EUP8202-4.2/8.4
Pin Configurations
Package Type
Pin Configurations
Package Type
Pin Configurations
TDFN-10
SOP-8
Pin Description
PIN
TDFN-10 SOP-8
DESCRIPTION
Compensation, Soft-Start and Shutdown Control Pin. Charging begins when the
COMP pin reaches 850mV. The recommended compensation components are a
2.2µF (or larger) capacitor and a 0.5k series resistor. A 100µA current into the
compensation capacitor also sets the soft-start slew rate. Pulling the COMP pin
below 280mV will shut down the charger.
COMP
1
1
VCC
2
3
2
Positive Supply Voltage Input.
Gate Drive Output. Driver Output for the external P-Channel MOSFET. The
voltage at this pin is internally clamped to 8V below VCC, allowing a low
voltage MOSFET with gate-to-source breakdown voltage of 8V or less to be
used.
3
GATE
PGND
SGND
GND
4
5
-
-
-
4
5
IC Ground.
6
Charge Status Output.
CHRG
Battery Sense Input. A bypass capacitor of 22µF is required to minimize ripple
voltage. When VBAT is within 250mV of VCC, the EUP8202 is forced into sleep
mode, dropping ICC to 10µA.
Current Amplifier Sense Input. A sense resistor, RSENSE, must be connected
between the SENSE and BAT pins. The maximum charge current is equal to
100mV/RSENSE.
BAT
7
8
6
7
SENSE
NTC (Negative Temperature Coefficient) Thermistor Input. With an external
10kΩ NTC thermistor to ground, this pin senses the temperature of the battery
pack and stops the charger when the temperature is out of range. To disable the
temperature qualification function, ground the NTC pin.
NTC
NC
9
8
-
10
No Connect.
DS8202 Ver 1.1 Nov.2007
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
