BQ27500_08 Datasheet, PDF (3/39 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

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2 DEVICE INFORMATION
bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
SLUS785D – SEPTEMBER 2007 – REVISED APRIL 2008
2.1 AVAILABLE OPTIONS
PART NUMBER
bq27500DRZR
bq27500DRZT
bq27500DRZR-V100
bq27500DRZT-V100
bq27501DRZR
bq27501DRZT
FIRMWARE
VERSION ⁽¹⁾
V1.06
V1.08
V1.08
PACKAGE ⁽²⁾
T_A
12-pin, 2,5-mm × 4-mm
SON
–40°C to 85°C
COMMUNICATION
FORMAT
I²C
TAPE and
REEL
QUANTITY
3000
250
3000
250
3000
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.
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
NAME
TERMINAL
bq27500 bq27501
PIN NO. PIN NO.
TYPE ⁽¹⁾
DESCRIPTION
BAT
4
4
I
Cell-voltage measurement input. ADC input
BAT_GD
12
12
O
Battery-good indicator. Active-low by default, though polarity can be configured through
the [BATG_POL] of Operation Configuration. Open-drain output
BAT_LOW
1
1
O
Battery-low output indicator. Active-high by default, though polarity can be configured
through the [BATL_POL] in Operation Configuration. Push-pull output
BI/TOUT
2
2
I/O
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor
multiplexer control pin. Open-drain I/O. Use with pullup resistor > 1 MΩ (1.8 MΩ typical).
NC
9
–
–
No connection (bq27500)
RID
SCL
SDA
–
9
I
Resistor ID input (bq27501). Analog input with current sourcing capabilities
11
11
I
Slave I²C serial communications clock input line for communication with system (master).
Open-drain I/O. Use with 10-kΩ pullup resistor (typical).
10
10
I/O
Slave I²C serial communications data line for communication with system (master).
Open-drain I/O. Use with 10-kΩ pullup resistor (typical).
SRN
SRP
8
8
IA
Analog input pin connected to the internal coulomb counter where SRN is nearest the
System V_SS connection. Connect to 5-mΩ to 20-mΩ sense resistor.
7
7
IA
Analog input pin connected to the internal coulomb counter, where SRP is nearest the
PACK– connection. Connect to 5-mΩ to 20-mΩ 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-µF capacitor, minimum.
V_SS
6
6
P
Device ground. Electrically connected to the IC exposed thermal pad (do not use thermal
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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DEVICE INFORMATION
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