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SLUS810D – SEPTEMBER 2008 – REVISED JUNE 2009
TYPICAL CHARACTERISTICS
V
IN
= 6V, EN1=1, EN2=0, bq24073 application circuit, T
A
= 25°C, unless otherwise noted.
ADAPTER PLUG-IN
BATTERY CONNECTED
R
LOAD
= 10Ω
V
IN
5 V/div
BATTERY DETECTION
BATTERY INSERTED
V
CHG
Charging Initiated
BATTERY DETECTION
BATTERY REMOVED
V
CHG
5 V/div
5 V/div
V
OUT
4.4 V
500 mV/div
V
BAT
3.6 V
V
PGOOD
5 V/div
1 A/div
I
BAT
1 A/div
I
BAT
I
BAT
4 ms/div
500 mA/div
V
BAT
Battery Detection Mode
2 V/div
Battery Inserted
V
BAT
Battery
Removed
Battery Detection Mode
400 ms/div
2 V/div
400 ms/div
Figure 1.
ENTERING AND EXITING DPPM
MODE
R
LOAD
= 20Ω to 9Ω
Figure 2.
ENTERING AND EXITING BATTERY
SUPPLEMENT MODE
R
LOAD
= 25ΩTO 4.5Ω
bq24074
Figure 3.
ENTERING AND EXITING BATTERY
SUPPLEMENT MODE
R
LOAD
= 20ΩTO 4.5Ω
bq24072
1 A/div
I
OUT
500 mA/div
I
OUT
I
BAT
1 A/div
I
OUT
Supplement Mode
500 mA/div
I
BAT
Supplement Mode
500 mA/div
I
BAT
500 mA/div
V
OUT
3.825 V
200 mV/div
V
OUT
4.4 V
200 mV/div
V
OUT
4.4 V
V
BAT
3.8 V
1 ms/div
500 mV/div
V
BAT
3.6 V
Tracking to V
BAT
+225 mV
1 ms/div
400
m
s/div
Figure 4.
Figure 5.
OVP FAULT
V
IN
= 6V to 15V
R
LOAD
= 10Ω
10 V/div
V
SYSOFF
Figure 6.
SYSTEM ON/OFF WITH INPUT
CONNECTED
V
IN
= 6V
bq24075, bq24079
5 V/div
CHARGER ON/OF USING CE
V
CE
5 V/div
V
IN
V
CHG
5 V/div
1 V/div
V
BAT
3.6 V
V
OUT
4.4 V
V
BAT
4.2 V
V
OUT
5.5 V
2 V/div
500 mV/div
V
BAT
4V
I
BAT
Mandatory Precharge
500 mA/div
I
BAT
500 mA/div
1 A/div
I
BAT
10 ms/div
400
m
s/div
40
m
s/div
Figure 7.
Figure 8.
Figure 9.
Copyright © 2008–2009, Texas Instruments Incorporated
9
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