M62255FP Datasheet, PDF (1/13 Pages) Mitsubishi Electric Semiconductor – GENERAL PURPOSE BATTERY CHARGER CONTROL IC

M62255FP
General Purpose Battery Charger Control IC
REJ03F0245-0200
Rev.2.00
Sep 14, 2007
Description
The M62255FP is intended to be used a general purpose battery charger control for Note PC. The M62255FP contains
the functions which are required for the battery charge control, on single chip using low peripheral component
requirement. The M62255FP can handle battery charge control, monitor battery temperature and prevent from over
current and voltage with microcomputer. It contains DC-DC converter circuit which can be used for the feedback
control of the charge current and the output voltage.
It is the best fit for Smart Battery Charger.
Features
• Built-in 3 wire serial data interface for MCU.
• Built-in multiplexer and level magnification circuit with 4 input ports.
• Built-in DC-DC converter circuit for PWM function
• Built-in two current detection circuits. These circuits can detect charge current and discharge current.
• ON/OFF control with low power dissipation mode. (Power save)
Application
Note.P.C, Video camera and general battery charger for other digital equipment
Block Diagram
SW
V_C
I_DET I_SENSE2+ I_SENSE2− DCDOUT
V_CC
ADJ
REF IN
OSC
P_GND
GND
Output
drive circuit
PWM
Comp
Current
control
OP Amp
Discharge current
detect circuit
Charge current
detect circuit
Vref
OSC
To internal circuit
Power
save
Output voltage
detect circuit
Voltage
control
OP Amp
Vref
3-bit
8-bit
D/A
converter
Logic circuit
Vref
4-bit
Multiplexer
&
Level
magnification
circuit
I_SENSE1+
I_SENSE1−
V_DET
IN1
IN2
IN3
IN4
PS
CK DI CS
D_OUT
REJ03F0245-0200 Rev.2.00 Sep 14, 2007
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