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LM317 Fiches technique(PDF) 2 Page - Vishay Siliconix

No de pièce LM317
Description  3-Terminal Adjustable Output Positive Voltage Regulators
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Fabricant  VISHAY [Vishay Siliconix]
Site Internet  http://www.vishay.com
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LM317 Fiches technique(HTML) 2 Page - Vishay Siliconix

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Document Number 74809
2
30-Oct-02
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)
REGline
TA = 25°C
0.01
0.04
%Vo/V
3.0V
≤ VI – Vo ≤ 40V
TJ = 0°C thru 125°C
0.02
0.07
Load Regulation (Fig. 2)(3)
REGload
Vo
≤ 5.0
5
25
mV
TJ = 25°C, 10mA
≤ Io ≤ 1.5A
Vo
≥ 5.0
0.1
0.5
%Vo
Load Regulation (Fig. 2)(3)
REGload
Vo
≤ 5.0
20
70
mV
10mA
≤ Io ≤ 1.5A
Vo
≥ 5.0
0.3
1.5
%Vo
Thermal Regulation
REGtherm
TJ = 25°C, 20ms Pulse
0.03
0.07
%Vo/W
Adjustment Pin Current (Fig. 3)
IAdj
50
100
µA
Adjustment Pin Current Change
∆IAdj
10mA
≤ IL ≤ 1.5A
0.2
5
µA
2.5V
≤ VI – Vo ≤ 40V
Reference Voltage (Fig. 3)(4)
Vref
10mA
≤ Io ≤ 1.5A
1.225
1.25
1.275
V
3V
≤ VI – Vo ≤ 40V
Temperature Stability (Fig. 3)
TS
Tlow
≤ TJ ≤ Thigh
–1–
%Vo
Min. Load Current to Maintain Regulation (Fig. 3)
ILmin
VI – Vo = 40V
3.5
10
mA
Maximum Output Current (Fig. 3)
Imax
VI – Vo
≤ 15V
1.5
2.2
A
VI – Vo = 40V, TJ = 25°C
0.15
0.4
RMS Noise, % of Vo
N
TJ = 25°C, 10HZ
≤ f ≤ 10KHZ
0.003
%Vo
Ripple Rejection (Fig. 4)
RR
Vo = 10V, f = 120HZ
(5)
—65
dB
CAdj = 10
µF66
80
Long-Term Stability (after 1000 hr) Fig. 3
S
TJ = 125°C
(6)
, TJ = 25°C for
0.3
1.0
%
Endpoint Measurements
Thermal Resistance Junction to Case
R
θJC
Tlow
≤ TJ ≤ Thigh
5.0
°C/W
Notes:
(1) Tlow = 0°C Thigh = 125°C
(2) Imax = 1.5A Pmax is internally limited
(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.
LM317
Vishay
formerly General Semiconductor


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