ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 11

• 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
5.25
5.00
4.75
4.50
4.25
4.00
12.10
12.08
12.06
12.04
12.02
12.00
11.98
11.96
11.94
11.92
11.90
2.0
1.7
1.4
1.1
0.8
0.5
FIGURE 10. SOFT-START CURRENT vs VEN/SS
0
0
0
FIGURE 6. PWM3 LOAD REGULATION
V
IN
FIGURE 8. VCC_5V vs SUPPLY
= 5.0V
V
10
IN
V
IN
= 23V
V
1
4
IN
V
= 4.5V
LOAD CURRENT (A)
IN
= 24V
V
LOAD CURRENT (A)
= 12V
IN
20
= 15V
11
VEN/SS (V)
8
2
V
IN
30
= 19V
(Continued)
V
IN
12
3
= 5.5V
40
ISL9440B, ISL9440C
16
50
4
IN
FIGURE 7. PWM3 EFFICIENCY vs LOAD (V
FIGURE 9. OPERATING CURRENT vs V
FIGURE 11. NORMALIZED OUTPUT VOLTAGE vs VEN/SS
= 19V Unless Otherwise Noted).
100
95
90
85
80
75
70
65
60
110
100
5.0
4.5
4.0
3.5
3.0
90
80
70
60
50
40
30
20
10
0
0
4
1.00
V
IN
RJK0304DPB FOR UPPER MOSFET AND
RJK0301DPB FOR LOWER MOSFET
(RPG = RRST = 100kΩ, R
= 23VDC
2
7
1.25
V
IN
= 16VDC
V
10
4
IN
1.50
= 15V
LOAD CURRENT (A)
INPUT VOLTAGE (V)
V
V
IN
IN
VEN/SS (V)
= 19VDC
13
6
= 12V
1.75
16
8
OCSET
V
IN
IN
= 24V
2.00
19
= 121kΩ)
O
10
= 12V),
2.25
22
June 24, 2010
12
FN6799.3
2.50
25
14