BQ2058T Datasheet, PDF (9/18 Pages) Texas Instruments – Lithium Ion Pack Supervisor For 2-Cell Packs

bq2058T
DC Electrical Characteristics (TA = TOPR)
Symbol
Parameter
VOH
Output high voltage
VOL
Output low voltage
V_OP
Operating voltage
VIL
Input low voltage
VIH
Input high voltage
ICCA
Active current
ICCS
Sleep current
RCELL
Input impedance
Minimum
VCC - 0.5
-
0
-
VSS + 2.0
-
-
-
Typical
-
-
-
-
-
12
0.7
10
Maximum
-
VSS + 0.5
9.0
VSS + 0.5
-
25
1.5
-
Unit
Conditions/Notes
V I_OH = 10µA, CHG, DSG
V I_OL = 10µA, CHG, DSG
V VCC relative to VSS
V Pin CTL
V Pin CTL
µA
µA
MΩ Pins BAT2N, BAT1N, and BAT1P
DC Thresholds (TA = TOPR)
Symbol
Parameter
Value
Unit Tolerance
Conditons
VOV Overvoltage threshold
4.25
V
±55mV See note 1
Table 1
Customer option
V_CE
Charge enable threshold VOV - 150mV V
±55mV
VUV
Undervoltage threshold
2.25
V
±100mV
Overcurrent detect
VOCH _high-side
160
mV
±35mV
Overcurrent detect
V_{OCL low-side}
160
mV
±35mV
VCD
Charge detect threshold
70
mV -60mV, +80mV
tOVD
Overvoltage delay
threshold
C_OVD = 0.100µF
950
ms
±40%
TA = 30°C
See note 2
tUVD
Undervoltage delay
threshold
C_UVD = 0.100µF
950
ms
±40%
TA = 30°C
See note 2
Overcurrent delay thresh-
tOCD _old
12
ms
±40%
C_OCD = 0.01µF
T_A = 30°C
Notes:
1. Standard device. Contact Benchmarq for different thresholds and tolerance options
2. Does not include cell sampling delay, which may add up to 120ms of additional delay until the
condition is detected.
July 1997
9