ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 10

• 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
5.00
5.05
5.04
5.03
5.02
5.01
4.99
4.98
4.97
4.96
4.95
3.36
3.35
3.34
3.33
3.32
3.31
3.30
0
0
FIGURE 4. PWM2 LOAD REGULATION
FIGURE 2. PWM1 LOAD REGULATION
V
4
4
IN
V
= 6V
IN
LOAD CURRENT (A)
LOAD CURRENT (A)
= 19V
V
IN
10
= 5V
8
8
V
IN
V
= 12V
IN
8
7
6
5
4
3
2
1
0
= 12V
0
MAX = 100µs
PGOOD
12
12
FIGURE 1. PGOOD AND RST TIMING
V
IN
ISL9440B, ISL9440C
= 19V
5
V
V
REGULATION
IN
OUT
16
16
TIME (NOT TO SCALE)
= 5.5V FALLING/
1-4 OUT OF
MAX = 6.5µs
10
V
V
V
V
IN
OUT
IN
OUT
IN
TYP = 200ms
= 5.5V RISING/
15
FIGURE 3. PWM1 EFFICIENCY vs LOAD (V
FIGURE 5. PWM2 EFFICIENCY vs LOAD (V
= 5.5V RISING/
100
MAX = 2µs
= 19V Unless Otherwise Noted).
1-4 IN REGULATION
100
95
90
85
80
75
70
65
60
1-4 IN REGULATION
95
90
85
80
75
70
65
60
0.4V
2.4V
0
V
0
IN
/V
OUT
20
V
RJK0305DPB FOR UPPER MOSFET AND
RJK0301DPB FOR LOWER MOSFET
RJK0305DPB FOR UPPER MOSFET AND
RJK0301DPB FOR LOWER MOSFET
2
2
IN
V
= 16VDC
IN
RST
= 16VDC
4
4
V
25
V
IN
IN
LOAD CURRENT (A)
= 19VDC
LOAD CURRENT (A)
= 19VDC
6
6
8
8
V
V
IN
IN
= 23VDC
10
10
= 23VDC
O
O
12
12
= 5.0V),
= 3.3V),
14
14
June 24, 2010
FN6799.3
16
16