bq24004

bq24005

bq24006

SLUS476B – DECEMBER 2000 – REVISED MAY 2002

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6

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

AGND

16

Ground pin; connect close to the negative battery terminal.

APG/THERM

7

I

Adapter power good input/thermistor sense input

CR

12

I

Internal regulator bypass capacitor

EN

8

I

Charge-enable input. Active-high enable input with internal pull down. Low-current stand-by mode active

when EN is low.

GND/HEATSINK

10

Ground pin; connect to PowerPAD heat-sink layout pattern.

IN

2, 3

I

Input voltage. This input provides the charging voltage for the battery.

ISNS

5

I

Current sense input

N/C

1, 6, 11,

15, 20

No connect. These pins must be left floating. Pin 15 is N/C on bq24004PWP only.

OUT

18, 19

O

Charge current output

STAT1

14

O

Status display output 1

STAT2

15

O

Status display output 2 (for bq24005 and bq24006 only)

TMR SEL

13

I

Charge timer selection input

VCC

4

I

Supply voltage

VSEL

9

I

8.2-V or 8.4-V charge regulation selection input

VSENSE

17

I

Battery voltage sense input