Datasheet
2 DEVICE INFORMATION
2.1 AVAILABLE OPTIONS
2.2 PIN DIAGRAMS
BAT
V
SS
SRN
SRP
V
CC
BAT_GD
SDA
SCL
1
2
3
4
5
6
12
11
10
9
8
7
BAT_LOW
TS
1
2
3
4
5
6
12
11
10
9
8
7
BI/TOUT
BAT
V
SS
V
CC
BAT_LOW
TS
BI/TOUT
NC
SRN
SRP
BAT_GD
SDA
SCL
RID
bq27500
bq27501
2.3 TERMINAL FUNCTIONS
bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
www.ti.com
SLUS785D – SEPTEMBER 2007 – REVISED APRIL 2008
TAPE and
FIRMWARE COMMUNICATION
PART NUMBER PACKAGE
(2)
T
A
REEL
VERSION
(1)
FORMAT
QUANTITY
bq27500DRZR 3000
V1.06
bq27500DRZT 250
bq27500DRZR-V100 3000
12-pin, 2,5-mm × 4-mm
V1.08 –40 ° C to 85 ° C I
2
C
SON
bq27500DRZT-V100 250
bq27501DRZR 3000
V1.08
bq27501DRZT 250
(1) Ordering the device with the latest firmware version is recommended. To check the fiirmware revision and Errata list see SLUZ015
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com .
TERMINAL
TYPE
(1)
DESCRIPTION
bq27500 bq27501
NAME
PIN NO. PIN NO.
BAT 4 4 I Cell-voltage measurement input. ADC input
Battery-good indicator. Active- low by default, though polarity can be configured through
BAT_GD 12 12 O
the [BATG_POL] of Operation Configuration. Open-drain output
Battery-low output indicator. Active- high by default, though polarity can be configured
BAT_LOW 1 1 O
through the [BATL_POL] in Operation Configuration. Push-pull output
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor
BI/TOUT 2 2 I/O
multiplexer control pin. Open-drain I/O. Use with pullup resistor > 1 M Ω (1.8 M Ω typical).
NC 9 – – No connection (bq27500)
RID – 9 I Resistor ID input (bq27501). Analog input with current sourcing capabilities
Slave I
2
C serial communications clock input line for communication with system (master).
SCL 11 11 I
Open-drain I/O. Use with 10-k Ω pullup resistor (typical).
Slave I
2
C serial communications data line for communication with system (master).
SDA 10 10 I/O
Open-drain I/O. Use with 10-k Ω pullup resistor (typical).
Analog input pin connected to the internal coulomb counter where SRN is nearest the
SRN 8 8 IA
System V
SS
connection. Connect to 5-m Ω to 20-m Ω sense resistor.
Analog input pin connected to the internal coulomb counter, where SRP is nearest the
SRP 7 7 IA
PACK– connection. Connect to 5-m Ω to 20-m Ω sense resistor.
TS 3 3 IA Pack thermistor voltage sense (use 103AT-type thermistor). ADC input
V
CC
5 5 P Processor power input. Decouple with 0.1- µ F capacitor, minimum.
Device ground. Electrically connected to the IC exposed thermal pad (do not use thermal
V
SS
6 6 P
pad as primary ground. Connect thermal pad to Vss via a PCB trace).
(1) I = Digital input, O = Digital output, I/O = Digital input/output, IA = Analog input, P = Power connection
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