M62253BGP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M62253BGP

Charge Control IC for Li-Ion Batteries

Renesas Electronics 

M62253BGP

Flowchart for Charging

Insert Battery

Charge inhibit

charge off

LED1: turned OFF

LED2: turned OFF

No 1.49 V < VTIN < 3.21 V

Yes

Delay CKT. for temp.

detect is start to action

After 49 ms

No

1.49 V < VTIN < 3.23 V

Yes

LED1: turned ON and

Const. current charge: 256 mA or

Const. voltage charge: 4.2 V (during 1.15 s)

Charge inhibit

charge off

LED1: turned OFF

LED2: turned OFF

Const. voltage output:

1.46 V (during 106 ms)

Const. voltage charge: 4.2 V

Const. current charge: 250 mA

Check battery voltage

less than 1.54 V

4.2 V or more

Check battery voltage

1.54 V < Vbatt < 4.2 V

Check battery voltage

3.07 V < Vbatt < 4.2 V

1.54 V < Vbatt < 3.07 V

charge

Check charge current

completion

charge completion

current or more

current or less

Delay CKT. for current

detect is start to action

3.07 V < Vbatt < 4.2 V

4.2 V or more

Const. voltage charge: 4.2 V

less than 3.07 V

charge Check charge current

completion

current or more

charge completion

current or less

Const. current charge: 26 mA

Check battery voltage

3.07 V or more

No

Charge current:

charge completion current

or less (pass to 1.15 s)

Yes

Stop the charge

(to change output voltage

to 1.46 V)

Flowchart of temp. detect. (with hysteresis) during charge

Delay CKT. for current

detect is start to action

No

Charge current:

charge completion current

or less (pass to 1.15 s)

When high temp.

Const. current or

Const. voltage charge.

(1.49 V < VTIN < 3.23 V)

No

VTIN < 1.49 V

When low temp.

Const. current or

Const. voltage charge.

(1.49 V < VTIN < 3.23 V)

No

3.23 V < VTIN

Yes

Yes

Yes

Stop the charge

(to change output voltage to 1.46 V)

Delay CKT. for temp.

detect is start to action

Delay CKT. for temp.

detect is start to action

LED1: OFF

LED2: ON

Complete charge (charge OFF)

passed 1.06 s

LED1: turned OFF, LED2: turned ON

3.99 V or more

Check battery voltage

3.99 V or less

Delay CKT. for current

detect is start to action

No

After 49 ms

VTIN < 1.59 V

Yes

Charge inhibit

No

1.59 V < VTIN

Yes

Delay CKT. for temp.

detect is start to action

No

After 49 ms

3.21 V < VTIN

Yes

Charge inhibit

No

VTIN < 3.13 V

Yes

Delay CKT. for temp.

detect is start to action

No

Battery voltage

3.99 V or less

(pass to 1.06 s)

Yes

No

After 49 ms

1.49 V < VTIN

Yes

No

After 49 ms

VTIN < 3.23 V

Yes

Notes: 1. The voltage, current, and time values depend on application circuit.

2. Chage completion current = one fifth ADJ voltage/Rsense

REJ03F0243-0200 Rev.2.00 Sep 14, 2007

Page 6 of 12

Share Link: