Active-Semi

ACT4050

Rev 2, 01-Jul-11

- 8 -

www.active-semi.com

Copyright © 2011 Active-Semi, Inc.

Innovative Power

TM

Figure 3:

ACT4050 1.8V/3.5A Output Application

: D1 is a 30V, 5A Schottky diode with low forward voltage, a B530C equivalent. C4 can be either a ceramic capacitor (Panasonic

is based on aluminum electrolytic capacitor technology, but uses a solid polymer electrolyte and has very stable capacitance

characteristics in both operating temperature and frequency compared to ceramic, polymer, and low ESR tantalum capacitors.

ITEM

DESCRIPTION

MANUFACTURER

QTY

REFERENCE

1

IC, ACT4050

Active-Semi

1

U1

2

Resistor, 12.1kΩ , 1%, SMT, 0603

FengHua, Neohm, Yageo

1

R1

3

Resistor, 10kΩ, 1%, SMT, 0603

FengHua, Neohm, Yageo

1

R2

4

Resistor, 10kΩ, 5%, SMT, 0603

FengHua, Neohm, Yageo

1

R3

5

Capacitor, Ceramic, 10µF/35V, X7R, SMT,

1206

Panasonic, Kemet, Murata,

TDK, FengHua, Taiyo Yuden

1

C1

6

Capacitor, Ceramic, 22µF/6.3V, X7R, SMT,

1206

Panasonic, Kemet, Murata,

TDK, FengHua, Taiyo Yuden

2

C4

7

Capacitor, Ceramic, 10nF/50V, X7R, SMT,

0603

Panasonic, Kemet, Murata,

TDK, FengHua, Taiyo Yuden

1

C3

8

Capacitor, Ceramic, 2.7nF/6.3V, X7R, SMT,

0603

Panasonic, Kemet, Murata,

TDK, FengHua, Taiyo Yuden

1

C2

9

Capacitor, Ceramic, 220pF/6.3V, X7R,

SMT, 0603

Panasonic, Kemet, Murata,

TDK, FengHua, Taiyo Yuden

1

C5 (OPTIONAL)

10

Schottky Diode SK53/30V, 5A, SMC

Diodes

1

D1

11

Inductor, CDRH8D43-6R8NC, 6.8µH

Sumida

1

L1

Table 3:

ACT4050EV Bill of Materials (Apply for 1.8V Output Application)