BQ24004 Datasheet, PDF (6/22 Pages) Texas Instruments – TWO-CELL Li-ION CHARGE MANAGEMENT IC FOR PDAs AND INTERNET APPLIANCES

bq24004
bq24005
bq24006
SLUS476B – DECEMBER 2000 – REVISED MAY 2002
www.ti.com
Terminal Functions
TERMINAL
NAME
NO.
AGND
16
I/O
DESCRIPTION
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-enableinput. 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,
No connect. These pins must be left floating. Pin 15 is N/C on bq24004PWP only.
15, 20
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
6