Adjustable Positive Voltage Regulator
LM317
LM317
Typ.
Symbol
Description
Unit
Conditions
Min.
Max.
Minimum Load Current for
Regulation
IL(MIN)
IO(MAX)
eN
-
3.5
10
mA
A
VIN-VOUT=40V
Maximum Output Current
0.3
-
0.4
-
-
VIN-VOUT=40V, PD≤20W
10Hz≤f≤10KHz
RMS Noise vs. %of VOUT
0.003
%/VOUT
CADJ=0
-
65
80
-
-
Ripple
Rejection
RR
dB
VOUT=10V, f=120Hz
CADJ=10µF
66
Note: CADJ is connected between Adjust pin and Ground.
Typical Characteristics Curves
Fig.2- Adjustment Current vs. Temperature
Fig.1- Load Regulation vs. Temperature
Temperature (° C)
Temperature (° C)
Fig.4- Minimum Operating Current
Fig.3- Current Limit
VIN-VOUT (V)
VIN-VOUT (V)
Rev. A/DX 2007-06-04
Page 4 of 8
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