M62256 Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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M62256

Single chip battery charger control IC

MITSUBISHI ELECTRIC  

Mitsubishi Integrated Circuit <Digital/Analog Interface>

M62256FP

Single chip battery charger control IC

3. Discharge Operation

(1) Discharge Control

The Dchg SW terminal is used for the forced discharge of the battery. Discharge starts when this

terminal stays "L" 0.7seconds or more. The Dchg IN terminal and the Dchg OUT terminal are used to

control discharge. These terminal contain the feedback function which enables constant current

discharge.

(2) Detection of Adapter

When the voltage of the battery which has been discharging reaches 5V or less, the discharge

Mode has canceled. ( Charging Mode takes over.)

(3) Forced Ending of Discharge

Once the discharge mode is in progress, it is possible to cancel the discharge mode by making the

Dchg SW terminal to "L" once more. (Stays 0.7 seconds or more.)

(4) RESET Operation

The RESET circuit goes into operation when the power supply voltage goes 2.8V(typ) or lower. The

internal logic circuit are all RESET to the initial states.

(5) Modes Setting

The Adapter Mode has the highest priority. Modes are switched in the following.

(a) When the power is turned ON

Power ON puts the Adapter Mode in Standby

Batt IN causes the Charge

Mode to take over.

Adpt IN causes the Adapter

Mode to take over.

(b) When the battery is connected …

Adpt IN causes the Adapter Mode to take over.

* Quick charge ………………… Adpt IN causes the initial RESET to start and

the Adapter Mode goes into operation.

Adpt OUT starts the Charging Mode by way of

the initial check.

* Trickle charge ………………… Adpt IN sets the Charge OFF and the Adapter

Mode takes over.

The Charge OFF Mode continues after Adpter OUT.

* Charge OFF …………………… Adpt IN causes temporary stop. Then, the

Adapter Mode takes over.

* Charge standby (Preliminary charge) ……… Continues after Adpt OUT

(c) When the battery is disconnected during the Adapter is in operation

Adpt IN

Batt OUT

Adpt OUT

Adapter Mode standby

Adpt IN

Batt OUT

Batt IN

Adpt OUT

: It is assumed that a different battery connected and the Charge Mode

starts by way of the initial check.

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