BQ24040 Datasheet, PDF (13/31 Pages) Texas Instruments – 800mA Single-Input Single Cell Li-Ion Battery Charger With Auto Start

bq24040
bq24041
www.ti.com.................................................................................................................................... SLUS941A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009
TYPICAL OPERATIONAL CHARACTERISTICS (continued)
SETUP: bq24040 typical applications schematic; V_IN = 5V, V_BAT = 3.6V (unless otherwise indicated)
Vin
1V/div
546
Kiset
544
542
Vchg
Viset _1V/div
Vpg
5V/div
5V/div
540
Low to High Currents
(may occur in recharge to fast charge transion)
538
536
High to Low Currents
(may occur in Voltage Regulation - Taper Current)
534
t - time - 20ms/div
532
Vin swept from 5V to 3.9V to 5V, Vbat = 4V
530
Figure 18. Entering and Exiting Sleep mode
528
0
.15 0.2
0.4
0.6
0.8
I_O - Output Current - A
Figure 19. Kiset for Low and High Currents
4.212
4.21
V_O @ 0°C
R_{OUT =} 100 Ω
4.208
4.206
4.204
4.202
V_O @ 25°C
V_O @ 85°C
4.2
4.198
4.196
4.5
5
5.5
6
6.5
V_I - Input Voltage DC - V
Figure 20. Line Regulation
4.2
4.199
4.198
4.197
V_reg @ 25°C
V_reg @ 85°C
4.196
4.195
4.194
V_reg @ 0°C
4.193
4.192
0
0.2
0.4
0.6
0.8
1
I_O - Output current - A
Figure 21. Load Regulation Over Temperature
363.4
363.2
363
I_O @ 25°C
362.8
362.6
I_O @ 85°C
362.4
362.2
362
I_O @ 0°C
361.8
2.5
3
3.5
4
4.5
V_O - Output Voltage - V
Figure 22. Current Regulation Over Temperature
Copyright © 2009, Texas Instruments Incorporated
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