CP34063
1.5A,Step-Up/Down/Inverting Switching Regulators
170 µH
L
8
7
1
2
180
S
R
Q
Q2
Q1
1N5819
I
pk
C
R
sc
0.22
T
Osc
3
6
5
V
in
12 V
V
CC
C
T
+
100
1.25 V
Ref
Reg
+
-
Comp.
1500
pF
4
1.0 µH
R2
47 k
V
out
28 V/175 mA
V
out
+
+
R1 2.2 k
100
330
C
O
Optional Filter
Test
Conditions
= 8.0 V to 16 V, I = 175 mA
Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
V
in
V
in
V
in
V
in
V
in
30 mV = ±0.05%
10 mV = ±0.017%
400 mVpp
O
= 12 V, I = 75 mA to 175 mA
O
= 12 V, I = 175 mA
O
= 12 V, I = 175 mA
87.7%
O
Output Ripple With Optional Filter
= 12 V, I = 175 mA
40 mVpp
O
Figure 8. Step–Up Converter
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 1.1 Jul.18,2003
Page 5 of 10
Fax:886-3-3521052
CERAMATE [ CERAMATE TECHNICAL ]
