Step-Down Converter
I L 34063A
RSC
0.33Ω
C2 +
100 µF
8
DRC
1
SWC
7
Ipk
6
Vcc
5
Cll
2
SWE
3
TC
4
GND
34063A/E
C3
470pF
BYV10-40
D1
L1
220µH
R1
1.2kΩ
R2
3.6kΩ
C1
+
470µF
Test Condition (VOUT = 5 V)
Test
Conditions
Line Regulation
Load Regulation
Output Ripple
Efficiency
ISC
VIN = 15 to 25 V, IO = 500 mA
VIN = 25 V, IO = 50 to 500 mA
VIN = 25 V, IO = 500 mA
VIN = 25 V, IO = 500 mA
VIN = 25 V, RLOAD = 0.1 Ω
Value (Typ)
Unit
5
mV
30
mV
100
mV
80
%
1.2
A
2011, February, Rev. 02