TC4949 查看數據表（PDF） - TelCom Semiconductor Inc => Microchip
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TC4949 Datasheet PDF : 9 Pages
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Multifunction Very Low Dropout Voltage Regulator
TC4949
TYPICAL CHARACTERISTICS
Figure 3. Dropout Voltage versus
Output Current
250
TJ = 25°C
200
150
100
50
0
0.1
1.0
10
100
IOUT, OUTPUTCURRENT (mA)
Figure 5. Quiescent Current versus
Output Current
3.0
2.5
VCC = 14V
TJ = 25˚C
2.0
1.5
1.0
0.5
0
0.1
1.0
10
100
IOUT, OUTPUT CURRENT (mA)
Figure 7. Reset Output versus
Regulator Output Voltage
6.0
TJ = 25˚C
5.0
RESISTOR 10K
4.0 FROM RESET
OUTPUT TO 5.0V
3.0
2.0
1.0
0
4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0
VOUT, OUTPUT VOLTAGE (V)
Figure 4. Dropout Voltage versus
Junction Temperature
0.40
IOUT = 100mA
0.30
0.20
IOUT = 50mA
IOUT = 10mA
0.10
0
-40 -20 0 20 40 60 80 100 120
TJ, JUNCTION TEMPERATURE (˚C)
Figure 6. Quiescent Current versus
Supply Voltage
3.0
2.5
TJ = 25˚C
2.0
1.5
RL = 100Ω
1.0
0.5
RL = 5.0k
0
0
5.0
10
15
20
25
30
VCC, SUPPLY VOLTAGE (V)
Figure 8. Reset Thresholds versus
Junction Temperature
4.7
4.66
Upper Threshold
4.62
4.58
4.54
4.5
Lower Threshold
4.46
4.42
–40 –20 0 20 40 60 80 100 120
TJ, JUNCTION TEMPERATURE (˚C)
TC4949-1 1/6/00
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