BQ24090_2 Datasheet, PDF (12/32 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion Battery Charger

bq24090, bq24091
bq24092, bq24093
SLUS968B – JANUARY 2010 – REVISED JUNE 2010
TYPICAL OPERATIONAL CHARACTERISTICS (continued)
SETUP: bq2409x typical applications schematic; V_IN = 5V, V_BAT = 3.6V (unless otherwise indicated)
Vin 2V/div
Vout
Vin _2V/div
Vchg _2V/div
1V/div
Enters
Thermal
Regulation
Exits
Thermal
Regulation
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500mV/div
20mV/div
Viset
V_0.1W_OUT
t - time - 500ms/div
Figure 12. DPM – USB Current Limits – Vin Regulated to
4.4V
Viset
V_0.1W_OUT
50mV/div
1V/div
t - time - 1s/div
Figure 13. Thermal Reg. – Vin increases PWR/Iout
Reduced
V_IN swept from 5V to 3.9V to 5V, V_BAT = 4V
Vin
1V/div
Vchg
Viset _1V/div
Vpg
5V/div
5V/div
t - time - 20ms/div
Figure 14. Entering and Exiting Sleep Mode
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 16. Line Regulation
546
Kiset
544
542
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
532
530
528
0
.15 0.2
0.4
0.6
0.8
I_O - Output Current - A
Figure 15. K_ISET for Low and High Currents
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 17. Load Regulation Over Temperature
12
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