BQ27500 Datasheet, PDF (3/39 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

www.ti.com
2 DEVICE INFORMATION
bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
SLUS785 – SEPTEMBER 2007
2.1 AVAILABLE OPTIONS
PART NUMBER
bq27500DRZR
bq27500DRZT
bq27501DRZR ⁽²⁾
bq27501DRZT ⁽²⁾
PACKAGE ⁽¹⁾
12-pin, 2,5 mm x 4,0 mm
SON
T_A
–40°C to 85°C
COMMUNICATION
FORMAT
I²C
TAPE and REEL
QUANTITY
3000
300
3000
300
(1) 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.
(2) Product Preview
2.2 PIN DIAGRAMS
BAT_LOW_ 1
BI/TOUT 2
TS 3
BAT 4
V_CC ⁵
V_SS 6
bq27500
12 BAT_GD
11 SCL
10 SDA
9 NC
8 SRN
7 ^SRP
BAT_LOW_ 1
BI/TOUT 2
TS ³
BAT ⁴
V_CC ⁵
V_SS ⁶
bq27501
12 _{BAT_GD}
11 SCL
10 SDA
9 RID
8 SRN
7 ^SRP
2.3 TERMINAL FUNCTIONS
PIN NO.
TERMINAL
NAME
NAME
bq27500 bq27501
I/O ⁽¹⁾
DESCRIPTION
1
BAT_LOW BAT_LOW
O
Battery Low output indicator. Active high by default, though polarity can be configured
through the [BATL_POL] in Operation Configuration Push-pull output.
2
BI/TOUT BI/TOUT
3
TS
TS
I/O
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor
multiplexer control pin. Open-drain I/O. use with pull-up resistor > 1MΩ (1.8MΩ typical)
P
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input.
4
BAT
BAT
I
Cell-voltage measurement input. ADC input.
5
V_CC
6
V_SS
7
SRP
V_CC
V_SS
SRP
8
SRN
SRN
9
NC
RID
10 SDA
SDA
11 SCL
SCL
12 BAT_GD BAT_GD
P
Processor power input. Decouple with 0.1μF capacitor, minimum.
P
Device ground.
IA
Analog input pin connected to the internal coulomb-counter where SRP is nearest the
CELL- connection. Connect to 5-20mΩ sense resistor.
IA
Analog input pin connected to the internal coulomb-counter where SRN is nearest the
PACK- connection. Connect to 5-20mΩ sense resistor.
–, I
No connection (bq27500). Resistor ID input (bq27501). Analog input with current sourcing
capabilities.
I/O
Slave I²C serial communications data line for communication with system (Master).
Open-drain I/O. Use with 10kΩ pull-up resistor (typical).
I
Slave I²C serial communications clock input line for communication with system (Master).
Open-drain I/O. Use with 10kΩ pull-up resistor (typical).
O
Battery Good indicator. Active low by default, though polarity can be configured through
the [BATG_POL] of Operation Configuration. Open-drain output.
(1) I/O = Digital Input/Output, IA = Analog Input, P = Power Connection
Submit Documentation Feedback
DEVICE INFORMATION
3