BQ24765_15 Datasheet, PDF (12/43 Pages) Texas Instruments – SMBus-Controlled Multi-Chemistry Battery Charger With Integrated Power MOSFETs

bq24765
SLUS999A – NOVEMBER 2009 – REVISED NOVEMBER 2015
7.7 Typical Characteristics
0.40
0.20
0.00
-0.20
DCIN = 20 V
-0.40
-0.60
DCIN = 10 V
-0.80
-1.00
0
5 10 15 20 25 30 35 40
I_LOAD - Load Current - mA
Figure 2. VREF Load and Line Regulation vs Load Current
0.02
0.00
Vreg = 12.592V
-0.02
-0.04
-0.06
-0.08
-0.10
-0.12
-0.14
-0.16
-0.18
-0.20
0 1k 2k 3k 4k 5k 6k 7k 8k 9k
Current Setpoint - mA
Figure 4. VFB Voltage Regulation Accuracy vs Charge
Current
12.0
10.0
8.0
6.0
4.0
2.0
0.0
0 1k 2k 3k 4k 5k 6k 7k 8k
ICHG DAC Set Point - mA
Figure 6. Charge Current Regulation Accuracy vs V(CSOP-
CSON) Voltage Set Point
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0.00
-0.50
-1.00
DCIN = 20 V
-1.50 _{DCIN = 10 V}
-2.00
-2.50
-3.00
0
20
40
60
80
100
I_LOAD - Load Current - mA
Figure 3. VDDP Load and Line Regulation vs Load Current
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
0
5000 10000 15000
VREG DAC Set Point - mV
Figure 5. VFB Voltage Regulation Accuracy vs Set Point
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
Vbat_dac = 12.592V, Ichrg_dac = 4.096A
Actual regulation: Ichrg = 220mA at VFB<2.5V
Ichrg = 3A max at 2.5V<VFB<4V
Ichrg = 4.096A at VFB>4V
2 4 6 8 10 12 14
Battery Voltage - V
Figure 7. Charge Current Regulation vs VFB Voltage
12
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