Datasheet

bq20z65-R1
www.ti.com SLUS990 –DECEMBER 2009
ELECTRICAL CHARACTERISTICS (continued)
Over operating free-air temperature range (unless otherwise noted), T
A
= –40°C to 85°C, V
(REG25)
= 2.41 V to 2.59 V,
V
(BAT)
= 14 V, C
(REG25)
= 1 µF, C
(REG33)
= 2.2 µF; typical values at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(CHG)
: V
(PACK)
+ V
(CHGON)
≥ V
(PACK)
+
40 200
1V
t
f
Fall time C
L
= 4700pF μs
V
(DSG)
: VC1 + V
(DSGON)
≥ VC1 + 1 V 40 200
V
(ZVCHG)
ZVCHG clamp voltage BAT = 4.5 V 3.3 3.5 3.7 V
LOGIC; T
A
= –40°C to 100°C (unless otherwise noted)
ALERT 60 100 200
R
(PULLUP)
Internal pullup resistance kΩ
RESET 1 3 6
ALERT 0.2
V
OL
Logic low output voltage level RESET; V
(BAT)
= 7V; V
(REG25)
= 1.5 V; I
(RESET)
= 200 μA 0.4 V
GPOD; I
(GPOD)
= 50 μA 0.6
LOGIC SMBC, SMBD, PFIN, PRES, SAFE, ALERT, DISP
V
IH
High-level input voltage 2.0 V
V
IL
Low-level input voltage 0.8 V
V
REG25
–0.
V
OH
Output voltage high
(1)
I
L
= –0.5 mA V
5
V
OL
Low-level output voltage PRES, PFIN, ALERT, DISP; I
L
= 7 mA; 0.4 V
C
I
Input capacitance 5 pF
I
(SAFE)
SAFE source currents SAFE active, SAFE = V
(REG25)
–0.6 V –3 mA
I
lkg(SAFE)
SAFE leakage current SAFE inactive –0.2 0.2 µA
I
lkg
Input leakage current 1 µA
ADC
(2)
Input voltage range TS1, TS2, using Internal V
ref
–0.2 1 V
Conversion time 31.5 ms
Resolution (no missing codes) 16 bits
Effective resolution 14 15 bits
Integral nonlinearity ±0.03 %FSR
(3)
Offset error
(4)
140 250 µV
Offset error drift
(4)
T
A
= 25°C to 85°C 2.5 18 μV/°C
Full-scale error
(5)
±0.1% ±0.7%
Full-scale error drift 50 PPM/°C
Effective input resistance
(6)
8 MΩ
COULOMB COUNTER
Input voltage range –0.20 0.20 V
Conversion time Single conversion 250 ms
Effective resolution Single conversion 15 bits
–0.1 V to 0.20 V ±0.007 ±0.034
Integral nonlinearity %FSR
–0.20 V to –0.1 V ±0.007
Offset error
(7)
T
A
= 25°C to 85°C 10 µV
Offset error drift 0.4 0.7 µV/°C
Full-scale error
(8) (9)
±0.35%
Full-scale error drift 150 PPM/°C
(1) RC[0:7] bus
(2) Unless otherwise specified, the specification limits are valid at all measurement speed modes.
(3) Full-scale reference
(4) Post-calibration performance and no I/O changes during conversion with SRN as the ground reference.
(5) Uncalibrated performance. This gain error can be eliminated with external calibration.
(6) The A/D input is a switched-capacitor input. Since the input is switched, the effective input resistance is a measure of the average
resistance.
(7) Post-calibration performance
(8) Reference voltage for the coulomb counter is typically V
ref
/3.969 at V
(REG25)
= 2.5 V, T
A
= 25°C.
(9) Uncalibrated performance. This gain error can be eliminated with external calibration.
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