ISL6292D

FN9166 Rev.0.00

Page 4 of 13

July 2004

Pin Description

VIN (Pin 1, 15, 16)

VIN is the input power source. Connect to a wall adapter.

STAT2 (Pin 2)

STAT2 is an open-drain output to indicate the charger status.

This pin is pulled to LOW during charging and to HIGH when

not charging. When a fault situation occurs, the pin outputs a

one-speed blinking indication.

STAT1 (Pin 3)

STAT1 is an open-drain output to indicate the charger status.

The STAT1 pin is pulled LOW when the charger is charging a

battery and to HIGH when the charge finishes. This pin outputs

two different speeds of blinking signal depending on the type of

the fault case.

TIME (Pin 4)

The TIME pin determines the oscillation period by connecting a

timing capacitor between this pin and GND. The oscillator also

provides a time reference for the charger.

GND (Pin 5)

GND is the connection to system ground.

TOEN (Pin 6)

TOEN is the TIMEOUT enable input pin. Pulling this pin to

LOW disables the TIMEOUT charge-time limit for the fast

charge modes. Leaving this pin HIGH or floating enables the

TIMEOUT limit.

EN (Pin 7)

EN is the enable logic input. Connect the EN pin to LOW to

disable the charger or leave it floating to enable the charger.

V2P8 (Pin 8)

This is a 2.8V reference voltage output. This pin outputs a 2.8V

voltage source when the input voltage is above POR threshold

and outputs zero otherwise. The V2P8 pin can be used as an

indication for adapter presence. Use a 1

F ceramic capacitor

to stabilize the internal linear regulator.

IREF (Pin 9)

This is the programming input for the constant charging

current.

IMIN (Pin 10)

IMIN is the programmable input for the end-of-charge current.

TEMP (Pin 11)

TEMP is the input for an external NTC thermistor. The TEMP

pin is also used for battery removal detection.

VBAT (Pin 12, 13, 14)

VBAT is the connection to the battery. Typically a 10

F

Tantalum capacitor is needed for stability when there is no

battery attached. When a battery is attached, only a 0.1

F

ceramic capacitor is required as the minimum decoupling

capacitor.

Typical Application

V2P8

EN

GND

VBAT

IREF

STAT2

VIN

5V WALL

ADAPTER

BATTERY

PACK

IMIN

TEMP

STAT1

TIME

ISL6292D

V2P8

TOEN

T

10µF

330



1µF

80k



15nF

80k



1µF

+

-