Datasheet

LM317M
SLVS297P –APRIL 2000–REVISED MARCH 2014 www.ti.com
6.4 Thermal Information
LM317M
THERMAL METRIC
(1)
DCY UNIT
4 TERMINALS
R
θJA
Junction-to-ambient thermal resistance 60.2
R
θJCtop
Junction-to-case (top) thermal resistance 42.0
R
θJB
Junction-to-board thermal resistance 9.4
°C/W
ψ
JT
Junction-to-top characterization parameter 3.4
ψ
JB
Junction-to-board characterization parameter 9.3
R
θJCbot
Junction-to-case (bottom) thermal resistance n/a
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics
over recommended operating virtual-junction temperature range, V
I
– V
O
= 5 V, I
O
= 0.1 A (unless otherwise noted)
PARAMETER TEST CONDITIONS
(1)
MIN TYP MAX UNIT
T
J
= 25°C 0.01 0.04
Line regulation
(2)
V
I
– V
O
= 3 V to 40 V %/V
Full temperature range 0.02 0.07
T
J
= 25°C 0.1 0.5
Load regulation I
O
= 10 mA to 500 mA %V
O
Full temperature range 0.3 1.5
ADJUST terminal current 50 100 μA
V
I
– V
O
= 3 V to 40 V,
Change in ADJUST terminal current 0.2 5 μA
I
O
= 10 mA to 500 mA
V
I
– V
O
= 3 V to 40 V,
Reference voltage 1.2 1.25 1.3 V
I
O
= 10 mA to 500 mA
Output-voltage temperature stability 0.7 %
Minimum load current
3.5 10 mA
to maintain regulation
V
I
– V
O
≤ 15 V 500 900
Maximum output current mA
V
I
– V
O
= 40 V, P
D
≤ P
D(max)
, T
J
= 25°C 150 250
RMS output noise voltage (% of V
O
) f = 10 Hz to 10 kHz, T
J
= 25°C 0.003 %V
O
C
ADJ
= 0
(3)
65
V
O
= 10 V, f = 120 Hz,
Ripple rejection dB
T
J
= 25°C
C
ADJ
= 10 μF
(3)
66 80
Long-term stability T
J
= 25°C 0.3 1 %/1k hrs
(1) Pulse-testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible.
(2) Line voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
(3) CADJ is connected between the ADJUST terminal and ground.
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