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ACT4050 Datasheet(PDF) 12 Page - Active-Semi, Inc

Part # ACT4050
Description  Wide Input 3.5A Step Down Converter
PDF  13 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4050 Datasheet(HTML) 12 Page - Active-Semi, Inc

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Active-Semi
ACT4050
Rev 2, 01-Jul-11
- 12 -
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
Innovative Power
TM
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(Circuit of Figure 5, unless otherwise specified.)
CH2
CH1
Start-up/Shutdown by VIN Pin
CH1: VEN, 2.0V/div
CH2: VOUT, 2.0V/div
TIME: 400µs/div
CH1
CH2
Start-up/Shutdown by EN Pin
CH1: VEN, 2.0V/div
CH2: VOUT, 2.0V/div
TIME: 200µs/div
CH1
CH2
Start-up/Shutdown by EN Pin
CH2
CH1
Start-up/Shutdown by VIN Pin
VIN = 12V
VOUT = 5V
ILOAD = 1A
CH1: VIN, 5.0V/div
CH2: VOUT, 2V/div
TIME: 100µs/div
CH1: VIN, 5.0V/div
CH2: VOUT, 2V/div
TIME: 100µs/div
VIN = 12V
VOUT = 5V
No Load
CH1
CH2
Switching Waveform
CH1: VOUT, 20mV/div (AC COUPLED)
CH2: VSW, 5.0V/div
TIME: 1µs/div
VIN = 12V
VOUT = 5V
1Ω Load
CH1
CH2
Switching Waveform
CH1: VOUT, 20mV/div (AC COUPLED)
CH2: VSW, 5.0V/div
TIME: 1µs/div
VIN = 12V
VOUT = 3.3V
ILOAD = 1A
VIN = 12V
VOUT = 5V
ILOAD = 1A
VIN = 12V
VOUT = 5V
No Load
VIN = 12V
VOUT = 5V
2Ω Load



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