Datasheet

LM117/217/317
4/15
Table 5: Electrical Characteristics For LM317 (V
I
- V
O
= 5 V, I
O
= 500 mA, I
MAX
= 1.5 A and
P
MAX
= 20 W, T
J
= 0 to 125°C, unless otherwise specified).
(*) C
ADJ
is connected between pin 1 and ground.
Figure 4: Output Current vs Input-output
Differential Voltage
Figure 5: Dropout Voltage vs Junction
Temperature
Symbol Parameter Test Conditions Min. Typ. Max. Unit
∆V
O
Line Regulation V
I
- V
O
= 3 to 40 V T
J
= 25°C 0.01 0.04 %/V
0.02 0.07
∆V
O
Load Regulation V
O
≤ 5 V
I
O
= 10 mA to I
MAX
T
J
= 25°C 5 25 mV
20 70
V
O
≥ 5 V
I
O
= 10 mA to I
MAX
T
J
= 25°C 0.1 0.5 %
0.3 1.5
I
ADJ
Adjustment Pin Current 50 100 µA
∆I
ADJ
Adjustment Pin Current V
I
- V
O
= 2.5 to 40 V I
O
= 10 mA to I
MAX
0.2 5 µA
V
REF
Reference Voltage
(between pin 3 and pin 1)
V
I
- V
O
= 2.5 to 40 V I
O
= 10 mA to I
MAX
P
D
≤ P
MAX
1.21.251.3 V
∆V
O
/V
O
Output Voltage
Temperature Stability
1%
I
O(min)
Minimum Load Current V
I
- V
O
= 40 V 3.5 10 mA
I
O(max)
Maximum Load Current V
I
- V
O
≤ 15 V P
D
< P
MAX
1.5 2.2 A
V
I
- V
O
= 40 V P
D
< P
MAX
T
J
=25°C
0.4
eN Output Noise Voltage
(percentage of V
O
)
B = 10Hz to 100KHz T
J
= 25°C 0.003 %
SVR Supply Voltage Rejection (*) T
J
= 25°C f = 120Hz C
ADJ
=0 65 dB
C
ADJ
=10µF 66 80