LM317LD 查看數據表（PDF） - ON Semiconductor
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LM317LD Datasheet PDF : 12 Pages
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14.30V
4.30V
Vin
f = 120 Hz
Cin 0.1mF
LM317L
Vout
LM317L
Adjust
R1
240
1%
Vout = 1.25 V
D1 *
1N4002
CO
+
1mF
RL
VO
R2
1.65K
1%
+
** 10mF
* D1 Discharges CAdj if Output is Shorted to Ground.
**CAdj provides an AC ground to the adjust pin.
Figure 4. Ripple Rejection Test Circuit
0.4
Vin = 45 V
0.2
Vout = 5.0 V
IL = 5.0 mA to 40 mA
0
−0.2
−0.4
Vin = 10 V
Vout = 5.0 V
−0.6
IL = 5.0 mA to 100 mA
−0.8
−1.0
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Load Regulation
0.50
TJ = 25°C
0.40
0.30
0.20
TJ = 150°C
0.10
0
0
10
20
30
40
50
Vin−Vout, INPUT−OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 7. Current Limit
80
70
IL = 40 mA
f = 120 Hz
60
Vout = 10 V
Vin = 14 V to 24 V
50
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Ripple Rejection
2.5
2.0
IL = 100 mA
1.5
IL = 5.0 mA
1.0
0.5
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Dropout Voltage
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