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ACT4088 Datasheet(PDF) 5 Page - Active-Semi, Inc

Part # ACT4088
Description  28V, 1.5A, 1.4MHz Step-Down DC/DC Converter in SOT23-6
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4088 Datasheet(HTML) 5 Page - Active-Semi, Inc

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ACT4088
Rev 2, 15-Nov-12
Innovative PowerTM
- 5 -
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(Circuit of Figure 2, VIN = 12V, L = 4.7µH, C1 = 10µF, C2 = 22µF, TA = +25°C, unless otherwise specified.)
CH1
CH2
Load Transient Response
CH1
CH2
Start-up Waveforms
CH1
CH2
Start-up Waveforms
CH1: VOUT, 50mV/div, (AC COUPLED)
CH2: VSW, 10V/div
CH3: IL, 500mA/div
TIME: 400ns/div
CH1
CH2
CH3
Steady State Switching Waveforms
CH1: VOUT, 100mV/div, (AC COUPLED)
CH2: IL, 1A/div
TIME: 1ms/div
CH1
CH2
Hiccup Mode Switching Waveforms
CH1
CH2
Load Transient Response
ILOAD = 200mA to 800mA
CH1: VOUT, 2V/div
CH2: VSW, 10V/div
CH3: IL, 1A/div
TIME: 200µs/div
CH1: VEN, 2V/div
CH2: VOUT, 2V/div
CH3: VSW, 10V/div
CH4: IL, 1A/div
TIME: 400µs/div
CH1: VOUT, 50mV/div
CH2: ILOAD, 500mA/div
TIME: 100µs/div
CH1: VOUT, 50mV/div
CH2: ILOAD, 500mA/div
TIME: 100µs/div
ILOAD = 200mA to 1.5A
ILOAD = 0mA
CH3
ILOAD = 1A
CH3
CH4
ILOAD = 1A


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