1 2 3 4 5 6 
A 
B 
C 
D 
654321 
D 
C 
B 
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Title 
Number RevisionSize 
C 
Date: 29-Nov-2005 Sheet of 
File: D:\ \ \display.Ddb科迅充电器原理图Drawn By: 
F1 
1A/250V 
L1 
1mH-1/2W(0410) 色环电感
C1 
4.7uF/400V 105 DXL≤8X12mm℃
BD1 
DB107 
R1 
560K±1% 1/4W M.F.
R2 
270K±5% 1206 
R3 
270K±5% 1206 
R4 
*Ω±5% 0603 
C3 
222/1KV C.C. 
D3DL4148 SMD 
D1 FR107 DO-41 
D2 
DL4148 SMD 
Q1 
2N60 TO-251 
Q2 
3904 SOT-23 
C5 
103/50V±10% X7R 0603 
C6 
10uF/50V105 DXL≤5X8mm℃
R5 
*Ω±1% 1206 
R6 
750Ω±5% 1/4W C.F. 
TF1 
N3 
N2 
D4 
SS14 (1A/40V) SMA 
C8 
470uF/16V 105 DXL≤8X12.5mm℃
C7 
Y2-222/250V 
C10104/50V ±10% 0603 
C9 
104/50V±10% 0603 
R10 
100Ω±5% 1206 
R14 
270K±1% 0603 
R11 
5.6K±1% 0603 SMD 
R16 
2.2Ω±1% 1206 
R12 
4.7K±1% 0603 
R13 100K±1% 0603 
Q4G16 SOT-23 
Q5 
SS8550D TO-92 
R7 
100Ω±5% 0603 
R8 
510Ω±5% 0603 R17 
2.4Ω±1% 1206 
Q3 
3904 SOT -23 
U1 
NEC2501 CTR TYP 300% DIP4 
C4 
103/50V ±10% 
L2 
8.2uH-0.25W ( 0307) 色环电感
C12 
220uF/10V 105 DXL≤6X7mm℃
R15 
100Ω±5% 0603 
R9 
470Ω±5% 0603 
C11 
104/50V ±10% 0603 
ZD2 
5.6V±5% 1/2WDO-35 
5.3-5.75V输出空载电压：
:LOAD=450mA 4.2VDC LOAD=600mA 4.0V输出电压＞＜
: 180mV纹波电压小于
:3000V 50Hz 10mA 1min抗电强度
: 2.5-1V , 20mA.短路保护电压低于以下起保护电流小于
N1 
4 
3 
5 
8 
1 
2 
C2 
4.7uF/400V 105 DXL≤8X12mm℃
L 
N 
ZD1 
*V±5% 1/2W DO-35 
X7R 0603 
U2 
TL4 3 1 TYPE 2 .5 V±0 .5 % 
100-240VAC 50/60Z 
90-264VAC 47-63Hz)（
TO-92 
+ 
-
C13 
104/50V ±10% 0603 SMD 
R1 
560K±1% 1/4W M.F. 
R* 
* 
:LOAD=3VDC 400-700mA输出电压负载电流
V1 
7D471K 
电流检测端
GND 
7805 
N4 
D5* C8 
22uF/25V 105℃
5VPOWER 
C13 
1UF/10V 
VDD 
R? 
100K 
C? 
104 
R? 
10K 
C? 
103 
PA31 
PA22 
PA13 
PA04 
PD0/PWM5 
VREF6 
VSS7 
PB0/AN08 
PB1/AN19 
PB2/AN210 PB3/AN3 11 
PB4/AN4 12 
/RES 13 
VDD 14 
OSC1 15 
OSC2 16 
PA7 17 
PA6 18 
PA5 19 
PA4 20 
U? 
46R52 
C? 
470p 
R? 
10k 
VDD 
VDD 
电流检测端
VDD 
lcd 
R? 
180 
R? 
180 
D? 
LED 
D? 
LED 
VDD 
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