BQ24901_13 Datasheet, PDF (2/18 Pages) Texas Instruments – OFFLNE APPLICATIONS

bq24901
SLUS527 – DECEMBER 2002
DESCRIPTION (continued)
In addition to the standard features, the bq24901 offers battery temperature monitoring and status display. The
temperature-sense circuit continuously measures battery temperature using an external thermistor and
suspends charge until the battery temperature is within the user–defined thresholds. The STAT pins indicate
conditions of operation of the charger. These outputs can be used to drive an LED or interface to a host
microcontroller.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
TA
CHARGE REGULATION
VOLTAGE
PACKAGE DEVICES(1)
TOP SIDE MARKINGS
–20°C to 85°C
4.2 V
bq24901PW
bq24901
(1) _{The PW package is also available taped and reeled. Add an R suffix to the device type (i.e., bq24901PWR) for quantities of 2,500 devices per}
reel.
PACKAGE DISSIPATION RATING TABLE
PACKAGE
PW
θ_JA
110°C/ W
TA ≤ 25°C
POWER RATING
907 mW
DERATING FACTOR
ABOVE TA = 25°C
9.07 mW/°C/
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
bq24901
UNIT
Supply voltage, VCC
with respect to VSS
11.5
V
SNS, BAT, STAT1, STAT2, VCOMP, ICOMP, SCOMP, OPTD, CC
(all with respect to Vss)
11.5
Input voltage range, VI
TADJ, VREF (all with respect to Vss)
7
V
Output sink/source current, IO
Output sink current
TS (with respect to Vss)
STAT1, STAT2, OPTD
CC
VREF
–0.3 to VCC + 0.3 V
20
80
mA
1
Operating free-air temperature range, TA
–40 to 100
Junction temperature range, TJ
Storage temperature, Tstg
–40 to 125
–65 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
300
(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.
RECOMMENDED OPERATING CONDITIONS
Supply voltage, VCC
Operating free-air temperature, TA
MIN MAX UNIT
3
10 V
–20 85 °C
2
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