ACT4060A
Figure 4:
ACT4060A 3.3V/2A Output Application
Rev 1, 25-Jun-09
V
IN
Up to 24V
BS
IN
C3
L1
ENABLE
EN
G
IC1
ACT4060A
SW
R1
V
OUT
FB
COMP
+
C1
C2
R2
D1
C4
R3
: 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
capacitance characteristics in both operating temperature and frequency compared to ceramic, polymer, and low ESR tantalum
capacitors.
Table 3:
ACT4060A Bill of Materials (Apply for 3.3V Output Application)
ITEM
1
IC, ACT4060A
15µH ± 20%, I
SAT
= 2.7A, I
DC
= 2.4A@
ΔT
= 40°C
2
15µH ± 10%, I
SAT
= 2.88A, I
DC
= 2.47A@
ΔT
= 40°C
10µH ± 20%, I
SAT
= 3.4A, I
DC
= 2.5A@ΔT = 40°C
10µH ± 10%, I
SAT
= 2.95A, I
DC
= 2.3A@
ΔT
= 40°C
3
4
5
6
7
8
9
10
Schottky Diode SK34/40V, 3A, SMB
Schottky Diode B340C/40V, 3A, SMB
Ceramic cap 10µF/35V, X7R, 1210
Ceramic cap 2.2nF/6.3V, X7R, 0603
Ceramic cap 10nF/50V, X7R, 0603
Ceramic cap 22µF/10V, X7R, 1210
SP cap 47µF/6.3V, 50mΩ
Resistor, 15.5kΩ, 1/16W, 1%, 0603
Resistor, 10kΩ, 1/16W, 1%, 0603
Resistor, 12kΩ, 1/16W, 5%, 0603
FengHua, Neohm, Yageo
1
DESCRIPTION
MANUFACTURER
Active-Semi
Taiyo Yuden NR 8040T 150M
Wurth Electronik 744776115
Taiyo Yuden NR 6045T 100M
Wurth Electronik 74477510
Transys electronics
Diodes Inc
Murata, TDK,Taiyo Yuden
Murata, TDK,Taiyo Yuden
Murata, TDK,Taiyo Yuden
Murata, TDK,Taiyo Yuden
Kemet, Panasonic
QTY
1
REFERENCE
U1
1
L1
1
1
1
1
1
1
D1
C1
C2
C3
C4
R1
R2
R3
Innovative Power
TM
-8-
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