BQ27500-V120 Datasheet, PDF (4/36 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

bq27500-V120
System-Side Impedance Track™ Fuel Gauge
SLUS880 – OCTOBER 2008
www.ti.com
PIN
NAME
NO.
SDA
10
SRN
8
SRP
7
TS
3
V_CC
5
V_SS
6
Table 2-1. PIN FUNCTIONS (continued)
TYPE ⁽¹⁾
I/O
IA
IA
IA
P
P
DESCRIPTION
Slave I²C serial communications data line for communication with system (master).
Open-drain I/O. Use with 10-kΩ pullup resistor (typical).
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.
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.
Pack thermistor voltage sense (require the use of NTC 103AT-type thermistor). ADC input
Processor power input. Decouple with 0.1-µF capacitor, minimum.
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).
3 ELECTRICAL SPECIFICATIONS
3.1 ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)⁽¹⁾
PARAMETER
VALUE
UNIT
V_CC
V_IOD
V_BAT
V_I
ESD
Supply voltage range
Open-drain I/O pins (SDA, SDL, BAT_GD)
BAT input pin
Input voltage range to all other pins (BI/TOUT, TS, SRP, SRN, NC)
Human-body model (HBM), BAT pin
Human-body model (HBM), all other pins
–0.3 to 2.75
V
–0.3 to 6
V
–0.3 to 6
–0.3 to V_CC + 0.3
V
1.5
kV
2
T_A
Operating free-air temperature range
T_F
Functional temperature range
T_stg
Storage temperature range
–40 to 85
°C
–40 to 100
°C
–65 to 150
°C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
3.2 RECOMMENDED OPERATING CONDITIONS
T_A = -40°C to 85°C; Typical values at T_A = 25°C and V_CC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
I_CC
I_SLP+
I_SLP
I_HIB
V_OL
Supply voltage
Normal operating-mode current
Sleep+ operating-mode current
Low-power storage-mode current
Hibernate operating-mode current
Output voltage, low (SDA, BAT_LOW,
BI/TOUT)
Fuel gauge in NORMAL mode.
I_LOAD > Sleep Current
Fuel gauge in SLEEP+ mode.
I_LOAD < Sleep Current
Fuel gauge in SLEEP mode.
I_LOAD < Sleep Current
Fuel gauge in HIBERNATE mode.
I_LOAD < Hibernate Current
I_OL = 0.5 mA
V_OH(PP)
V_OH(OD)
Output voltage, high (BAT_LOW, BI/TOUT)
Output voltage, high (SDA, SCL, BAT_GD)
I_OH = –1 mA
External pullup resistor connected to
V_CC
MIN TYP MAX UNIT
2.4 2.5 2.6 V
114
µA
58
µA
19
µA
4
µA
0.4 V
V_CC – 0.5
V
V_CC – 0.5
V
4
ELECTRICAL SPECIFICATIONS
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