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ISL8033 View Datasheet(PDF) - Intersil

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ISL8033 Datasheet PDF : 18 Pages
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ISL8033, ISL8033A
Typical Operating Performance ISL8033
Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 5V, EN = VIN, L1 = L2 = 1.5µH, C1 = C2 = C4 = 2x22µF, VOUT1 = 1.2V, VOUT2 = 1.8V,
IOUT1 = IOUT2 = 0A to 3A. (Continued)
EN2 2V/DIV
VOUT2 1V/DIV
IL2 1A/DIV
PG 2V/DIV
EN1 2V/DIV
VOUT1 0.5V/DIV
IL1 0.5A/DIV
PG 5V/DIV
FIGURE 21. SOFT-START AT FULL LOAD CHANNEL 2
FIGURE 22. SOFT-DISCHARGE SHUTDOWN CHANNEL 1
EN2 2V/DIV
LX1 2V/DIV
VOUT2 1V/DIV
IL2 0.5A/DIV
PG 5V/DIV
FIGURE 23. SOFT-DISCHARGE SHUTDOWN CHANNEL 2
SYNCH 5V/DIV
VOUT1 RIPPLE 20mV/DIV
IL1 0.2A/DIV
FIGURE 24. CHANNEL 1 STEADY STATE OPERATION AT NO LOAD
WITH FREQUENCY = 6MHz
LX2 2V/DIV
LX1 2V/DIV
SYNCH 5V/DIV
VOUT2 RIPPLE 20mV/DIV
IL2 0.2A/DIV
SYNCH 5V/DIV
VOUT1 RIPPLE 20mV/DIV
IL1 2A/DIV
FIGURE 25. CHANNEL 2 STEADY STATE OPERATION AT NO LOAD
WITH FREQUENCY = 6MHz
11
FIGURE 26. CHANNEL 1 STEADY STATE OPERATION AT FULL LOAD
WITH FREQUENCY = 6MHz
FN6854.2
March 24, 2011
 

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