Datasheet

bq76925
www.ti.com SLUSAM9B –JULY 2011– REVISED DECEMBER 2011
RECOMMENDED OPERATING CONDITIONS
(1)
MIN TYP MAX UNIT
Supply voltage range BAT 4.2 26.4 V
Cell input differential, VCn to VCn+1, n = 0 to 5 1.4 4.4 V
Cell input, VCn, n = 1 to 6 4.4 × n V
BAT to VC6 differential –8 8 V
VC0, SENSEN 0 V
V
IN
Input voltage range
SENSEP –125 375 mV
SCL, SDA 0 5.5 V
V3P3 Backfeeding
(2)
5.5 V
ALERT Wakeup function 0 26.4 V
V3P3 +
VCOUT, VIOUT 0 V
0.2
REFSEL = 0 1.5 V
VREF
REFSEL = 1 3.0 V
V
OUT
Output voltage range
VTB 5.5 V
V3P3 Regulating 3.3 V
VCTL 0.8 26.4 V
ALERT Alert function 0 5.5 V
I
CB
Cell balancing current 0 50 mA
R
BAT
BAT filter resistance 100 Ω
C
BAT
BAT filter capacitance 10 µF
R
IN
External cell input resistance
(3)
100 Ω
C
IN
External cell input capacitance 0.1 1 10 µF
R
SENSEN
Current sense input filter resistance 1K Ω
R
SENSEP
C
SENSE
Current sense input filter capacitance 0.1 µF
Without external bypass transistor 0
R
VCTL
VCTL pullup resistance Ω
With external bypass transistor 200K
Without external bypass transistor 4.7
C
V3P3
V3P3 output capacitance µF
With external bypass transistor 1.0
C
REF
VREF output capacitance 1.0 µF
VCOUT 0.1 µF
C
OUT
ADC channel output capacitance
VIOUT 470 2000 pF
T
OPR
Operating free-air temperature –25 85 °C
T
FUNC
Functional free-air temperature –40 100 °C
(1) All voltages are relative to VSS, except “Cell input differential.”
(2) Internal 3.3-V regulator may be overridden (i.e. backfed) by applying an external voltage larger than the regulator voltage.
(3) R
IN,MIN
= 0.5 × (VCn
MAX
/ 50 mA) if cell balancing used so that maximum recommended cell balancing current is not exceeded.
Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): bq76925