEAR
GENERATOR
CLOCK AND
SAWTOOTH
RAMP1
0°
RAMP2
180°
PWM2
VIN
PWM1
PGND
GATE CONTROL
GATE CONTROL
OVERCURRENT
UVP1
OVP1
PG1
EN1
OVERCURRENT
UVP2
OVP2
PG2
EN2
DEAD-TIME
DEAD-TIME
OUTPUT1
CONTROL
OUTPUT2
CONTROL
DRIVERS
DRIVERS
VCC
VCC
PG3 LCFB
LOGIC
LOGIC
110µA
FAULT3
110µA
VCC
VCC
PGND
0.6V
PGND
October 31, 2008
FN9204.2
OCSET1
BOOT1
UGATE1
PHASE1
LGATE1
OCSET2
BOOT2
UGATE2
PHASE2
LGATE2
LCFB
LCDR