AS3715 datasheet(49/160 Pages) AMSCO

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ams Datasheet, Confidential

Page 49

[v1-00] 2014-Sep-10

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AS3715 − Detailed Description – Power Management Functions

Charger JEITA Temp Supervision

The more complex JEITA temperature supervision is monitoring

T1 (0°C), T2 (10°C), T3 (45°C) and T4 (60°C) and adjusting

charging current and voltage to it.

Figure 48:

JEITA Temp Supervision

JEITA Temp Supervision Diagram: Shows the voltage and current settings for the JEITA temperature

supervision.

Dual Battery Switching

The charger is only charging the battery connected to

CHGOUT/VIBAT, but can handle to batteries and controls the

external battery switches accordingly.

T1upper

TEMPERATURE [°C]

CHARGE

CURRENT

CHARGE

VOLTAGE

0.5C

Typical Charge Voltage: Veoc(typ)

3.5V < Veoc(warm) < 4.34V

750mA < Icc_normal(typ) < 1500mA

60mA < Itrickle(typ) < 240mA

COLD

TYPICAL

HOT

Charger

is OFF

Charger

is OFF

350mA < Icc_low(typ) < 750mA

T1lower

T4upper

T4lower

350mA < Icc_low(cool) < 750mA

60mA < Itrickle(cool) < 120mA

COOL

T2upper

T2lower

Maximum Charging Current 1C

WARM

T3upper

T3lower

Veoc(warm)=Veoc(typ)-100mV

3.5V < Veoc(typ) < 4.44V

350mA < Icc_normal(cool) < 750mA

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