XC6801 查看數據表（PDF） - TOREX SEMICONDUCTOR

零件编号

产品描述 (功能)

生产厂家

XC6801

1 Cell Li-ion Battery Linear Charger IC with Constant-Current/Constant-Voltage

TOREX SEMICONDUCTOR 

XC6801

Series

■OPERATIONAL DESCRIPTION

Charge Cycle

(Charge Main Routine)

Trickle Charge

Constant-Current Charge (CC)

Constant-Voltage Charge (CV)

VLIM-“H” IBAT≦IBAT1/10

VLIM-“L” IBAT≦IBAT1/10

Maintaining the charge state

during a charge termination

detect time (1ms)

Charge Termination

(Stand-by mode)

Failure Detection

Input Voltage Monitor (UVLO)

Shut-Down

VIN-BAT Voltage Monitor (UVLO)

Shut-Down

Charge Cycle

Charge Cycle

Maintaining the stand-by mode

during a recharge time (2ms)

<Charge Cycle>

If the BAT pin voltage is less than 2.9V, the charger enters trickle charge mode. In this mode, a safe battery charge is possible

because approximately only 1/10 of the charge current is supplied to the battery. When the BAT pin voltage rises above 2.9V,

the charger enters constant-current mode (CC mode) and the battery is charged by the programmed charge current. When

the BAT pin voltage reaches 4.2V, the charger enters constant-voltage mode (CV mode) automatically. After this, the charge

current starts to drop and when it reaches a level which is 1/10 of the programmed charge current, the charge terminates.

<Setting Charge Current>

The charge current can be set from 475mA（TYP.）or 95mA（TYP.）by the LIM pin.

LIM ”H” level input：475mA（TYP.）

LIM ”L” level input：95mA（TYP.）

<Charge Termination>

The battery charge is terminated when the charge current decreases to 1/10 of the full charging level after the battery pin

voltage reaches a float voltage. An internal comparator monitors the ISEN pin voltage to detect the charge termination. When

the comparator sees that the ISEN pin voltage is less than 1.2ms (charge termination detect time), the IC enters stand-by mode.

A driver transistor turns off during the stand-by mode.

<Automatic Recharge>

In stand-by mode battery voltage falls. When the voltage level at the battery pin drops to 4.05V or less, the charge cycle

automatically re-start after a delay of 1.7ms. As such, no external activation control is needed.

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