BQ24085 Datasheet, PDF (7/34 Pages) Texas Instruments – 750 mA SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC WITH THERMAL REGULATION

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www.ti.com .................................................................................................................................................... SLUS784B – DECEMBER 2007 – REVISED MAY 2008
TYPICAL OPERATING CHARACTERISTICS
Measured using the typical application circuit shown previously.
THERMAL REGULATION
450
400
350
300
250
200
150
100
50
0
0
40
80
120
160
Die Temperature (^oC)
Figure 1.
INPUT OVP RECOVERY TRANSIENTS
8
800
7
700
6
VIN
600
5
500
4
400
3
IBAT
300
2
200
VPG
1
100
0
0
0 5 10 15 20 25 30 35 40 45 50
t - Time - mS
Figure 3.
PRE-CHARGE CURRENT
vs
BATTERY VOLTAGE
40.5
40.45
40.4
40.35
40.3
85°C
40.25
40.2
25°C
40.15
0°C
40.1
40.05
40
2
2.20 2.40 2.60 2.80
3
Battery Voltage - V
Figure 5.
DTC OPERATION
25
20
15
10
5
0
0 50 100 150 200 250 300 350 400 450
Actual Charge Current
due to thermal regulation - mA
Figure 2.
PG DEGLITCH TIME
VIN
PG
t - Time - ms
Figure 4.
FAST-CHARGE CURRENT
vs
BATTERY VOLTAGE
405
404
403
402
25°C
401
0°C
400
399
85°C
398
397
396
395
3
3.20 3.40 3.60 3.80
4
Battery Voltage - V
Figure 6.
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