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ACT4303 Datasheet(PDF) 12 Page - Active-Semi, Inc

Part # ACT4303
Description  30V/3A Sensorless CC/CV Step-Down DC/DC Converter
PDF  15 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4303 Datasheet(HTML) 12 Page - Active-Semi, Inc

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ACT4303
Rev 0, 05-Dec-11
Active-Semi
Innovative Power
TM
- 12 -
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
Start up into CC mode
SW vs. Output Voltage Ripples
Start up into CC mode
VOUT = 5V
RLORD = 1.5Ω
IISET = 2A
VIN = 12V
CH1: VOUT, 2V/div
CH2: IOUT, 1A/div
TIME: 200µs/div
CH1: VOUT, 2V/div
CH2: IOUT, 1A/div
TIME: 200µs/div
VIN = 12V
VOUT = 5V
IOUT = 2.1A
CH1
CH2
CH1: VOUT Ripple, 20mV/div
CH2: SW, 5V/div
TIME: 2µs/div
VOUT = 5V
RLORD = 1.5Ω
IISET = 2A
VIN = 24V
CH1
CH2
CH1
CH2
Shutdown Current vs. Input Voltage
115
100
85
70
55
40
25
130
Input Voltage (V)
10
15
20
25
30
Standby Current vs. Input Voltage
3
2.5
2
1.5
1
0.5
0
Input Voltage (V)
2
6
10
14
18
22
26
30
Reverse Leakage Current (VIN Floating)
160
120
80
40
0
VOUT (V)
0
1
2
3
4
5
(L = 33µH, CIN = 10µF, COUT = 47µF, Ta = 25°C, RCOMP = 8.2k, CCOMP1 = 2.2nF, CCOMP2 = NC)



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