ACT4070 查看數據表（PDF） - Unspecified

零件编号

产品描述 (功能)

比赛名单

ACT4070

Wide Input 3A Step Down Converter

Unspecified 

Figure 3:

ACT4070 2.5V/3A Output Application

ACT4070

4.5V to 30V

VIN

ENABLE

BS

IN

IC1 SW

ACT4070

EN

FB

G

COMP

+

C1

10µF/35V

C2

(CCOMP)

3.3nF

R3

(RCOMP)

5.6k

C3

10nF

R2

C5

13k

(CCOMP2)

220pF

L1 10µH/4A 2.5V/3A

VOUT

R1 14k

D1

40V

C4 (COUT)

3A

22µF/10V

ceramic or

47µH/6.3 SP

Cap

: 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.

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