BQ2060A_15 Datasheet, PDF (2/61 Pages) Texas Instruments – SBS v1.1-Compliant Gas Gauge IC

bq2060A
SLUS500D – OCTOBER 2001 – REVISED OCTOBER 2011
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
Pin Descriptions
PIN
NAME NUMBER
DESCRIPTION
HDQ16
1
Serial communication input/output. Open-drain bidirectional communications port
ESCL
2
Serial memory clock. Output to clock the data transfer between the bq2060A and the external nonvolatile
configuration memory
ESDA
3
Serial memory data and address. Bidirectional pin used to transfer address and data to and from the bq2060A
and the external nonvolatile configuration memory.
RBI
4
Register backup input. Input that provides backup potential to the bq2060A registers during periods of low
operating voltage. RBI accepts a storage capacitor or a battery input.
REG
V_OUT ⁽¹⁾
V_CC ⁽¹⁾
V_SS
DISP
LED₁–LED₅
DFC
5
6
7
8
9
10–14
15
Regulator output. Output to control an n-JFET for VCC regulation to the bq2060A from the battery potential
EEPROM supply output. Output that supplies power to the external EEPROM configuration memory
Supply voltage input
Ground
Display control input. Input that controls the LED drivers LED₁–LED₅
LED display segment outputs. Outputs that each may drive an external LED
Discharge FET control. Output to control the discharge FET in the Li-ion pack protection circuitry
CFC
16 Charge FET control output. Output to control the charge FET in the Li-ion pack protection circuitry
CVON
17
Cell voltage divider control output. Output control for external FETs to connect the cells to the external voltage
dividers during cell voltage measurements
THON
18
Thermistor bias control. Output control for external FETs to connect the thermistor bias resistor during a
temperature measurement
TS
19 Thermistor voltage input. Input connection for a thermistor to monitor temperature
SRC
20 Current sense input. Input to monitor instantaneous current
SR₁– SR₂
21–22
Charge-flow sense resistor inputs. Input connections for a small value sense resistor to monitor the battery
charge and discharge current flow
VCELL₁–VC
ELL₄
SMBD
23–26
27
Single-cell voltage inputs. Inputs that monitor the series element cell voltages
SMBus data. Open-drain bidirectional pin used to transfer address and data to and from the bq2060A
SMBC
28 SMBus clock. Open-drain bidirectional pin used to clock the data transfer to and from the bq2060A
(1) CAUTION: Recent changes to some EEPROM ICs have made the timing of the V_OUT pin unreliable. It is strongly recommended that the
EEPROM is powered from the V_CC pin (pin 7). Also, it is acceptable to short pins 6 and 7, if needed.
ORDERING INFORMATION
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI Web site at www.ti.com.
2
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