bq294700 datasheet(6/27 Pages) TI1

Part #	bq294700

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

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bq2947

SLUSB15F – SEPTEMBER 2012 – REVISED JANUARY 2017

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7.5 Electrical 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).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOLTAGE PROTECTION THRESHOLDS

VOV

V(PROTECT) Overvoltage

Detection

bq294700, RIN = 1 kΩ

4.350

V

bq294701, RIN = 1 kΩ

4.250

V

bq294702, RIN = 1 kΩ

4.300

V

bq294703, RIN = 1 kΩ

4.325

V

bq294704, RIN = 1 kΩ

4.400

V

bq294705, RIN = 1 kΩ

4.450

V

bq294706, RIN = 1 kΩ

4.550

V

bq294707, RIN = 1 kΩ

4.225

V

bq294708, RIN = 1 kΩ

4.500

V

bq294709(1), RIN = 1 kΩ

4.160

V

bq294711(1), RIN = 1 kΩ

4.220

V

VHYS

OV Detection Hysteresis

bq2947(2)

250

300

400

mV

VOA

OV Detection Accuracy

TA = 25°C

–10

10

mV

VOADRIFT

OV Detection Accuracy

Across Temperature

TA = –40°C

–40

40

mV

TA = 0°C

–20

20

mV

TA = 60°C

–24

24

mV

TA = 110°C

–54

54

mV

SUPPLY AND LEAKAGE CURRENT

IDD

Supply Current

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

at TA = 25°C (See Figure 11.)

1

2

µA

IIN

Input Current at Vx Pins

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

at TA = 25°C (See Figure 11.)

–0.1

0.1

µA

ICELL

Input Current (ALL Vx

and VDD Input Pins)

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

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

25°C

1.1

µA

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