ISL6440IAZ-T Intersil, ISL6440IAZ-T Datasheet - Page 6

• Manufacturer Part Number: ISL6440IAZ-T
• Description: IC PWM BUCK CM 24QSOP
• Manufacturer: Intersil

Specifications of ISL6440IAZ-T

• 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
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL6440IAZ-TTR

Typical Performance Curves
(Oscilloscope Plots Are Taken Using the ISL6440EVAL1B Evaluation Board, VIN = 12V, Unless Otherwise Noted)
FIGURE 3. REFERENCE VOLTAGE VARIATION OVER
I
V
PHASE1 10V/DIV
L1
OUT1
0.5A/DIV, AC COUPLED
3.39
3.38
3.37
3.36
3.35
3.33
3.32
3.31
0.85
0.84
0.83
0.82
0.81
0.79
0.78
0.77
0.75
3.34
0.76
3.4
3.3
20mV/DIV, AC COUPLED
0.8
-40
FIGURE 1. PWM1 LOAD REGULATION
0
TEMPERATURE
FIGURE 5. PWM1 WAVEFORMS
0.5
-20
1
LOAD CURRENT (A)
TEMPERATURE (°C)
1.5
0
6
2
20
2.5
40
3
3.5
60
4
80
4.5
ISL6440
I
PGOOD 5V/DIV
V
V
V
V
L2
PHASE2 10V/DIV
OUT3
OUT1
OUT2
OUT2
FIGURE 4. SOFT-START WAVEFORMS WITH PGOOD
0.5A/DIV, AC COUPLED
3.39
3.38
3.37
3.36
3.35
3.34
3.33
3.32
3.31
2V/DIV
2V/DIV
2V/DIV
3.4
3.3
20mV/DIV, AC COUPLED
FIGURE 2. PWM2 LOAD REGULATION
0
FIGURE 6. PWM2 WAVEFORMS
0.5
1
LOAD CURRENT (A)
1.5
2
2.5
3
3.5
October 4, 2005
4
FN9040.2
4.5