ACT4088 datasheet(9/11 Pages) ACTIVE-SEMI

Part #	ACT4088

Description	28V, 1.5A, 1.4MHz Step-Down DC/DC Converter in SOT23-6

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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9 / 11 page

ACT4088

Rev PrA, 24-Jul-07

Innovative Products. Active Solutions.

- 9 -

www.active-semi.com

CH1: ILOAD, 500mA/div

CH2: VOUT, 100mV/div (AC Coupled)

TIME: 200µs/div

CH1

CH2

Circuit of Figure 3

ILOAD = 150mA to 850mA

CH1: VSW, 10V/div

CH2: VOUT, 20mV/div (AC Coupled)

TIME: 400ns/div

Circuit of Figure 3

ILOAD = 1A

Figure 3:

ACT4088 Optimized for Minimal External Components

The ACT4088 with provides excellent AC and DC results across a wide range of external component combinations. The circuit of

Figure 3 can be used to generate a 5V output from a 12V input utilizing a smaller (i.e. lower-cost) output capacitor while maintaining

good performance.

CH1

CH2

Figure 4:

Circuit of Figure 3 (ILOAD = 150mA to 850mA)

Figure 5:

Circuit of Figure 3 (ILOAD = 1A)

ACT4088 Datasheet(PDF) 9 Page - Active-Semi, Inc