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Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
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.
FEATURE
Built-in Reset circuit and WDT function
Built-in Multiplexer and Level magnification circuit with
4 input ports
Built-in two standard stand alone OPAmp
Built-in Sub-switch circuit with feedback function
Built-in 3 line serial data interface function
Built-in Low inputÅEoutput operation 5V voltage
regulator function
Built-in Charge current/output voltage control circuit
Pin layout(Top view)
OPIN1+ 1
OPIN1- 2
LED1 3
LED2 4
LED3 5
P.GND 6
MSW1 7
MSW2 8
SSW 9
CD 10
REF 11
IN1 12
IN2 13
IN3 14
IN4 15
ISENSE 16
DOUT 17
RESET 18
36P2R
APPLICATIONS
Video camera, Hand carry telephone and general battery
charger for other digital equipments
36 OPOUT1
35 OPOUT2
34 OPIN2+
33 OPIN2-
32 P.C
31 GND
30 Iadj
29 IDET
28 V DET
27 TC
26 WD
25 Ctd
24 CS
23 CK
22 DI
21 VB
20 Vcc
19 VDD
Block diagram
V DET Iadj IDET
28 30 29
Vcc VB VDD LED1 LED2 LED3 MSW1 MSW2
20 21 19 3 4 5
78
SSW
9
P.C 32
OPOUT1 36
OPOUT2 35
Voltage
control OP
+
-
Current
control OP
+
-
+
-
+
-
Voltage
regulator
Voltage
ccoirncturiot l
/
Current
control
circuit
/
/
LED driver
circuit
/
Main SW
driver
/
Serial Parallel
conversion circuit
/
/
CS IN CLOCK
Reset
circuit
WDT
31
GND
33 34 2 1 25 6
18 27 26 24 22 23 17
OPIN2- OPIN2+ OPIN1-OPIN1+ Ctd P.GND RESET TC WD CS DI CK DOUT
Sub SW
driver
Driver
detection
circuit
Amp1
91
+-
Amp2
+-
31
10 CD
16 ISENSE
12 IN1
13 IN2
14 IN3
15 IN4
11 REF

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Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
«Digital Data Format»
MSB
LSB
DI 8 bit Shift register
CK D7 D6 D5 D4 D3 D2 D1 D0
CS Address decoder
8
4
Latch
MPX
Current
control
SW
Latch
MPX
Voltage
control
SW
Latch
MPX
LED
drive
SW
Latch
MPX
Main
SW
Latch
MPX
Sub
SW
Latch
MPX
Input Amp
SW
Latch
MPX
A-D
input
SW
Latch
MPX
Reference
voltage
SW
«Data Setting»
Control Function
RESET
Address
Data
D7 D6 D5 D4 D3 D2 D1 D0
Description
0 0 0 0 - - - - All SW is OFF
A-D reference voltage=0.4V
Voltage setting reference voltage = 4.0V
Current control
Voltage control
0 0 0 1 - - - - See Table 1
0 0 1 0 - - - - See Table 2
LED driver select
Main SW
0 0 1 1 - - - - See Table 3
0 1 0 0 - - - - See Table 4
Sub SW
Amp.select
0 1 0 1 - - - - See Table 5
0 1 1 0 - - - - See Table 6
A-D input select
0 1 1 1 - - - - See Table 7
A-D Reference select 1 0 0 0 - - - - See Table 8

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Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
Table1: Current control data
D3 D2 D1 D0 Current control OPAmp input voltage Current Ratio
00 0 0
0V 0
00 0 1
20mV
1/16
00 1 0
40mV
1/8
00 1 1
01 0 0
80mV
160mV
1/4
1/2
01 0 1
240mV
3/4
01 1 0
320mV
1
01 1 1
– Tricle
* During trickle charge, use constant voltage mode and charge directly to the battery
using external resister
* 20mV is selected at RESET
Table2: Voltage control data
D3 D2
D1 D0
Voltage control OPAmp input voltage Voltage Ratio
0000
0001
0V
0.4V
10
1
0010
0.8V
2
0011
1.2V
3
0100
1.6V
4
0101
2.0V
5
0110
2.4V
6
0111
2.8V
7
1000
3.2V
8
1001
3.6V
9
1010
4.0V
10
1011
4.4V
11
1100
4.8V
* Output port of MCU can be used to control the voltage and current settings
* 4.0V is selected at RESET
12
Table3: LED driver select
Table4: Main SW
D2 D1 D0 LED3 LED2 LED1
0 0 0 OFF OFF OFF
0 0 1 OFF OFF ON
0 1 0 OFF ON OFF
0 1 1 OFF ON ON
1 0 0 ON OFF OFF
1 0 1 ON OFF ON
1 1 0 ON ON OFF
1 1 1 ON ON ON
D1 D0 SW1 SW2
0 0 OFF OFF
0 1 OFF ON
1 0 ON OFF
1 1 Not Select