BQ294502 Datasheet, PDF (4/18 Pages) Texas Instruments – Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries

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SLUSAJ3C – SEPTEMBER 2011 – REVISED MAY 2012
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Thermal Pad, PWRPAD
For correct operation, the power pad (PWRPAD) is connected to the V_SS terminal on the printed circuit board.
FUNCTIONAL BLOCK DIAGRAM
PACK+
R _VD
C_VD
VDD
R_IN
V3
C_IN
R_IN
V2
CIN
RIN
V1
C_IN
VSS
V_OV
OSC
PWRPAD
REG
INT_ EN
Delay
Timer
OUT
PACK–
ABSOLUTE MAXIMUM RATINGS
Over operating free-air temperature range (unless otherwise noted)⁽¹⁾
PARAMETER
CONDITION
VALUE/UNIT
Supply voltage range
VDD–VSS
–0.3 to 30 V
Input voltage range
V1–VSS or V2–VSS or V3–VSS
V3–V2 or V2–V1
–0.3 to 30 V
–0.3 to 8 V
Output voltage range
OUT–VSS
–0.3 to 30 V
Continuous total power dissipation, P_TOT
Functional temperature
See package dissipation rating.
–65 to 110°C
Storage temperature range, T_STG
Lead temperature (soldering, 10 s), T_SOLDER
–65 to 150°C
300°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.
RECOMMENDED OPERATING CONDITIONS
Over operating free-air temperature range (unless otherwise noted)
PARAMETER
Supply voltage, V_DD(1)
Input voltage range V3–V2 or V2–V1 or V1–VSS
Operating ambient temperature range, TA
(1) See APPLICATION SCHEMATIC.
MIN
NOM MAX UNIT
3
25
V
0
5
V
–40
110
°C
4
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