ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 16

• 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 of ISL9440C
(Oscilloscope Plots are Taken Using the ISL9440CEVAL1Z Evaluation Board, V
FIGURE 36. PWM1 EFFICIENCY vs LOAD (V
FIGURE 38. PWM3 EFFICIENCY vs LOAD (V
100
95
90
85
80
75
70
65
60
55
50
90
85
80
75
70
65
60
55
50
45
40
0
0
V
V
IN
IN
= 9VDC
= 9VDC
FOR UPPER MOSFET AND LOWER MOSFET)
FOR UPPER MOSFET AND LOWER MOSFET)
1
1
V
IN
V
= 16VDC
2
IN
= 16VDC
LOAD CURRENT (A)
2
LOAD CURRENT (A)
3
V
16
IN
V
IN
= 12VDC
4
3
= 12VDC
FIGURE 40. SWITCHING FREQUENCY vs TEMPERATURE
5
720
680
640
600
560
520
480
440
400
4
-50
O
O
6
= 1.0V, IRF7907
= 5.0V, IRF7907
V
5
IN
ISL9440B, ISL9440C
7
= 12.0V/0A LOAD
8
6
0
TEMPERATURE (°C)
V
IN
FIGURE 37. PWM2 EFFICIENCY vs LOAD (V
IN
= 12V Unless Otherwise Noted).
660
630
600
570
540
100
= 19.0V/0A LOAD
95
90
85
80
75
70
65
60
55
50
50
5
0
FIGURE 39. SWITCHING FREQUENCY vs V
V
IN
FOR UPPER MOSFET AND LOWER MOSFET)
= 9VDC
1
V
IN
10
= 16VDC
2
100
LOAD CURRENT (A)
3
V
V
IN
IN
15
(V)
= 12VDC
4
5
O
20
= 3.3V, IRF7907
6
IN
June 24, 2010
7
FN6799.3
25
8