Datasheet M62254FP Datasheet (Mitsubishi)

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

(3) Watch Dog Timer

5V

VTH+∆VTH

VDD

0V

2.7V

Mitsubishi Semiconductor < DIGI•ANA Interface >

M62254FP

Standard Battery Charger Controller

VTH

TC

WD

RESET

1

2 3

4

5 6

7 8

9

0.2V

0V

0V

tWDIN

0V

1

When VDD reaches 4.75V (VTH1+∆VTH1); after fixed amount of time (td), Reset pin outputs "High"
and begin charging of the condenser connected TC pin.
When TC pin reaches 2.7V (VTH2(H)); the condenser connected TC pin begin discharge, and the
Reset pin outputs "Low". During the Reset outputs "High" for the first time; the time of charge will
be tWD + tRT(1), since TC pin begin charging its condenser starting from 0V.
When TC pin drops to 0.2V (VTH2(L)); the Reset will outputs "High" again. At same time, TC pin will
begin charging again. Unless correct clock input is given to WD pin, the TC pin will repeats the
charging from 0.2V to 2.7V, and the Reset will also repeats "High" during the tWD cycle, and "Low"
during tRT(2) cycle.
When correct clock input is given to WD pin before TC pin reaches 2.7V, the Reset holds "High"
output.
When incorrect clock is given to WD pin, the TC pin will repeats the charging from 0.2V to 2.7V, and
the Reset will also repeats "High" during the tWD cycle, and "Low" during tRT(2) cycle.
When VDD drops down to 4.25V (VTH1), the Reset circuit will function, and it will output "Low" to
Reset pin and TC pin changes to discharging state.

td

2

tRT(1)

tRT(2)

tWD

3 4 5 6 7 8 9

(4) Reset circuit

∆VTH1

VTH1

VDD

0.65

RESET
Output

When VDD reaches 4.75V (VTH1+∆VTH1), the Reset outputs

1

"High" after fixed amount of time (td).

2

When VDD drops below 4.25V (VTH1), the Reset outputs
"Low"

3

When VDD reaches 4.75V (VTH1+∆VTH1) again, the Reset
outputs "High" after fixed amount of time (td). Also, Reset
output will be "Low" until VDD reaches 0.65V(typ).

td

1

td

2 3

Mitsubishi Semiconductor < DIGI•ANA Interface >

Standard Battery Charger Controller

Word description:

td : The time after VDD reaching Reset release voltage to "High" Reset output.
tRT(1) : The time TC pin voltage changes from 0V to VTH2(L), when VDD is given.
tWD : The time TC pin voltage changes from VTH2(L) to VTH2(H).
tRT(2) : The time TC pin voltage changes from VTH2(H) to VTH2(L).

M62254FP

1. Regarding the pin (Ctd pin) capacity and the delay time (td)
The delay time (td) of Reset output can be found using following equation.

2. Regarding charge and discharge of pin (TC pin)

When incorrect clock is given to the WD pin, the voltage level of TC pin will be changed as show below.

tRT(1)

3. Regarding the input clock, input pulse width, charging time, and discharging time of pin (WD pin)26

25

td = 2x10 x Ctd (S)

5

tWD

27

tRT(2)

tRT(1) = 8 x 10 x Ctd (S)
tWD = 1 x 10 x CT (S)

tRT(2) = 2.5 x 10 x CT (S)

3

5

4

When correct clock is given to the WD pin, the voltage level of TC pin will be changed as show below.

2.7V

xV

TC

t1

WD

Please, set the pulse width (tWDIN) more than tWDIN(MIN).

t2

tWDIN(MIN)

0.2V

t1 = 1 x 10 x CT x

t2 = x t1

5

1
4

x - 0.2

2.5

Pin description

Pin # Symbol Description

24

CS

Mitsubishi Semiconductor < DIGI•ANA Interface >

M62254FP

Standard Battery Charger Controller

The serial data input pin which used to receives 8 bit wide serial data.

23

22

17
11

12~15

16
10

9

7 , 8

3~5

19

21
20
29

30

28

32

2 , 33

1 , 34

36 , 35

31

6
18
27

26
25

CK

DI

DOUT

REF

IN1~4

ISENSE

CD

SSW
MSW1~2
LED1~3

vDD

VB

Vcc

IDET
Iadj
VDET

P.C
OPIN1-,IN2-
OPIN1+,IN2+

OPOUT1,2

GND

P.GND
RESET

TC

WD
Ctd The pin used to connect capacitor to determine delay time the output after the Reset.

The shift clock input pin which takes the input signal of DI pin to 8 bit shift register by
the rising edge of the clock signal.

When CS pin is "Low", this pin can receive the data into the 8 bit shift register. The
each bit will be latched at rising edge of the clock signal.

The output pin of the amplified A-D input.
The reference voltage output pin of the A-D converter.
The A-D converter input pin.

The current sense input pin.
The input pin for the current detection to feed back of sub-switch driver.

The sub-switch driver output pin.
The main switch driver output pin. (Open collector)

The LED driver output pin. (Open collector)
The stabilized +5V output pin.
The pre-drive pin which used to connect the external PNP Tr.
The power supply pin.

The current detection input pin.
The input pin for current detection adjustment.
The voltage detection input pin.

The feedback pin for voltage and current control.
The inverted input pin of Op. amp.
The non-inverted input pin of Op. amp.
The Op. amp. output pin. (Open collector output)
The ground pin.

The ground pin of power unit. (Main switch driver and LED driver)
The output pin of Reset and WDT. (Pulled up to VDD)
The pin used to connect capacitor to determine the time constant of WDT.
The input pin of the WDT.

Absolute Maximum Ratings

Mitsubishi Semiconductor < DIGI•ANA Interface >

M62254FP

Standard Battery Charger Controller

Items

Power supply voltage
Main switch drive current
Sub switch drive current
LED drive current
Regulator output current
P.C drive current IPC
Main switch max. voltage

Sub switch max. voltage
LED max. drive voltage
P.C max. voltage
Power dissipation
Thermal derating ratio
Operating temperature
Storage temperature

Symbols Condition

Vcc
ISW

ISUB
ILED
IB

VSW
VSUB
VLED Vcc
VPC Vcc V
Pd

K

Topr
Tstg

Ratings

16

200

-5
30
20

10
Vcc V
Vcc

650

6.5

-20~+85

-40~+125

Unit

V
mA
mA
mA

mA
mA

V

V

mW

mW/°C

°C

°C

Electrical Characteristics (Ta=25°C ,Vcc=12V,ISW=50mA,ILED=20mA unless specified otherwise)

4.75

4.05
30

3.5

5

Standard

15

5.00 5.25
50

10
60

0.2

4.25
50

0.15

25

100

0.2 0.4

5

1x10 CT

4

2.5x10 CT

5

2x10 Ctd

10

15

200
100

4.45
80

1.5

20

mA

mV
mV

dB

mV
mA

µA
µA

µs

BlockWDT / RESET

Power supply voltage
Circuit current

Stabilized voltage output
Input variable ratio
Load variable ratio
Ripple remove ratio
Min. I/O voltage difference

5V power supply

VDD detection voltage
Hysteresis voltage

WD input current
WD "H" input voltage
WD "L" input voltage
TC charge current
TC discharge current
Reset output saturation voltage
WDT time
Reset timer time

Reset output delay time td
Min. input pulse width

Items Symbols Conditions Unit

Vcc
Icc
VDD
Reg-in
Reg-L

R.R f = 120Hz, Vin = 0dbm
VDEF
VTH1
∆VTH1
IWD

VWDH
VWDL
ITCH
ITCL
VRESL

tWD
tRT

tWDIN(MIN)

IB = 10mA
VDD + 0.2V
IDD = 1~100mA

VWD = +5V

IRES = 1mA

Min Typ Max

VDD+0.2

V

V

V
V

V
V

V
S
S
S

Mitsubishi Semiconductor < DIGI•ANA Interface >

M62254FP

Standard Battery Charger Controller

Electrical Characteristics (Ta=25°C ,Vcc=12V,ISW=50mA,ILED=20mA unless specified otherwise)

Items Symbols Conditions Unit

Main SW "L" output voltage
Sub SW "L" output voltage
LED "L" output voltage

DriverControl Op.Op Amp.Voltage Mag.

Sub SW detection voltage
Input voltage range
Input bias current
P.C "L" output voltage

Input offset voltage
Input bias current
Input offset current
Phase input range
Open loop gain
Through rate
Output voltage range
Output sink current

IN input voltage range
IN input current IIN nA

VsatM
Vsats
VsatL
VCD
VIN

VPCL

VIo
IIB
IIO
VICM
AV
SR
VOR
Isink
VISENSE

VIN

IM=50mA
Is=5mA
ILED=20mA

IPC=5mA

Vcc ≥ 7V
Vcc = 5.5V

Standard

Min Typ Max

0.8

0.8

0.8

1.0

0

-1

0.2

-100

-0.3 Vcc-2
80

0.2
20

0.2

0.2 3.5

-100

Vcc-2

2

100

4 Vcc

1.2

1.2

1.2

0.4

7

0.5
5

V
V
V
V
V

µA

V

mV

nA
nA

V

dB

V/µs

V

mA

VISENSE input voltage range
V
V

Mitsubishi Semiconductor < DIGI•ANA Interface >

<Application example of M62254FP>

To battery

resister

Current

detection

Multiplexer

circuit

Driver

detection

driver

Sub SW

circuit

Level

magnification

battery

temperature

detection

M62254FP

Standard Battery Charger Controller

detection switch

Battery mount

VDD

AVDD

VREF

K0

K1AVSS

SO

RAM

ROM

256

64/128

4K ,

1K/2K ,

VSS

CNTR

Main SW Tr.

Tricle current setting resister

To VDD

MAX

30 mA

control

Current

-

F2 F1
F3F0

M34225M1/M2

Reset

WDT

M50927

D8

XIN

+

-

S1 2 3 D0 1 2 3 4 5 6 7

INT

Ctd

CT

4 bit MCU with built-in A-D converter

RESET

VDD

Reset

circuit

circuit

-

+

When WDT is not

used,connect to GND

Serial Parallel

circuit

control

Voltage

-

Current

IN CLOCK

conversion circuit

CS

+

control OP

A B

driver

Main SW

3

2

circuit

LED driver

1

Voltage

regulator

+

Voltage

control OP

photo

coupler

Mitsubishi Semiconductor < DIGI•ANA Interface >

< MCU and its connection layout >

M62254FP

Standard Battery Charger Controller

CD

REF

IN1
IN2

IN3
IN4

OUT

DD

NC

NC
NC

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18

1
2
3

4
5
6
7
8
9

10

11
12
13
14
15
16
17
18

M C U

M62254FP

M34225

M50927

OPIN1+
OP IN1-

LED1
LED2
LED3

P.GND GND

MSW1
MSW2

SSW

SENSE

I

D

RESET

RESET

INT

AVss

V

REF

K0
K1

AV

S0
S1

S2
S3

D0
D1

(0V)CNVss

(0V)Vss

36

OP

OUT1

35

OP

OUT2

34

OP

IN2+

33

OP

IN2-

32

P.C

31
30

Iadj

29

IDET

28

VDET

27

TC

26

WD

25

Ctd

24

CS

23

CK

22

DI

21

VB

20

Vcc

19

V

DD

36

V (5V)DD

35

CNTR

34
33
32
31
30
29
28
27
26
25
24
23
22
21
20

19

IN

X
X

OUT

NC
NC

F3/S
F2/S

F1/CLK
F0/SRDY

NC

D8
D7
D6

D5
D4
D3

D2

IN
OUT

Outline : 36P2R

Actual size