Product Description
This type of cell phone battery charger circuit is mainly formed by rectification / switching circuit, zener / overflow protective circuit and charging circuit, the input voltage is AC220V, 50/60Hz, output voltage is DC4.2V, output current can reach 500mA. Diodes and transistors and Zener IC of KEXIN can be applied at this circuit widely.
Cell Phone Battery Charger Circuit Diagram
![](http://www.chinakexin.com/other/DCCDQ.jpg)
KEXIN components that can be applied to
Power Rectification, Switching Circuit
PN |
Function Description |
Package |
1N4007 |
1A Rectification Diode, Vr:1000V |
DO-41/SMA |
FR107 |
1A Reverse Recovery Diode, Vr:1000V |
DO-41/SMA |
MJE13001 |
NPN Switching Transistor 400V/0.2A |
TO92 |
MJE13003 |
NPN Switching Transistor 400V/1.5A |
TO126 |
Zener/ Overflow Protective Circuit
PN |
Function Description |
Package |
1N4148 |
High Speed Switching Diode |
SOD323/DO-34 |
BZT55C5V6 |
5.6V Zener Diode |
LL34 |
2SC1815 |
NPN High Frequency Transistor |
SOT23/TO92 |
2SC945 |
NPN Small Power Amplifier Transistor |
SOT23/TO92 |
MMBT2222 |
NPN Switching Transistor |
SOT23/TO92 |
DTC144ECA |
Digital Transistor |
SOT323 |
PC817 |
Optical Coupler |
DIP04/SOP4 |
LM358 |
Dual Option Amplifier |
DIP08/SOP8 |
TL431 |
Three-Terminal Voltage Regulator |
SOT23/TO92 |
TL432 |
Three-Terminal Voltage Regulator |
SOT23 |
Charging Circuit
PN |
Function Description |
Package |
BZT55C7V5 |
7.5V Zener Diode |
LL34 |
SS14 |
1A Schottky Diode |
SMA |
SB260 |
Schottky Rectification Diode 60V/2A |
DO-15/SMB |
MMBT8550 |
PNP Transistor, Ic 0.5A/0.8A/1A/1.5A |
SOT23 |
78L05 |
Three-Terminal Voltage Output |
SOT89/TO92 |