ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 15

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

Specifications of ISL9440BIRZ-T

• 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

Typical Performance Curves
(Oscilloscope Plots are Taken Using the ISL9440BEVAL1Z Evaluation Board, V
FIGURE 32. SWITCHING FREQUENCY vs TEMPERATURE
FIGURE 34. SHUTDOWN CURRENT vs TEMPERATURE
360
340
320
300
280
260
240
220
200
80
78
76
74
72
70
68
66
64
62
60
330
315
300
285
270
-50
-50
FIGURE 30. SWITCHING FREQUENCY vs V
5
V
IN
= 12V
V
IN
10
V
= 19V/0A LOAD
TEMPERATURE (°C)
IN
0
= 12V/0A LOAD
TEMPERATURE (°C)
0
15
V
IN
15
(V)
50
50
(Continued)
20
IN
ISL9440B, ISL9440C
100
100
25
IN
FIGURE 31. SOFT-START CURRENT vs TEMPERATURE
= 19V Unless Otherwise Noted).
FIGURE 35. REFERENCE VOLTAGE vs TEMPERATURE
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
808
804
800
796
792
-50
-50
-50
FIGURE 33. VCC_5V vs TEMPERATURE
V
V
IN
SS
-25
V
= 12.0V/0A LOAD
= 0V, V
SS
V
IN
= 2V, V
= 19.0V/0A LOAD
IN
0
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
TEMPERATURE (°C)
= 12V
IN
= 12V
25
V
SS
50
50
50
= 1.3V, V
IN
75
= 12V
June 24, 2010
FN6799.3
100
100
100