BQ24090_12 Datasheet, PDF (12/34 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger

bq24090, bq24091
bq24092, bq24093
bq24095
SLUS968D – JANUARY 2010 – REVISED DECEMBER 2012
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
546
K_iset
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
4.193
V_reg @ 0°C
4.192
0
0.2
0.4
0.6
0.8
1
I_O - Output Current - A
Figure 16. Load Regulation Over Temperature
4.360
4.358
V_reg @ 85°C
4.356
4.354
4.352
4.350
V_reg @ 25°C
4.348
4.346
4.344
4.342
V_reg @ 0°C
4.340
0
0.2
0.4
0.6
0.8
1
I_O - Output Current - A
Figure 17. Load Regulation – bq24095
12
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