ISL8025 데이터 시트보기 (PDF) - Intersil

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ISL8025

Compact Synchronous Buck Regulators

Intersil 

ISL8025, ISL8025A

Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 5V, EN = VIN,

SYNC = VIN, L = 1.0µH, C1 = 22µF, C2 = 2 x 22µF, IOUT = 0A to 5A).

PHASE 5V/DIV

PHASE 5V/DIV

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 19. START-UP AT NO LOAD (PFM)

PHASE 5V/DIV

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 20. START-UP AT NO LOAD (PWM)

PHASE 5V/DIV

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 21. SHUTDOWN AT NO LOAD (PFM)

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 22. SHUTDOWN AT NO LOAD (PWM)

PHASE 5V/DIV

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 23. START-UP AT 5A LOAD (PWM)

11

PHASE 5V/DIV

VOUT 1V/DIV

VEN 5V/DIV

PG 5V/DIV

500µs/DIV

FIGURE 24. SHUTDOWN AT 5A LOAD (PWM)

FN8357.0

February 20, 2013

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