BQ2947_17 Datasheet, PDF (6/27 Pages) Texas Instruments – Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor

bq2947
SLUSB15F – SEPTEMBER 2012 – REVISED JANUARY 2017
www.ti.com
7.5 Electrical Characteristics
Typical values stated where T_A = 25°C and VDD = 14.4 V, MIN/MAX values stated where T_A = –40°C to +110°C and V_DD = 3
V to 20 V (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNIT
VOLTAGE PROTECTION THRESHOLDS
V_OV
V_(PROTECT) Overvoltage
Detection
V_HYS
V_OA
V_OADRIFT
OV Detection Hysteresis
OV Detection Accuracy
OV Detection Accuracy
Across Temperature
SUPPLY AND LEAKAGE CURRENT
bq294700, R_IN = 1 kΩ
bq294701, R_IN = 1 kΩ
bq294702, R_IN = 1 kΩ
bq294703, R_IN = 1 kΩ
bq294704, R_IN = 1 kΩ
bq294705, R_IN = 1 kΩ
bq294706, R_IN = 1 kΩ
bq294707, R_IN = 1 kΩ
bq294708, R_IN = 1 kΩ
bq294709⁽¹⁾, R_IN = 1 kΩ
bq294711⁽¹⁾, R_IN = 1 kΩ
bq2947 ⁽²⁾
T_A = 25°C
T_A = –40°C
T_A = 0°C
T_A = 60°C
T_A = 110°C
4.350
V
4.250
V
4.300
V
4.325
V
4.400
V
4.450
V
4.550
V
4.225
V
4.500
V
4.160
V
4.220
V
250
300
400 mV
–10
10 mV
–40
40 mV
–20
20 mV
–24
24 mV
–54
54 mV
I_DD
I_IN
I_CELL
Supply Current
(V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4.0 V
at T_A = 25°C (See Figure 11.)
Input Current at Vx Pins
(V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4.0 V
at T_A = 25°C (See Figure 11.)
–0.1
Input Current (ALL Vx
and VDD Input Pins)
Current Consumption at Power down, (V4–V3) =
(V3–V2) = (V2–V1) = (V1–VSS) = 2.30 V at T_A =
25°C
1
2
µA
0.1
µA
1.1
µA
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