AP4305 datasheet(13/32 Pages) AKM

13 / 32 page

[AP4305]

Rev 0.5.0

Figure 4. Flowchart of charge

Non connection

Connected

Stop Charge

TBAT ≤ TLOW or TBAT ≥ THIGH

VBAT ≥VTRKL

Battery Voltage

Drop

Trickle Charge 1

Time out

VBAT < VCC

Expire Extended Charge Time

Non battery

Connection

VBAT ≥ VCC

Maintain the battery

voltage value before

fast charge as VBOF.

VBAT < VTRKL

VBAT ≥VTRKL and VBOF<VRECH

VBAT < VCC

VBAT < VRECH

Canceled stop charge condition

(Note) Can select non extended charge at the time of factory shipment

CHGEN bit = ”1” and

CHG_ENB pin = Low

To Charge

Enable Check

Prohibit

Charge

VBAT ≥ VCC and

VBOF ≥ VRECH

CHGEN bit = ”0” or

CHG_ENB pin = High

CHGEN bit = ”0” or

CHG_ENB pin = High

CHGEN bit = ”0” or

CHG_ENB pin = High

Trickle Charge 2

Time out

ICHG < IEOC in CV mode or

Time out

TBAT ≥ TLOW and TBAT ≤ THIGH

Detect Charge Protection

• Thermal Shut Down

• Irregular BatteryTemp.

• No connected Battery

Detect VOUT over voltage

Detect Battery over voltage

Detect Battery over current

ICHG < Ieoc in CV mode or

Time out

Battery Temp.

Check

Trickle Charge 1

Trickle Charge 2

Trickle Charge

Check

Fast Charge

Full Charge

Voltage Check

Extended Charge

(Note)

End of Charge

Recharge

USB Charge Port

Detection

Charge Enable Check

Primary side power

supply Detection

Battery Connection

Check

AP4305 Datasheet(PDF) 13 Page - Asahi Kasei Microsystems

AP4305 Datasheet(HTML) 13 Page - Asahi Kasei Microsystems

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