Datasheet

Viset
Vchg
V_0.1 _OUTW
Vout
BatteryDeclared Absent
t-time-20ms/div
100mV/div
1V/div
1V/div
5V/div
Viset
Vchg
Vout
V_0.1 _OUTW
Battery
Threshold
Reached
t-time-500ms/div
1V/div
5V/div
1V/div
100mV/div
Viset
Vchg
Vout
V_0.1 _OUTW
I ClampedCurrent
OUT
I ShortDetected
andLatchedOff
SET
t-time-200 s/divm
1V/div
2V/div
500mV/div
100mV/div
Vin
Viset
Vchg
V_0.1 _OUTW
t-time-1ms/div
2V/div
2V/div
20mV/div
500mV/div
Vin
Viset
Vchg
V_0.1 _OUTW
ShortDetectedin100mA
modeandLatchedOff
t-time-5ms/div
2V/div
2V/div
500mV/div
20mV/div
bq24090, bq24091
bq24092, bq24093
www.ti.com SLUS968A –JANUARY 2010–REVISED FEBRUARY 2010
TYPICAL OPERATIONAL CHARACTERISTICS (continued)
SETUP: bq2409x typical applications schematic; V
IN
= 5V, V
BAT
= 3.6V (unless otherwise indicated)
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)
Figure 8. Battery Charge Profile Figure 9. ISET Shorted During Normal Operation
CH4: Iout (0.2A/Div)
CH4: Iout (0.2A/Div)
Figure 10. ISET Shorted Prior to USB Power-up 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, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Link(s): bq24090 bq24091