ISL9440BIRZ-T Intersil, ISL9440BIRZ-T Datasheet - Page 13

• 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 20. PWM1 OUTPUT RIPPLE UNDER MAX LOAD
FIGURE 22. PWM2 OUTPUT RIPPLE UNDER MAX LOAD
FIGURE 18. PGOOD RISING TO RST RISING
(V
BANDWIDTH)
(V
BANDWIDTH)
IN
IN
= 23V, I
= 23V, I
V
OUT1
V
O1
O1
OUT2
(AC), 50mV/DIV
= I
= I
(AC), 50mV/DIV
13
O2
O2
= 15A, I
= 15A, I
O3
O3
V
OUT1
(Continued)
= 12A, FULL
= 12A, FULL
PGOOD, 5.0V/DIV
RST, 5.0V/DIV
, 2.0V/DIV
2.0
2.0
2.0µs/DIV
µs
µs
/DIV
ISL9440B, ISL9440C
/DIV
IN
FIGURE 19. V
FIGURE 21. PWM1 LOAD TRANSIENT RESPONSE
FIGURE 23. PWM2 LOAD TRANSIENT RESPONSE
= 19V Unless Otherwise Noted).
0.5ms/DIV
(LOAD STEP FROM 3.75A TO 11.25A)
(LOAD STEP FROM 3.75A TO 11.25A)
IN
V
V
FALLING TO PGOOD FALLING DELAY TIME
OUT1
OUT2
I
I
STEP
STEP
(AC), 100mV/DIV
(AC), 100mV/DIV
V
, 5.0A/DIV
, 5.0A/DIV
PGOOD, 5.0V/DIV
RST, 5.0V/DIV
IN
V
, 2.0V/DIV
OUT1
, 2.0V/DIV
50
50
µs
µs
/DIV
June 24, 2010
/DIV
FN6799.3