BQ294705DSGT datasheet(6/19 Pages) TI

Part #	BQ294705DSGT

Description	Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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6 / 19 page

bq294700, bq294701, bq294702

bq294703, bq294704, bq294705

SLUSB15 – SEPTEMBER 2012

www.ti.com

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

V4–V3, V3–V2, V2–V1, V1–VSS, or CD–VSS

–0.3 to 30 V

Output voltage range

OUT–VSS

–0.3 to 30 V

Continuous total power dissipation, PTOT

See package dissipation rating.

Storage temperature range, TSTG

–65 to 150°C

Lead temperature (soldering, 10 s),

300°C

TSOLDER

(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

MIN

NOM

MAX

UNIT

Supply voltage, VDD

(1)

3

20

V

Input voltage

V4–V3, V3–V2, V2–V1, V1–VSS, or CD–VSS

0

5

V

range

Operating ambient temperature range, TA

–40

110

°C

(1)

See APPLICATION SCHEMATIC.

DC CHARACTERISTICS

Typical values stated where TA = 25°C and VDD = 14.4 V, MIN/MAX values stated where TA = –40°C to 110°C and VDD = 3 V

to 20 V (unless otherwise noted).

SYMBOL

PARAMETER

CONDITION

MIN

TYP

MAX

UNIT

Voltage Protection Thresholds

bq294700, RIN = 1 kΩ

4.350

V

bq294701, RIN = 1 kΩ

4.250

V

bq294702, RIN = 1 kΩ

4.300

V

V(PROTECT) Overvoltage

VOV

Detection

bq294703, RIN = 1 kΩ

4.325

V

bq294704, RIN = 1 kΩ

4.400

V

bq294705, RIN = 1 kΩ

4.450

V

VHYS

OV Detection Hysteresis

bq2947xy(1)

250

300

400

mV

VOA

OV Detection Accuracy

TA = 25°C

–10

10

mV

TA = –40°C

–40

40

mV

TA = 0°C

–20

20

mV

OV Detection Accuracy

VOADRIFT

Across Temperature

TA = 60°C

–24

24

mV

TA = 110°C

–54

54

mV

Supply and Leakage Current

(V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4.0 V

IDD

Supply Current

1

2

µA

at TA = 25°C (See Figure 14.)

(V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4.0 V

IIN

Input Current at Vx Pins

–0.1

0.1

µA

at TA = 25°C (See Figure 14.)

Current Consumption at Power down, (V4–V3) =

Input Current (ALL Vx

ICELL

(V3–V2) = (V2–V1) = (V1–VSS) = 2.30 V at TA =

1.1

µA

and VDD Input Pins)

25°C

Output Drive OUT, CMOS Active High Versions Only

(1)

Future option, contact TI.

6

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Product Folder Links: bq294700 bq294701 bq294702 bq294703 bq294704 bq294705

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BQ294705DSGT Datasheet(PDF) 6 Page - Texas Instruments

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