Datasheet

V
IN
500mV/div
4ms/div
5V/div
I
BAT
V
PGOOD
5V/div
V
3.6V
BAT
500mA/div
V
CHG
I
BAT
2V/div
400ms/div
V
BAT
1 A/div
5V/div
Battery
Removed
BatteryDetectionMode
V
CHG
I
BAT
2V/div
400 ms/div
V
BAT
1 A/div
5V/div
ChargingInitiated
BatteryDetectionMode
BatteryInserted
I
OUT
I
BAT
V
3.6V
BAT
500mA/div
200mV/div
1ms/div
V
3.825V
OUT
1 A/div
SupplementMode
TrackingtoV +225mV
BAT
I
OUT
I
BAT
200mA/div
2 ms/div
V
OUT
5.5V
500mV/div
200mA/div
2ms/div
I
OUT
I
BAT
V
4.1V
BAT
I
5.5V
OUT
500mA/div
500mV/div
500mA/div
SupplementMode
5V/div
2V/div
400 s/divm
500mA/div
V
SYSOFF
I
BAT
V
4V
BAT
V
5.5V
OUT
V
CE
I
BAT
V
3.6V
BAT
V
CHG
500mA/div
1V/div
5V/div
5V/div
10ms/div
MandatoryPrecharge
2V/div
200mV/div
500mA/div
40 s/divm
V
IN
I
BAT
V
4.2V
BAT
V
4.3V
OUT
bq24072T
bq24075T, bq24079T
SLUS937A –DECEMBER 2009–REVISED APRIL 2010 www.ti.com
TYPICAL CHARACTERISTICS
V
IN
= 6V, EN1 = 1, EN2 = 0, T
A
= 25°C, unless otherwise noted.
ADAPTER PLUG-IN
BATTERY CONNECTED BATTERY DETECTION BATTERY DETECTION
R
LOAD
= 10Ω BATTERY INSERTED BATTERY REMOVED
Figure 1. Figure 2. Figure 3.
ENTERING AND EXITING ENTERING AND EXITING BATTERY ENTERING AND EXITING BATTERY
DPPM MODE SUPPLEMENT MODE SUPPLEMENT MODE
I
LOAD
= 25 mA TO 250 mA, I
LOAD
= 25mA TO 750mA R
LOAD
= 20Ω TO 4.5Ω
I
CHARGE
= 300 mA bq24075T, bq24079T bq24072T
Figure 4. Figure 5. Figure 6.
SYSTEM ON/OFF WITH INPUT
OVP FAULT CONNECTED
CHARGER ON/OFF USING CE V
IN
= 5.5V TO 8.5V V
IN
= 6V
Figure 7. Figure 8. Figure 9.
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Product Folder Link(s): bq24072T bq24075T bq24079T