Mitsubishi M62254FP Datasheet
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
APPLICATIONS
Video camera, Hand carry telephone and general battery
charger for other digital equipments
Pin layout(Top view)
1
OP
IN1+
OP
IN1-
2
LED1
3
LED2
4
5
LED3
MSW1
MSW2
SSW
CD
REF
IN1
IN2
IN3
IN4
ISENSE
DOUT
6
7
8
9
10
11
12
13
14
15
16
17
18
P.GND GND
RESET
M62254FP
36P2R
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
OPOUT1
OPOUT2
OP
IN2+
IN2-
OP
P.C
Iadj
IDET
V
DET
TC
WD
Ctd
CS
CK
DI
V
B
Vcc
V
DD
Block diagram
P.C
32
OPOUT1
36
OPOUT2
35
Voltage
control OP
Current
control OP
31
VDET Iadj IDET
+
-
+
-
+
-
+
-
33
IN2-
OP
34
IN2+
Voltage
control
circuit
Current
control
circuit
2 25
1
IN1-
OP
IN1+
Vcc V
Voltage
regulator
Reset
circuit
Ctd
B DD
V
LED1 LED2 LED3 MSW1 MSW2 SSW
LED driver
/
/
/
WDT
6 18 27
circuit
/
Serial Parallel
conversion circuit
CS INCLOCK
262224 23
Main SW
DIOP
driver
/
987543192120293028
Sub SW
driver
Driver
detection
/
/
circuit
Amp1
9 1
-
+
Amp2
+
10
16
12
13
14
15
CD
ISENSE
IN1
IN2
IN3
IN4
-
REF
3
1
17
DOUTCKCSWDTCRESETP.GNDGND OP
11
«Digital Data Format»
Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
MSB
DI
CK
CS
Latch
MPX
Current Voltage
control
SW
«Data Setting»
Control Function
8 bit Shift register
D7 D6 D5 D4 D3 D2 D1 D0
Address decoder
8
Latch Latch Latch Latch LatchLatchLatch
MPX MPX MPX MPX MPX MPX MPX
control
SW
LED
drive
SW
Address Data
D7 D6 D5 D4 D3 D2 D1 D0
Main
SW
Sub
SW
Input Amp
SW
A-D
input
SW
4
Reference
voltage
SW
Description
LSB
RESET
Current control
Voltage control
LED driver select
Main SW
Sub SW
Amp.select
A-D input select
A-D Reference select
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- -
All SW is OFF
-
A-D reference voltage=0.4V
Voltage setting reference voltage = 4.0V
See Table 1
-
See Table 2
-
See Table 3
-
See Table 4
-
See Table 5
-
See Table 6
-
See Table 7
-
See Table 8
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
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0V 0
20mV
40mV
80mV
160mV
240mV
320mV
–
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
0
0
0
0
0
0
0
0
1
1
1
1
1
* Output port of MCU can be used to control the voltage and current settings
* 4.0V is selected at RESET
D2 D1 D0
0
0
0
0
1
1
1
1
0
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
Voltage control OPAmp input voltage Voltage Ratio
0
1
0
1
0
1
0
1
0
1
0
1
0 4.8V 12
0V
0.4V
0.8V
1.2V
1.6V
2.0V
2.4V
2.8V
3.2V
3.6V
4.0V
4.4V
1/16
1/8
1/4
1/2
3/4
1
10
1
2
3
4
5
6
7
8
9
10
11
Table3: LED driver select
D2 D1 D0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
LED3 LED2 LED1
OFF OFF OFF
OFF
OFF
OFF ON
ON
OFF
OFF ON ON
ON OFF OFF
ON
OFF ON
ON ON OFF
ON ON ON
Table4: Main SW
D1 D0
0
0
1
1
0
1
0
1
SW1 SW2
OFF OFF
OFF
ON
OFF
ON
Not Select
Mitsubishi Semiconductor < DIGI•ANA Interface >
M62254FP
Standard Battery Charger Controller
Table5: Sub SW
D0 SW
OFF0
1 ON
Table6: Amp. select
D1 D0
0
0
1
* Amp1 output is selected at RESET
Table7: A-D input select
D1 D0 State
0
0
1
1
* Input 1 is selected at RESET
0
1
0
0
1
0
1
State
Select Amp1 output
Select Amp2 input
Select Amp2 output
Select input 1
Select input 2
Select input 3
Select input 4
Table8: A-D Reference voltage select
D3 D2 D1 D0 State
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
* 0.4V is selected at RESET
Note: All outputs will be OFF at RESET
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
0
Select 0V
Select 0.4V
Select 0.8V
Select 1.2V
Select 1.6V
Select 2.0V
Select 2.4V
Select 2.8V
Select 3.2V
Select 3.6V
Select 4.0V
Select 4.4V
Select 4.8V
«Function block descriptions»
(1) A-D converter input
Voltage regulator
reference voltage
Select the desire reference voltage to be detected by serial data from the MCU.
The input voltage level of IN1~IN4 will be magnified 4 times using selected
reference voltage as a center. This magnified data will be return to the A-D
input port of the MCU. As result, accuracy of the A-D converter of the MCU will
be increased by 2 bit.
(2) +5V voltage regulator
Q1
IDD
4.8V
0.4V
+5V
~
~
*Connect few 1000pF capacitor to stabilize the reference voltage
since it is capable of driving external PNP Tr. base
up to 20mA, it can supply current of IDD MAX =
20mA x Q1hFE.
Also, since this is low I/O type power source, it can
operate VCC MIN = VCC – VDD = 0.1V.
+
-
3 1
+
-
REF
*
Vcc V
B
DD
V
Loading...