XC6802A42XER-G Torex Semiconductor Ltd, XC6802A42XER-G Datasheet - Page 6

• Manufacturer Part Number: XC6802A42XER-G
• Description: 55T4030
• Manufacturer: Torex Semiconductor Ltd

Specifications of XC6802A42XER-G

• Battery Type: Li-Ion
• Input Voltage: 6V
• Battery Charge Voltage: 2.9V
• Charge Current Max: 800mA
• Battery Ic Case Style: USP-6C
• No. Of Pins: 6
• No. Of Series Cells: 1
• Operating Temperature Range: -40°C
• Rohs Compliant: Yes

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■OPERATIONAL EXPLANATION (Continued)
<Charge Condition Status>
The /CHG pin constantly monitors the charge states classified as below:
<Connection of Shorted BAT Pin>
Even if the BAT pin is shorted to the V
by over current.
<Under-voltage Lockout (UVLO)>
The UVLO circuit keeps the charger in shut-down mode until the input voltage, V
Moreover, in order to protect the battery charger, the UVLO circuit keeps the charger in shut-down mode when a voltage
between the input pin voltage and BAT pin voltage falls to less than 30mV. The charge will not restart until the voltage
between the input pin voltage and BAT pin voltage rises more than 100mV. During the shut-down mode, the driver transistor
turns off but a failure detection circuit operates, and supply current is reduced to 10μA.
<Soft-Start Function>
To protect against inrush current from the input to the battery, soft-start time is set in the circuit optimally (100μs, TYP.).
<Manual Shut-Down>
During the charge cycle, the IC can be shifted to the shut-down mode by floating the I
battery is reduced to less than 2μA and a shut-down current of the IC is reduced to less than 10μA. A new charge cycle
starts when reconnecting the current sense resistor.
<Opened BAT Pin>
When the BAT pin is left open, the IC needs to be shut-down once after monitoring the CHG pin by a microprocessor etc and
keeping the I
<Backflow Prevention Between the BAT Pin and the VIN Pin>
A backflow prevention circuit protects against current flowing from the BAT pin to the V
than the V
XC6802
●Strong pull-down: I
●Weak pull-down: I
●High impedance: in shutdown mode.
IN
pin voltage.
SEN
pin in H level.
/CHG Pin
Current
Battery
Voltage
Charge
/CHG
Status
Series
/CHG
=20μA (TYP.) in a stand-by mode,
=10mA (TYP.) in a charge cycle,
Trickle
Battery Termination Detect Time
SS
CC
(1ms, Typ)
, a trickle charge mode starts to operate for protecting the IC from destruction caused
Strong Pull Down
(10mA, Typ)
CV
Weak Pull Down
Standby
(20uA, Typ)
Strong Pull Down
Recharge
Recharge Battery Time
(10mA, Typ)
IN
IN
SEN
, rises more than the UVLO voltage.
pin even the BAT pin voltage is higher
(2ms, Typ)
pin. For this, a drain current to the
I
4.20V
4.05V
I
BAT
2.9V
BAT
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