BQ29311_15 Datasheet, PDF (3/24 Pages) Texas Instruments – FOUR-CELL LITHIUM-ION

www.ti.com
Not Recommended for New Designs
bq29311
SLUS487D − DECEMBER 2001 − REVISED NOVEMBER 2003
ELECTRICAL CHARACTERISTICS
TA = 25°C, CREG = 1 µF, VCC = 14 V (unless otherwise noted)
SUPPLY CURRENT
PARAMETER
TEST CONDITIONS
I(CC1) Supply current 1
I(CC2) Supply current 2
No load at VREG, TOUT,
LEDOUT, XALERT, SCLK,
SDATA. CLKIN not used
VBAT ≤ VSD, VPACK = 0
DSG, CHG and PCHG = off
TA = 25°C
TA = − 25°C to 85°C
TA = − 25°C to 85°C
MIN TYP MAX UNIT
140 190
µA
220
1 µA
3.3 V REGULATOR
PARAMETER
V(REG)
Regulator output voltage
∆V(REGTEMP)
Regulator output change with
temperature
∆V(REGLINE) Line regulation
∆V(REGLOAD) Load regulation
TEST CONDITIONS
IO ≤ 25 mA,
V(SD) = 6.5 V ≤ VCC ≤ 25 V,
IO = 25 mA
TA = − 25°C to 85°C
TA = −25°C to 25°C
TA = 25°C to 85°C
V(SD) =6.5 V ≤ VCC ≤ 25V,
0.1 mA ≤ IO ≤ 25 mA,
IO = 25 mA
VCC = 14 V
SHUTDOWN V_I MONITOR
PARAMETER
V(SD)
VREG shutdown threshold range(1)
∆V(SD)
Shutdown threshold steps
Vhys(SD) Hysteresis
Accuracy of the shutdown threshold
TEST CONDITIONS
Measured at VBAT
Set by SDV register b0 −b3
(1) V(SD) = V(REG) brownout threshold voltage as determined by b0 −b3 in the SDV register.
BROWNOUT V_IN MONITOR
PARAMETER
VBO
Brownout threshold range(1)
∆VBO
Brownout threshold steps
Vhys(BO) Hysteresis
Brownout threshold accuracy
TEST CONDITIONS
Measured at VBAT
Set by SDV register b4 − b7
(1) VBO = V(REG) brownout threshold voltage as determined by b4 −b7 in the SDV register.
CELL VOLTAGE MONITOR
PARAMETER
TEST CONDITIONS
V(CELL_OUT) VCELL output (see Note 4)
V(CELL_IN) Differential Input voltage range
V(CELL_IN) = 0 V
V(CELL_IN) = 4.5 V
VC1 to VC2, VC2 to VC3,
VC3 to VC4, VC4 to VC5
K
R(BAL)
VCELL scale factor
Cell balance internal resistance
[0.975 −V(CELL_OUT) ]/V(CELL_IN)
RDS(ON) for internal FET switch at V(DS) = 2 V
(1) The V(CELL) output is inversely proportional to the V(CELL_OUT) = −K × V(CELL_IN) + 0.975.
MIN
3.135
TYP MAX
3.3 3.465
± 0.2% ± 1.74%
± 0.2% ± 1.74%
6
20
2
20
UNIT
V
mV
mV
MIN
6.475
35
TYP MAX
10.975
300
50
65
± 5%
UNIT
V
mV
mV
MIN
7.975
35
TYP MAX
12.475
300
50
65
± 5%
UNIT
V
mV
MIN TYP
0.975
0.3
MAX
UNIT
V
0
4.5 V
0.144 0.150 0.156
500
Ω
3