M62256FP

Mitsubishi Integrated Circuit <Digital/Analog Interface>

Single chip battery charger control IC

Unit

Items

Symbols

Conditions

Standard

Min

Typ

Max

Items

Symbols

Conditions

Standard

Min

Typ

Max

Unit

Internal Voltage Set-up

Set-up output voltage at Adpt mode

Set-up output voltage at charge mode

I

set-up voltage

SET1

I

set-up voltage

SET2

OCSET set-up voltage

Over-voltage set-up voltage

-

∆V detection voltage1

Voltage at the end of discharge

Temperature detection set-up voltage1

Over-heating detection set-up voltage

Set-up output voltage when

over-current is detected

-

∆V detection voltage2

Temperature detection set-up voltage2

CHG

V

DOWN

V

ISET1

V

ISET2

V

OCSET

V

OVP

V

-

∆V-1

V

-

∆V-2

V

CHGON

V

TTH1

V

TTH2

V

O/H

V

When quick charging

When trickle charging

When adapter mode

within Initialization timer

after initialization timer has passed

Temperature at the start of charging

Temperature at the start of recharging

Charge stop temperature

820

864

910

mV

1.19

1.26

1.33

V

478

504

530

123

130

137

11.4

12.0

12.6

208

220

232

9.0

9.5

10

0.6

1.0

1.4

60

100

140

4.7

5.0

5.3

0.92

0.97

1.02

1.06

1.12

1.18

0.81

0.86

0.91

mV

mV

mV

mV

mV

V

V

V

V

V

V

Oscillation frequency

Initialization timer1

Undetected time for -É¢V

Safety timer1

Over-current detection time

Initialization timer2

Initialization timer3

Safety timer2

fosc

Tm1

Tms1

Tm2

Tm3

Tms2

Rc=30KÉ

∂ , Cc=2200pF

Battery voltage<5V

5V

≤Battery voltage<6.5V

Battery voltage

≥6.5V

when quick charging

when trickle charging

9.22 10.24 11.26 KHz

18.0

20.0

22.0

min

4.5

5.0

5.5

2.7

3.0

3.3

21.6

24

26.4

9.0

10.0

11.0

hr

sec

min

min

min

hr

2.7

3.0

3.3

2.7

3.0

3.3

Note: The time given to each timer is when the oscillation frequency of 10.24KHz is used.

Recommended Operating Range

Power supply voltage (Vcc) …………………… 3~15V

Charge current (See Note1)

Preliminary charge

……………………… 50~200mA

Quick charge

…………………………… 0.8~2A

Trickle charge

…………………………… 80~200mA

Discharge current (See Note1) ………………… 300~500mA

LED drive current (See Note2) ………………… 115mA

Note1. The charging current must be set according to the battery specifications.

The currents used for quick charge and trickle charge are detemined by the voltage

of the terminals Iset1 and Iset2 and current sense resistor R4 (Application in page 9).

Note2. The LED drive current is calculated by the following equation.

I

=

(A)

LED

200mV

RL

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