BQ24090_12 Datasheet, PDF (11/34 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger

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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)
Vout
1V/div
Vchg
5V/div
Battery Declared Absent
Viset
1V/div
V_0.1 W_OUT
100mV/div
t - time - 20ms/div
Figure 7. Battery Removal with fixed TS = 0.5V
PROTECTION CIRCUITS WAVEFORMS
CH4: Iout (1A/Div)
Battery voltage swept from 0V to 4.25V to 3.9V.
CH4: Iout (1A/Div)
Vout
1V/div
Vchg
5V/div
Viset
1V/div
Battery
Threshold
Reached
V_0.1 W_OUT
100mV/div
t - time - 500ms/div
Figure 8. Battery Charge Profile
CH4: Iout (0.2A/Div)
CH4: Iout (0.2A/Div)
Vchg
2V/div
Vin
2V/div
Viset
500mV/div
20mV/div
Short Detected in 100mA
mode and Latched Off
V_0.1 W_OUT
t - time - 5ms/div
Figure 10. ISET Shorted Prior to USB Power-up
Vout _1V/div
500mV/div
Viset
Vchg 2V/div
V_0.1 W_OUT
I_OUT Clamped Current
100mV/div
I_SET Short Detected
and Latched Off
t - time - 200ms/div
Figure 9. ISET Shorted During Normal Operation
Vin
Vchg
2V/div
2V/div
500mV/div
20mV/div
Viset
V_0.1W_OUT
t - time - 1ms/div
Figure 11. DPM – Adaptor Current Limits – Vin Regulated
The IC temperature rises to 125°C and enters thermal regulation. Charge current is reduced to regulate the IC at
125°C. VIN is reduced, the IC temperature drops, the charge current returns to the programmed value.
Copyright © 2010–2012, Texas Instruments Incorporated
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