Copyright

© ANPEC Electronics Corp.

Rev. A.4 - Mar., 2009

APL3201

www.anpec.com.tw

4

Electrical Characteristics (Cont.)

Refer to the typical application circuit. These specifications apply over V

,

unless otherwise specified. Typical values are at T

APL3201

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

SOFT-START AND REVSRSE CURRENT

Soft-Start Interval

Current

4

7

12

ms

BATT Input Current

-

-

8

µA

BATT Shutdown Input Current

-

-

4

µA

LOGIC INPUT/OUTPUTS

STAT1, STAT2 Logic-Low Output

Sinking 10mA

-

-

0.4

V

STAT1, STAT2 Off-Leakage Current

-

-

1

µA

EN Logic Input-High Level

1.6

-

-

V

EN Logic Input-Low Level

-

-

0.4

V

EN Input Bias Current

-

-

1

µA

PIN

NO.

NAME

FUNCTION

1

VIN

bypassed with at least a 4.7

µF capacitor.

2

STAT1

Charge Status Output Pin 1. This pin is an active-high, open-drain output pin.

3

ISET

Charging Current Setting Pin. Connecting a resistor from this pin to GND set the fast-charge

current when the VIN is powering the charger.

4

GND

Ground.

5

EN

Charging Enable/Disable Control Pin. Drive EN high to begin charging, and EN low to stop

charging.

6

THRM

External Thermistor Connection Pin. THRM pauses charging when an externally connected

thermistor (10k

Ω at +25°C) is at less than 0°C or greater than +50°C. Connecting this pin to GND

disables this function.

7

REF

3V Reference Voltage Output Pin. Sources up to 500

µA to bias the external thermistor. Bypass

with 0.1

µF to GND. REF loading does not affect BATT regulation accuracy.

8

STAT2

Charge Status Output Pin 2. This pin is an active-high, open-drain output pin.

9

BYP

Bias Supply Pin for Internal Circuitry. Bypass with a 2.2

µF capacitor to GND.

10

BATT

Charger Output Pin. Connect this pin to the positive terminal of a Li+ battery.

-

EP

Exposed Pad. Connect a large ground plane for maximum package heat dissipation. Connect

directly to GND under the IC.

Pin Description