bq29311

SLUS487D − DECEMBER 2001 − REVISED NOVEMBER 2003

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3

ELECTRICAL CHARACTERISTICS

TA = 25°C, CREG = 1 µF, VCC = 14 V (unless otherwise noted)

SUPPLY CURRENT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

I(CC1)

Supply current 1

No load at VREG, TOUT,

LEDOUT, XALERT, SCLK,

TA = 25°C

140

190

µA

I(CC1)

Supply current 1

LEDOUT, XALERT, SCLK,

SDATA. CLKIN not used

TA = −25°C to 85°C

220

µA

I(CC2)

Supply current 2

VBAT

≤ VSD, VPACK = 0

DSG, CHG and PCHG = off

TA = −25°C to 85°C

1

µA

3.3 V REGULATOR

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(REG)

Regulator output voltage

IO ≤ 25 mA,

TA = −25°C to 85°C

3.135

3.3

3.465

V

∆V(REGTEMP)

Regulator output change with

V(SD) = 6.5 V ≤ VCC ≤ 25 V,

TA = −25°C to 25°C

±0.2% ±1.74%

∆V(REGTEMP)

Regulator output change with

temperature

V(SD) = 6.5 V ≤ VCC ≤ 25 V,

IO = 25 mA

TA = 25°C to 85°C

±0.2% ±1.74%

∆V(REGLINE)

Line regulation

V(SD) =6.5 V ≤ VCC ≤ 25V,

IO = 25 mA

6

20

mV

∆V(REGLOAD) Load regulation

0.1 mA

≤ IO ≤ 25 mA,

VCC = 14 V

2

20

mV

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(SD)

VREG shutdown threshold range(1)

Measured at VBAT

6.475

10.975

V

∆V(SD)

Shutdown threshold steps

Set by SDV register b0 −b3

300

mV

Vhys(SD)

Hysteresis

35

50

65

mV

Accuracy of the shutdown threshold

±5%

(1) V(SD) = V(REG) brownout threshold voltage as determined by b0−b3 in the SDV register.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VBO

Brownout threshold range(1)

Measured at VBAT

7.975

12.475

V

∆VBO

Brownout threshold steps

Set by SDV register b4 − b7

300

mV

Vhys(BO)

Hysteresis

35

50

65

mV

Brownout threshold accuracy

±5%

(1) VBO = V(REG) brownout threshold voltage as determined by b4−b7 in the SDV register.

CELL VOLTAGE MONITOR

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V(CELL_OUT) VCELL output (see Note 4)

V(CELL_IN) = 0 V

0.975

V

V(CELL_OUT) VCELL output (see Note 4)

V(CELL_IN) = 4.5 V

0.3

V

V(CELL_IN)

Differential Input voltage range

VC1 to VC2, VC2 to VC3,

VC3 to VC4, VC4 to VC5

0

4.5

V

K

VCELL scale factor

[0.975 −V(CELL_OUT) ]/V(CELL_IN)

0.144

0.150

0.156

R(BAL)

Cell balance internal resistance

RDS(ON) for internal FET switch at V(DS) = 2 V

500

Ω

(1) The V(CELL) output is inversely proportional to the V(CELL_OUT) = −K × V(CELL_IN) + 0.975.

Not Recommended for New Designs