ISL6402A

FN9010 Rev 3.00

Page 9 of 18

Dec 1, 2004

FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V)

FIGURE 8. LOAD TRANSIENT RESPONSE VOUT2 (3.3V)

FIGURE 9. PWM SOFT-START WAVEFORM

FIGURE 10. OVERCURRENT HICCUP MODE OPERATION

FIGURE 11. PWM1 EFFICIENCY vs LOAD, VIN=5V, VOUT=3.3V

FIGURE 12. PWM2 EFFICIENCY vs LOAD, VIN=5V, VOUT=3.3V

Typical Performance Curves (Continued)

(Oscilloscope Plots Are Taken Using the ISL6402AEVAL4B Evaluation Board, VIN = 12V, Unless Otherwise Noted)

VOUT1 200mV/DIV

IOUT1 1A/DIV

AC COUPLED

VOUT1 200mV/DIV

AC COUPLED

IOUT1 1A/DIV

VCC_5V 1V/DIV

VOUT1 1V/DIV

VOUT1 2V/DIV

IL1 2A/DIV

SS1 2V/DIV

70

80

100

01

2.5

3.5

LOAD CURRENT (A)

0.5

1.5

2

3

4

90

70

80

100

01

2.5

3.5

LOAD CURRENT (A)

0.5

1.5

2

3

4

90