BQ24765_15 Datasheet, PDF (12/37 Pages) Texas Instruments – SMBus-Controlled Multi-Chemistry Battery Charger With Integrated Power MOSFETs

bq24765
SLUS999 – NOVEMBER 2009
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TYPICAL CHARACTERISTICS (continued)
100
EFFICIENCY
vs
BATTERY CHARGE CURRENT
INPUT CURRENT REGULATION (DPM) ACCURACY
vs
V(CSSP-CSSN) VOLTAGE SET POINT
2.0
95
1.5
90
4c _23c
2c
85
1.0
80
75
70
0
Vbat_dac = 12.592,
In voltage regulation
1k 2k 3k 4k 5k 6k
ICHG DAC Set Point - mA
Figure 9.
VICM INPUT CURRENT SENSE AMPLIFIER ACCURACY
vs
V(CSSP-CSSN) VOLTAGE
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
0
2000 4000 6000 8000 10000 12000
DPM DAC Set Point - mA
Figure 11.
0.5
0.0
0
2k 4k 6k 8k 10k 12k
DPM DAC Set Point - mA
Figure 10.
INPUT REGULATION CURRENT (DPM), AND CHARGE
CURRENT
vs
SYSTEM CURRENT
6
Input Current 4608mA
5
4
3
2
1
Charge Current 4096mA
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
System Current - A
Figure 12.
12
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