BQ29209-Q1 Datasheet, PDF (6/23 Pages) Texas Instruments – Voltage Protection with Automatic Cell Balance

bq29209-Q1
SLUSC62A – JUNE 2015 – REVISED MARCH 2016
www.ti.com
7.6 Recommended Cell Balancing Configurations
Typical values stated where T_A = 25°C and (VC2–VC1), (VC1–GND) = 3.8 V. Minimum and maximum values stated where
T_A = –40°C to 105°C, VDD = 4 V to 10 V, and (VC2–VC1), (VC1–GND) = 3 V to 4.2 V. All values assume recommended
supply voltage filter resistance R_VD of 100 Ω and 5% accurate or better cell balance resistor R_CB.
MIN NOM MAX UNIT
R_CB = 4700 Ω
R_CB = 2200 Ω
R_CB = 910 Ω
I_CB
Cell balance input current R_CB = 560 Ω
R_CB = 360 Ω
R_CB = 240 Ω
R_CB = 120 Ω
0.5 0.75
1
1 1.5
2
2
3
4
3 4.5
6 mA
3.5
6 8.5
4 7.5 11
5 10 15
7.7 Typical Characteristics
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-40
80
75
70
65
60
55
50
45
-20
0
20 40 60 80
Temperature (qC)
Figure 1. I_CD Charge Current
3.3
100
D001
40
-40
-20
0
20 40 60 80
Temperature (qC)
Figure 2. I_CD Discharge Current
100
D002
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
-40
0
25
60
110
Operating Temperature (ƒC)
C002
Figure 3. Average ICC During Normal Operation Across Operational Temperature
6
Submit Documentation Feedback
Product Folder Links: bq29209-Q1
Copyright © 2015–2016, Texas Instruments Incorporated