bq24072T
bq24075T, bq24079T
SLUS937A –DECEMBER 2009–REVISED APRIL 2010
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TYPICAL CHARACTERISTICS
VIN = 6V, EN1 = 1, EN2 = 0, TA = 25°C, unless otherwise noted.
ADAPTER PLUG-IN
BATTERY CONNECTED
BATTERY DETECTION
BATTERY INSERTED
BATTERY DETECTION
BATTERY REMOVED
RLOAD = 10Ω
VIN
5 V/div
VCHG
VCHG
5 V/div
1 A/div
5 V/div
1 A/div
Charging Initiated
500 mV/div
5 V/div
VBAT
3.6 V
IBAT
IBAT
VPGOOD
2 V/div
500 mA/div
2 V/div
IBAT
Battery
Removed
VBAT
VBAT
Battery Inserted
4 ms/div
Battery Detection Mode
Battery Detection Mode
400 ms/div
400 ms/div
Figure 1.
Figure 2.
Figure 3.
ENTERING AND EXITING
DPPM MODE
ILOAD = 25 mA TO 250 mA,
ICHARGE = 300 mA
ENTERING AND EXITING BATTERY
SUPPLEMENT MODE
ENTERING AND EXITING BATTERY
SUPPLEMENT MODE
RLOAD = 20Ω TO 4.5Ω
bq24072T
ILOAD = 25mA TO 750mA
bq24075T, bq24079T
200 mA/div
500 mA/div
1 A/div
I
IOUT
OUT
I
OUT
500 mA/div
IBAT
Supplement Mode
I
Supplement Mode
500 mV/div
200 mA/div
BAT
500 mA/div
V
OUT
5.5 V
VOUT
I
3.825 V
OUT
200 mV/div
5.5 V
500 mV/div
VBAT
I
BAT
3.6 V
V
Tracking to VBAT +225 mV
BAT
4.1 V
1 ms/div
2 ms/div
2 ms/div
Figure 4.
Figure 5.
Figure 6.
SYSTEM ON/OFF WITH INPUT
CONNECTED
OVP FAULT
CHARGER ON/OFF USING CE
VIN = 5.5V TO 8.5V
VIN = 6V
VCE
V
5 V/div
IN
VSYSOFF
5 V/div
2 V/div
VCHG
5 V/div
1 V/div
V
VOUT
5.5 V
OUT
4.3 V
200 mV/div
2 V/div
V
VBAT
BAT
VBAT
4 V
4.2 V
3.6 V
Mandatory Precharge
500 mA/div
500 mA/div
I
IBAT
BAT
500 mA/div
IBAT
400 ms/div
10 ms/div
40 ms/div
Figure 7.
Figure 8.
Figure 9.
10
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