M62254FP
Standard Battery Charger Controller
REJ03F0244-0200
Rev.2.00
Jun 16, 2008
Description
The M62254FP is designed as standard battery charger controller. The M62254FP has functions which require for the
battery charge control on single chip. Not only the combination of M62254 and MCU capable of handling battery
charge control, but also it is capable of monitoring battery temperature, prevent from over current or voltage, using
minimal peripherals. It also has feedback function to the primary source of SW power supply, which can used to control
feedback of charge current and output voltage.
Features
•
•
•
•
•
•
•
Built-in reset circuit and WDT function
Built-in multiplexer and level magnification circuit with 4 input ports
Built-in two standard stand alone OP-amp
Built-in sub-switch circuit with feedback function
Built-in 3 line serial data interface function
Built-in low input/output operation 5 V voltage regulator function
Built-in charge current/output voltage control circuit
Applications
Video camera, mobile phone and general battery charger for other digital equipments
Block Diagram
V
DET
I
adj
I
DET
28 30 29
P.C 32
Voltage
control OP
V
CC
V
B
20 21
V
DD
19
LED1 LED2 LED3 MSW1MSW2
3
4
8
5
7
LED driver
circuit
Main SW
driver
SSW
9
Sub SW
driver
+
−
Voltage
regulator
Voltage
control
circuit
+
−
OP
OUT2
35
Reset
circuit
WDT
+
−
3
Amp2
+
−
1
31
GND
18
27 26 24 22 23 17
33
34
2
1
25 6
OP
IN2−
OP
IN2+
OP
IN1−
OP
IN1+
Ctd P.GND RESET TC WD CS DI CK D
OUT
REJ03F0244-0200 Rev.2.00 Jun 16, 2008
Page 1 of 11
+
−
OP
OUT1
36
Current
control OP
+
−
Serial
⇒
Parallel
conversion circuit
Current
control
circuit
9
Driver
detection
circuit
10 CD
Amp1
1
CS IN CLOCK
16 I
SENSE
12 IN1
13 IN2
14 IN3
15 IN4
11 REF
RENESAS [ RENESAS TECHNOLOGY CORP ]
