BQ78412 Datasheet, PDF (3/36 Pages) Texas Instruments – Pb-Acid Battery State-of-Charge Indicator With Run-Time Display

bq78412
www.ti.com
SLUSAA0 – OCTOBER 2010
CURRENT CONSUMPTION
OPERATING MODE
TYPICAL (mA)
NOTES
Active
3.2
Connected to UPS and gas gauging active. Display is active and not included.
Idle
3.2
Not connected to UPS. Display is active and not included.
Sleep
3.2
Not connected. Display off.
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
REG33 load regulation
ADC basic resolution
100 µA ≤ I_LOAD ≤ 100 mA, T_J = 25°C
100 µA ≤ I_LOAD ≤ 100 mA, –40°C ≤ T_J ≤ 85°C
Sense voltage measurement step size
Shunt current measurement step size
Full scale current sense voltage range
Sense resistor
MIN TYP MAX UNIT
0.04% 0.20%
0.30%
12
bits
4
mV
0.1
A
±160
mV
1
mΩ
Package Outline
DDW Package
(Top View)
N/C
1
44
SCLK
2
43
SDAT
3
42
N/C
4
41
SDA
5
40
SCL
6
39
SD
7
38
TXD
8
37
RXD
9
36
BUZZER
10
35
N/C
11
34
N/C
12
33
N/C
13
32
AVDD
14
31
AVSS
15
30
VS
16
29
RS–
17
28
RS+
18
27
N/C
19
26
N/C
20
25
A0
21
24
A1
22
23
A. Thermal pad is on the bottom side of the package
B. N/C = no connect
RST_N
XIN
XOUT
DVSS
RSVD
DVDD
TEST5
TEST4
TEST3
TEST2
TEST1
N/C
DISPEN
RSVD
N/C
AVSS
REG33
N/C
N/C
VBAT+
SCL
SDA
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