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bq27505YZGR-J2 Datasheet(PDF) 4 Page - Texas Instruments

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Part # bq27505YZGR-J2
Description  System-Side Impedance Track??Fuel Gauge
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

bq27505YZGR-J2 Datasheet(HTML) 4 Page - Texas Instruments

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2.1 PIN ASSIGNMENT
CSP-12
(TOP VIEW)
A 1
A 2
A 3
B 1
B 2
C 1
C 2
C 3
D 1
D 2
D 3
B 3
A 1
A 2
A 3
B 1
B 2
B 3
C 1
C 2
C 3
D 1
D 2
D 3
CSP-12
(BOTTOMVIEW)
bq27505-J2
System-Side Impedance Track™ Fuel Gauge
SLUS924 – APRIL 2009
www.ti.com
Table 2-1. PIN FUNCTIONS
TERMINAL
TYPE(1)
DESCRIPTION
NAME
NO.
Analog input pin connected to the internal coulomb counter where SRP is nearest the PACK–
SRP
A1
IA
connection. Connect to 5-m
Ω to 20-mΩ sense resistor.
Analog input pin connected to the internal coulomb counter where SRN is nearest the Vss
SRN
B1
IA
connection. Connect to 5-m
Ω to 20-mΩ sense resistor.
Battery Low output indicator. Active high by default, though polarity can be configured through
BAT_LOW
C1
O
the [BATL_POL] bit of Operation Configuration. Push-pull output.
Vss
D1
P
Device ground
Battery-good indicator. Active-low by default, though polarity can be configured through the
BAT_GD
A2
O
[BATG_POL] bit of Operation Configuration. Push-pull output.
SOC state interrupts output. Generate a pulse under the conditions specified by Table 5-5. Open
SOC_INT
B2
I/O
drain output.
Cell-voltage measurement input. ADC input. Recommend 4.8V maximum for conversion
BAT
C2
I
accuracy.
Vcc
D2
P
Processor power input. Decouple with minimum 0.1
µF ceramic capacitor.
Slave I2C serial communications data line for communication with system (Master). Open-drain
SDA
A3
I/O
I/O. Use with 10k
Ω pull-up resistor (typical).
Slave I2C serial communications clock input line for communication with system (Master). Use
SCL
B3
I
with 10k
Ω pull-up resistor (typical).
Battery-insertion detection input. Power pin for pack thermistor network. Thermistor-multiplexer
BI/TOUT
C3
I/O
control pin. Use with pull-up resistor >1M
Ω (1.8 MΩ typical).
TS
D3
IA
Pack thermistor voltage sense (use 103AT-type thermistor). ADC input
(1)
I/O = Digital input/output, IA = Analog input, P = Power connection
4
DEVICE INFORMATION
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