ISL8088 View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

ISL8088

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

ILIL00.5.A5/AD/IVDIV

PG 5V/DIV

FIGURE 25. SOFT-START AT NO LOAD CHANNEL 1

(PFM)

IL2 0.5A/DIV

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

FN6858.1

April 29, 2010

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