ISL9440AIRZ Intersil, ISL9440AIRZ Datasheet - Page 12

• Manufacturer Part Number: ISL9440AIRZ
• Description: IC CTRLR PWM OUT-OF-PHASE 32-QFN
• Manufacturer: Intersil

Specifications of ISL9440AIRZ

• Pwm Type: Current Mode
• Number Of Outputs: 4
• Frequency - Max: 678kHz
• Duty Cycle: 86%
• 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: 678kHz
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Performance Curves
(Oscilloscope Plots are Taken Using the ISL9440EVAL1Z Evaluation Board, VIN = 12V Unless Otherwise Noted.)
CH3
CH4
CH1
FIGURE 14. THREE CHANNEL HARD-SHORT OCP AT THE
V
V
V
5ms/DIV
o2
500ns/DIV
o1
o3
, 1V/DIV
, 1V/DIV
, 1V/DIV
FIGURE 12. PGOOD RISING TO RST RISING
SAME TIME
12
PGOOD, 5V/DIV, CH4
RST, 1V/DIV, CH3
VIN, 1V/DIV, CH1
(Continued)
ISL9440, ISL9440A, ISL9441
FIGURE 13. OUTPUT RIPPLE UNDER TRANSIENT LOAD
FIGURE 15. PHASE NODE PWM WAVEFORMS, V
500µs/DIV
1µs/DIV
PWM2, 5V/DIV
V
OUT4
V
V
(LDO), 100mV/DIV, 0A to 0.5A, 1A/µs
OUT1
OUT2
V
OUT3
, 100mV/DIV, 0A to 6A, 1.6A/µs
, 100mV/DIV, 0A to 6A, 1.6A/µs
, 100mV/DIV, 0A to 2A, 1A/µs
PWM3, 5V/DIV
PWM1, 5V/DIV
December 5, 2007
IN
= 24V
FN6383.1