Datasheet

bq294502, bq294504, bq294512, bq294515
bq294522, bq294524, bq294532, bq294562
bq294572, bq294582, bq294592
www.ti.com SLUSAJ3C –SEPTEMBER 2011–REVISED MAY 2012
DC CHARACTERISTICS
Typical values stated where T
A
= 25°C and VDD = 10.8 V, MIN/MAX values stated where T
A
= –40°C to 110°C and V
DD
=
3 V to 15 V (unless otherwise noted).
Symbol Parameter Condition Min Typ Max Unit
Voltage Protection Threshold VCx
1.0 bq294502, fixed delay 4 s 4.35 V
1.1 bq294504, fixed delay 6.5 s 4.35 V
1.2 bq294512, fixed delay 4 s 4.40 V
1.3 bq294515, fixed delay 4 s 4.425 V
1.4 bq294522, fixed delay 4 s 4.45 V
V
(PROTECT)
–
1.5 bq294524, fixed delay 6.5 s 4.45 V
V
OV
Overvoltage
1.6 bq294532, fixed delay 4 s 4.50 V
Detection
1.7 bq294562, fixed delay 4 s 4.25 V
1.8 bq294572, fixed delay 4 s 4.00 V
1.9 bq294582, fixed delay 4 s 4.225 V
1.10 bq294584, fixed delay 6.5 s
(1)
4.225 V
1.11 bq294592, fixed delay 4 s 4.30 V
Overvoltage
1.12 V
HYS
Detection 250 300 400 mV
Hysteresis
OV Detection
1.13 V
OA
T
A
= 25°C –10 10 mV
Accuracy
T
A
= -40°C -40 44 mV
OV Detection
T
A
= 0°C -20 20 mV
1.14 V
OA –DRIFT
Accuracy due to
T
A
= 60°C -24 24 mV
Temperature
T
A
= 110°C -54 54 mV
Supply and Leakage Current
(V3–V2) = (V2–V1) = (V1–VSS) = 4.0 V (See
1 2
Figure 11 for reference)
1.15 I
CC
Supply Current µA
(V3–V2) = (V2–V1) = (V1–VSS) = 2.8 V with T
A
=
1.25
–40°C to 60°C
Measured at V3, V2, and V1 = 4.0 V
Input Current at
1.16 I
IN
(V2–V1) = (V1–VSS) = 4.0 V –0.1 0.1 µA
Vx Pins
T
A
= 0°C to 60°C (See Figure 11 for reference.)
Output Drive OUT
(V3–V2) or (V2–V1) or (V1–VSS) > V
OV
1.17 6 V
V
DD
= 7.2 V, I
OH
= 100 µA, T
A
= –40°C to 110°C
Two of the three cells are short circuit and only one
cell is powered
VDD –
1.18 Output Drive (V3–V2) or (V2–V1) or (V1–VSS) > V
OV
V
V
OUT
0.2
Voltage V
DD
= Vx (Cell voltage), I
OH
= 100 µA, T
A
= –40°C to
110°C
(V3–V2), (V2–V1), and (V1–VSS) < V
OV
, I
OL
= 100
1.19 µA, T
A
= 25°C 250 400 mV
T
A
= –40°C to 110°C
OUT Short
1.20 I
OUT(Short)
OUT = 0 V (V3–V2) or (V2–V1) or (V1–VSS) > V
OV
4.5 mA
Circuit Current
Output Rise
1.21 t
R
CL = 1 nF, V
OH(OUT)
= 0 V to 5 V
(2)
5 µs
Time
Output
1.22 Z
O
2 5 kΩ
Impedance
Fixed Delay Timer
Fixed Delay, bq2945x2 3.2 4 4.8
Fault Detection
1.23 t
DELAY
s
Delay Time
Fixed Delay, bq2945x4 5.2 6.5 7.8
(1) Product Preview only
(2) Specified by design. Not 100% tested in production.
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