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BQ24090 Datasheet, PDF (10/31 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion Battery Charger | |||
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bq24090, bq24091
bq24092, bq24093
SLUS968A â JANUARY 2010 â REVISED FEBRUARY 2010
www.ti.com
TYPICAL OPERATIONAL CHARACTERISTICS
SETUP: bq2409x typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated)
POWER UP, DOWN, OVP, DISABLE AND ENABLE WAVEFORMS
Vin
5V/div
Vin
5V/div
Vchg
2V/div
Vpg
2V/div
Vchg
Viset
2V/div
Vpg 2V/div
2V/div
Viset 2V/div
t - time - 20ms/div
Figure 1. OVP 8V Adaptor - Hot Plug
t - time - 100ms/div
Figure 2. OVP from Normal Power-up
Operation â VIN 0V â 5V â 6.8V â5V
10k⦠resistor from TS to GND. 10k⦠is shorted to disable the IC.
Fixed 10k⦠resistor, between TS and GND.
Vpg 2V/div
Vchg
2V/div
Vpg 5V/div
Vchg
2V/div
Vout
Vts
Viset
2V/div
500mV/div
t - time - 50ms/div
Figure 3. TS Enable and Disable
2V/div
Battery Detect Mode
Vin
5V/div
t - time - 20ms/div
Figure 4. Hot Plug Source w/No Battery â Battery Detection
Vin
2V/div
Vout
500mV/div
Viset 1V/div
Vts
2V/div
t - time - 5ms/div
Figure 5. Battery Removal â GND Removed 1st, 42 ⦠Load
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 ⦠Load
Continuous battery detection when not in TTDM.
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Product Folder Link(s): bq24090 bq24091
Copyright © 2010, Texas Instruments Incorporated
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