BQ2060SS Datasheet, PDF (2/59 Pages) Texas Instruments – SBS V1.1-COMPLIANT GAS GAUGE IC

bq2060
SLUS035E – JANUARY 2000 – REVISED OCTOBER 2005
PIN DESCRIPTIONS
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TERMINAL
NAME
NO.
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 bq2060
and the external nonvolatile configuration memory
ESDA
Serial memory data and address. Bidirectional pin used to transfer address
3
and data to and from the bq2060 and the external nonvolatile configuration
memory
Register backup input. Input that provides backup potential to the bq2060
RBI
4
registers during periods of low operating voltage. RBI accepts a storage
capacitor or a battery input.
REG
5
Regulator output. Output to control an n-JFET for V_CC regulation to the
bq2060 from the battery potential
V_OUT
6
Supply output. Output that supplies power to the external EEPROM
configuration memory
V_CC
V_SS
DISP
7
Supply voltage input
8
Ground.
9
Display control input. Input that controls the LED drivers LED1–LED5
LED₁-LED₅
10,11,12,
13,14
LED display segment outputs. Outputs that each may drive an external LED
DFC
15
Discharge FET control output. Output to control the discharge FET in the
Li-ion pack protection circuitry
CFC
16
Charge FET controll output. Output to control the charge FET in the Li-ion
pack protection circuitry
CVON
Cell voltage divider controll output. Output control for external FETs to
17
connect the cells to the external voltage dividers during cell voltage
measurements
THON
18
Thermistor bias control output. 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-
VCELL₄
SMBD
23,24,25,2 Single-cell voltage inputs. Inputs that monitor the series element cell
6
voltages
27
SMBus data. Open-drain bidirectional pin used to transfer address and data
to and from the bq2060
SMBC
28
SMBus clock. Open-drain bidirectional pin used to clock the data transfer to
and from the bq2060
ORDERING INFORMATION
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