LP3910 Datasheet, PDF (17/72 Pages) Texas Instruments – Power Management IC for Hard-Drive-Based Portable Media Players

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Battery-Charger Characteristics (continued)
540
520
0°C
500
25°C
480
125°C
460
440
4.0
4.5
5.0
5.5
6.0
CHG_DET (V)
V_BATT = 3.5 V, CC
Figure 7. ICHG vs CHG_DET
55.0
53.0
51.0
49.0
47.0
45.0
0 25 50 75 100 125 150
JUNCTION TEMPERATURE (°C)
V_BATT = 3.75 V, Prequal CHG_DET = 5 V
Figure 9. ICHG vs Temperature
520
500
480
460
440
420
0
25 50 75 100 125 150
JUNCTION TEMPERATURE (°C)
Figure 11. USB I_LIMIT vs Temperature
LP3910
SNVS481M – NOVEMBER 2006 – REVISED DECEMBER 2015
540
520
500
480
460
440
0
25 50 75 100 125 150
JUNCTION TEMPERATURE (°C)
V_BATT = 3.75 V, CC
CHG_DET = 5 V
Figure 8. ICHG vs Temperature
600
500
400
300
Active Thermal Regulation
200
100
0
80
90 100 110 120 130
JUNCTION TEMPERATURE (°C)
Figure 10. Thermal Regulation of Charge Current
Ch1 = Charge Current (mA)
Ch3 = CHG_DET (V)
Ch4 = USBPWR (V)
Figure 12. Wall Adapter Insertion With USBPWR Present
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