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ACT4072 Datasheet(PDF) 7 Page - Active-Semi, Inc

Part # ACT4072
Description  Wide Input 2A Step Down Converter
PDF  10 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4072 Datasheet(HTML) 7 Page - Active-Semi, Inc

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ACT4072
Rev2, 27-May-08
Active-Semi
Innovative Power
TM
- 7 -
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
Figure 3:
ACT4072 5V/2A Output Application
: D1 is a 40V, 3A Schottky diode with low forward voltage, an IR 30BQ040 or SK34 equivalent. C4 can be either a ceramic capacitor
(Panasonic ECJ-3YB1C226M) or SP-CAP (Specialty Polymer) Aluminum Electrolytic Capacitor such as Panasonic EEFCD0J470XR.
The SP-Cap is based on aluminum electrolytic capacitor technology, but uses a solid polymer electrolyte and has very stable capaci-
tance characteristics in both operating temperature and frequency compared to ceramic, polymer, and low ESR tantalum capacitors.
IC1
ACT4072
BS
IN
EN
COMP
FB
SW
G
VIN
ENABLE
Up to 30V
+
C1
10µF/35V
C2
1.5nF
R3
15k
C5
100pF
R2
12.1k
D1
L1 22µH/3A
C3
10nF
R1 39.2k
VOUT
C4
22µF/10V
ceramic or
47µH/6.3 SP
Cap
5V/2A



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