LM317(2001) View Datasheet(PDF) - Vishay Semiconductors
Part Name
Description
Manufacturer
LM317 Datasheet PDF : 6 Pages
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Part Number
Vishay Semiconductor
Electrical Characteristics – LM317
Vi -Vo = 5V, Io = 0.5A, TJ = Tlow to Thigh (see Note 1), Imax and Pmax per Note 2, unless otherwise noted.
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Line Regulation (Fig. 1)(3)
3.0V ≤ VI – Vo ≤ 40V
Load Regulation (Fig. 2)(3)
TJ = 25°C, 10mA ≤ Io ≤ 1.5A
Load Regulation (Fig. 2)(3)
10mA ≤ Io ≤ 1.5A
REGline
REGload
REGload
TA = 25°C
TJ = 0°C thru 125°C
Vo ≤ 5.0
Vo ≥ 5.0
Vo ≤ 5.0
Vo ≥ 5.0
–
0.01 0.04
%Vo/V
–
0.02 0.07
–
5
25
mV
–
0.1
0.5 %Vo
–
20
70
mV
–
0.3
1.5 %Vo
Thermal Regulation
Adjustment Pin Current (Fig. 3)
Adjustment Pin Current Change
Reference Voltage (Fig. 3)(4)
Temperature Stability (Fig. 3)
REGtherm
IAdj
∆IAdj
Vref
TS
TJ = 25°C, 20ms Pulse
10mA ≤ IL ≤ 1.5A
2.5V ≤ VI – Vo ≤ 40V
10mA ≤ Io ≤ 1.5A
3V ≤ VI – Vo ≤ 40V
Tlow ≤ TJ ≤ Thigh
–
–
–
1.225
–
0.03
50
0.2
1.25
1
0.07 %Vo/W
100
µA
5
µA
1.275 V
–
%Vo
Min. Load Current to Maintain Regulation (Fig. 3)
Maximum Output Current (Fig. 3)
RMS Noise, % of Vo
Ripple Rejection (Fig. 4)
Long-Term Stability (after 1000 hr) Fig. 3
ILmin
Imax
N
RR
S
VI – Vo = 40V
–
3.5
10
VI – Vo ≤ 15V
1.5
2.2
–
VI – Vo = 40V, TJ = 25°C 0.15 0.4
–
TJ = 25°C, 10HZ ≤ f ≤ 10KHZ — 0.003 –
Vo = 10V, f = 120HZ(5)
—
65
–
CAdj = 10µF
66
80
–
TJ = 125°C(6), TJ = 25°C for –
Endpoint Measurements
0.3
1.0
mA
A
%Vo
dB
%
Thermal Resistance Junction to Case
RθJC
Tlow ≤ TJ ≤ Thigh
–
5.0
– °C/W
Notes:
(1) Tlow = 0°C Thigh = 125°C
(2) Imax = 1.5A Pmax : TO-220 = 2W, TO-263 = 2W
(3) Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
(4) Selected devices with tightened tolerance reference voltage available.
(5) CAdj, when used, is connected between the addjustment pin and ground.
(6) Since Long-Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot.
www.vishay.com
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Document Number 74809
29-Nov-01
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