ISL8088(2009) 查看數據表（PDF） - Intersil

零件编号

产品描述 (功能)

生产厂家

ISL8088
(Rev.:2009)

Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator

Intersil 

ISL8088

Typical Operating Performance

(Unless otherwise noted) operating conditions are:

TA = +25°C, VIN = 2.75V to 5.5V, EN = VIN, L1 = L2 = 2.2µH,

C1 = 10µF, C2 = C4 = 10µF, VOUT1 = 2.5V, VOUT2 = 1.8V,

IOUT1 = IOUT2 = 0A to 800mA. (Continued)

50µs/DIV

EN1 2V/DIV

VOUT1 1V/DIV

50µs/DIV

EN2 2V/DIV

VOUT2 0.5V/DIV

IL 0.I5LA0/.D5IAV/DIV

IL2 0.5A/DIV

PG 5V/DIV

FIGURE 25. SOFT-START AT NO LOAD CHANNEL 1

(PFM)

PG 5V/DIV

FIGURE 26. SOFT-START AT NO LOAD CHANNEL 2

(PFM)

50µs/DIV

EN1 2V/DIV

VOUT1 1V/DIV

IL1 0.5A/DIV

PG 5V/DIV

FIGURE 27. SOFT-START AT FULL LOAD CHANNEL 1

50µs/DIV

EN2 2V/DIV

VOUT2 0.5V/DIV

IL2 0.5A/DIV

PG 5V/DIV

FIGURE 28. SOFT-START AT FULL LOAD CHANNEL 2

1ms/DIV

EN1 5V/DIV

VOUT1 1V/DIV

IL1 0.5A/DIV

EN2 5V/DIV

VOUT2 0.5V/DIV

IL2 0.5A/DIV

1ms/DIV

PG 5V/DIV

FIGURE 29. SOFT-DISCHARGE SHUTDOWN CHANNEL 1

PG 5V/DIV

FIGURE 30. SOFT-DISCHARGE SHUTDOWN CHANNEL 2

10

FN6858.0

September 21, 2009

Share Link: