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ISL78235R5668 Datasheet, PDF (11/20 Pages) Intersil Corporation – Automotive 5A Synchronous Buck Regulator
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ISL78235R5668
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VIN = VDD = 3V,
VOUT = 1.0V, EN = VDD, SYNC = VDD, L = 0.33µH, fSW = 2MHz, CIN = 4 x 22µF, COUT = 4 x 47µF, IOUT = 0A to 8A. (Continued)
IOUT 5A/DIV
IOUT 5A/DIV
VOUT 1V/DIV
EN 2V/DIV
PG 2V/DIV
SS = GND
500µs/DIV
FIGURE 22. EN START-UP AT 8A LOAD
VOUT 1V/DIV
VIN 2V/DIV
PG 2V/DIV
SS = GND
1ms/DIV
FIGURE 23. VIN START-UP AT 8A LOAD
IOUT 5A/DIV
VOUT 1V/DIV
EN 2V/DIV
PG 2V/DIV
SS = GND
200µs/DIV
FIGURE 24. EN SHUTDOWN AT 8A LOAD
IOUT 5A/DIV
VOUT 1V/DIV
EN 2V/DIV
PG 2V/DIV
SS = GND
200µs/DIV
FIGURE 25. VIN SHUTDOWN AT 8A LOAD
PHASE 1V/DIV
PHASE 1V/DIV
5ns/DIV
FIGURE 26. JITTER AT 8A LOAD; VIN = 3V
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5ns/DIV
FIGURE 27. JITTER AT 8A LOAD; VIN = 5V
FN8769.1
January 21, 2016
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