LM317
3-TERMINAL ADJUSTABLE REGULATOR
SLVS044H – SEPTEMBER 1997 – REVISED DECEMBER 2001
electrical characteristics over recommended ranges of operating virtual junction temperature
(unless otherwise noted)
PARAMETER
Input voltage (line) regulation‡
VI – VO = 3 V to 40 V
CADJ = 10
µF
§,
µ
TJ = 25°C
TJ = 0°C to 125°C
Thermal regulation
ADJUST terminal current
Change in
ADJUST terminal current
Reference voltage (Vref)
(OUTPUT to ADJUST)
Output-voltage
temperature stability
Minimum load current
to maintain regulation
Peak output current
Output noise voltage (RMS)
Ripple rejection
Long-term stability
VI – VO = 2.5 V to 40 V, PD
≤
20 W, IO = 10 mA to 1500 mA
VI – VO = 3 V to 40 V, PD
≤
20 W, IO = 10 mA to 1500 mA
TJ = 0°C to 125°C
VI – VO = 40 V
VI – VO
≤
15 V,
PD
<
PMAX (see Note 1)
VI – VO
≤
40 V, PD
<
PMAX (see Note 1), TJ = 25°C
f = 10 H
Z
to 10 kH
Z
,
VO = 10 V,
V
TJ = 25°C
f = 120 H
Z
CADJ = 0
µF
§
CADJ = 10
µF
§
62
1.5
0.15
1.2
20-ms pulse,
TJ = 25°C
TEST CONDITIONS†
TJ = 25°C
TJ = 0°C to 125°C
VO
≤
5 V
VO
≥
5 V
VO
≤
5 V
VO
≥
5 V
MIN
TYP
0.01
0.02
0.1
20
0.3
0.03
50
0.2
1.25
0.7
3.5
2.2
0.4
0.003
57
64
10
MAX
0.04
0.07
25
0.5
70
1.5
0.07
100
5
1.3
UNIT
%/V
mV
%VO
mV
%VO
%VO/W
µA
µA
V
%VO
mA
A
%VO
dB
Output voltage
g
(load) regulation
IO = 10 mA to 1500 mA
TJ = 25°C
0.3
1 %/1k Hrs
† Unless otherwise noted, the following test conditions apply: |VI – VO| = 5 V and IOMAX = 1.5 A, TJ = 0°C to 125°C. Pulse testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible.
‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
§ CADJ is connected between the ADJUST terminal and GND.
NOTE 4: Maximum power dissipation is a function of TJ(max),
θ
JA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
TI [ TEXAS INSTRUMENTS ]
