BQ24105 datasheet(5/29 Pages) TI

Part #	BQ24105

Description	SYNCHRONOUS SWITCHMODE, LI-ION AND LI-POL CHARGE MANAGEMENT IC WITH INTEGRATED POWERFETS (bqSWITCHER)

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Manufacturer	TI [Texas Instruments]

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bq24100, bq24103, bq24105

bq24108, bq24113, bq24115

SLUS606B − JUNE 2004 − REVISED NOVEMBER 2004

5

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ELECTRICAL CHARACTERISTICS (continued)

TJ = 0°C to 125°C and recommended supply voltage range (unless otherwise stated)

PARAMETER

UNIT

MAX

TYP

MIN

TEST CONDITIONS

100 mV ≤ VIREG-PRE ≤ 100 mV,

VIREG*PRE +

0.1V

RSET2

1000,

VIREG-PRE

Voltage regulated across RSNS−

Accuracy

(PGM)

Where

1.2 kΩ ≤ RSET2 ≤ 10kΩ, Select RSET1

to program VIREG−PRE,

VIREG−PRE (Measured) = IOPRE−CHG × RSNS

(−20% to +20% excludes errors due to RSET1

and RSNS tolerances)

−20%

20%

CHARGE TERMINATION (CURRENT TAPER) DETECTION

ITERM

Charge current termination detec-

tion range

VI(BAT) > VRCH

15

200

mA

VTERM

Charge termination detection set

voltage, ISET2

VI(BAT) > VRCH

100

mV

K(ISET2)

Termination current set factor

1000

V/A

Charger termination accuracy

VI(BAT) > VRCH

−20%

20%

tdg-TERM

Deglitch time for charge termination

Both rising and falling,

2-mV overdrive

tRISE, tFALL = 100 ns

20

30

40

ms

TEMPERATURE COMPARATOR AND VTSB BIAS REGULATOR

VLTF

Cold temperature threshold, TS

72.8

73.5

74.2

VHTF

Hot temperature threshold, TS

33.7

34.4

35.1

%

VTCO

Cutoff temperature threshold, TS

28.7

29.3

29.9

%

VO(VTSB)

LTF hysteresis

0.5

1.0

1.5

O( S )

tdg-TS

Deglitch time for temperature fault,

TS

Both rising and falling,

2-mV overdrive

tRISE, tFALL = 100 ns

20

30

40

ms

VO(VTSB)

TS bias output voltage

VCC > VIN(min),

I(VTSB) = 10 mA

0.1 µF ≤ CO(VTSB) ≤ 1 µF,

3.15

V

VO(VTSB)

TS bias voltage regulation accuracy

VCC > IN(min),

I(VTSB) = 10 mA

0.1 µF ≤ CO(VTSB) ≤ 1 µF,

−10%

10%

BATTERY RECHARGE THRESHOLD

VRCH

Recharge threshold voltage

Below VOREG

75

100

125

mV/cell

tdg-RCH

Deglitch time

VI(BAT) < decreasing below threshold,

tFALL = 100 ns

10-mV overdrive

20

30

40

ms

STAT1, STAT2, AND PG OUTPUTS

VOL(STATx)

Low-level output saturation voltage,

STATx

IO = 5 mA

0.5

V

VOL(PG)

Low-level output saturation voltage,

PG

IO = 10 mA

0.1

V

CE CMODE, CELLS INPUTS

VIL

Low-level input voltage

IIL = 5 µA

0.0

0.4

V

VIH

High-level input voltage

IIH = 20 µA

1.3

VCC

V

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