BQ24090_12 Datasheet, PDF (10/34 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
SETUP: bq2409x typical applications schematic; V_IN = 5V, V_BAT = 3.6V (unless otherwise indicated)
POWER UP, DOWN, OVP, DISABLE AND ENABLE WAVEFORMS
Vin
5V/div
Vin
5V/div
Vchg
Vpg
2V/div
2V/div
Vchg
Viset
2V/div
Vpg _2V/div
2V/div
Viset _2V/div
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t - time - 20ms/div
Figure 1. OVP 8V Adaptor - Hot Plug
t - time - 100ms/div
Figure 2. OVP from Normal Power-up
Operation – V_IN 0V → 5V → 6.8V →5V
10kΩ resistor from TS to GND. 10kΩ is shorted to disable the IC.
Fixed 10kΩ resistor, between TS and GND.
Vpg _2V/div
Vchg
2V/div
Vts
Viset
2V/div
500mV/div
t - time - 50ms/div
Figure 3. TS Enable and Disable
Vpg _5V/div
Vchg
2V/div
Vout
2V/div
Battery Detect Mode
Vin
5V/div
t - time - 20ms/div
Figure 4. Hot Plug Source w/No Battery – Battery Detection
Vin
2V/div
Vout
500mV/div
Viset _1V/div
Vts
2V/div
t - time - 5ms/div
Figure 5. Battery Removal – GND Removed 1st, 42 Ω Load
NOTE: Continuous battery detection when not in TTDM.
Vout
Vchg
Viset
1 Battery Detect Cycle
1V/div
5V/div
1V/div
Vts
1V/div
Entered TTDM
t - time - 10ms/div
Figure 6. Battery Removal with OUT and
TS Disconnect 1st, With 100 Ω Load
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