M62255FP Datasheet, PDF (1/12 Pages) Mitsubishi Electric Semiconductor – GENERAL PURPOSE BATTERY CHARGER CONTROL IC

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MITSUBISHI<Dig./Ana. INTERFACE>
M62255FP
GENERAL PURPOSE BATTERY CHARGER CONTROL IC
DESCRIPTION
Notice: This is not a final specification.
Some parametric limits are subject to change.
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)
PIN CONFIGURATION (TOP VIEW)
SW ₁
PGND ₂
OSC ₃
GND ₄
PS ₅
CK ₆
DI 7
CS 8
DCDOUT 9
REF IN 10
ADJ ₁₁
Vcc ₁₂
24 ^Vc
23 ^VDET
22 ^IDET
21 ^{ISENSE1 -}
20 ^{ISENSE1 +}
19 ^IN1
18 ^IN2
17 ^IN3
16 ^IN4
15 ^DOUT
14 ^{ISENSE2 -}
13 ^{ISENSE2 +}
24P2Q-A
APPLICATION
Note.P.C, Video camera and general battery charger for other
digital equipment
BLOCK DIAGRAM
SW Vc
IDET ISENSE2 + ISENSE2 - DCDOUT
Vcc
ADJ
REF IN
OSC
PGND
GND
Output
Drive circuit
PWM
Comp
Current
control
OPAmp
Discharge Current
Detect Circuit
Charge Current
Detect Circuit
Vref
Output Voltage
Detect Circuit
OSC
To Internal Circuit
Power
Save
Voltage
control
OPAmp
Vref
3bit
8bit
D-A
Converter
Vref
Logic Circuit
4bit
Multiplexer
&
Level
Magnification
Circuit
PS
CK DI CS
DOUT
ISENSE1 +
ISENSE1 -
VDET
IN1
IN2
IN3
IN4
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