BQ24745_14 Datasheet, PDF (12/39 Pages) Texas Instruments – SMBus-Controlled Multi-Chemistry Battery

bq24745
SLUS761D – DECEMBER 2007 – REVISED OCTOBER 2011
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TYPICAL CHARACTERISTICS (continued)
INPUT CURRENT REGULATION (DPM) ACCURACY
vs
DAC IDPM SETPOINT
VICM INPUT CURRENT-SENSE AMPLIFIER ACCURACY
INPUT CHARGE CURRENT
0
0
-0.2 ^{DCIN = 20 V,}
VFB = 9 V
-0.5
-0.4
-0.6
-1
-0.8
-1.5
-2
-2.5
-3
0
VFB = 9 V,
DCIN = 20 V
2000
4000
6000
8000
DPM Programmed Setpoint - mA
Figure 10.
10000
12000
-1
-1.2
-1.4
-1.6
-1.8
-2
0
2000
4000
6000
8000
DPM Program Value - mA
Figure 11.
10000 12000
INPUT CURRENT REGULATION (DPM)
AND CHARGE CURRENT
vs
SYSTEM CURRENT
6
5
DCIN = 20 V
5
4.5
4
Input Current
4
3
3.5
2
Charge Current
1
3
0
2.5
0
0.5
1
1.5
2
2.5
3
3.5
4
System Current - A
Figure 12.
INPUT CURRENT REGULATION (DPM) TRANSIENT
SYSTEM LOAD RESPONSE
CCM TO CCM
I_(DCIN)
I_LOAD
I_(SYS)
VICM
t − Time = 1 ms/div
Figure 13.
12
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