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LM317MDTX/NOPB Scheda tecnica(PDF) 6 Page - Texas Instruments

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Il numero della parte LM317MDTX/NOPB
Spiegazioni elettronici  Wide Temperature Three-Pin Adjustable Regulator
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LM317MDTX/NOPB Scheda tecnica(HTML) 6 Page - Texas Instruments

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LM117, LM317-N
SNVS774P – MAY 2004 – REVISED OCTOBER 2015
www.ti.com
7.5 Thermal Information, LM317-N
LM317-N
KTT
NDE
DCY
NDT
NDP
THERMAL METRIC(1)(2)
UNIT
(TO-263)
(TO-220)
(SOT-223)
(TO)
(TO-252)
3 PINS
3 PINS
4 PINS
3 PINS
3 PINS
RθJA
Junction-to-ambient thermal resistance
41.0
23.3
59.6
186(3)
54
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
43.6
16.2
39.3
21
51.3
°C/W
RθJB
Junction-to-board thermal resistance
23.6
4.9
8.4
28.6
°C/W
ψJT
Junction-to-top characterization parameter
10.4
2.7
1.8
3.9
°C/W
ψJB
Junction-to-board characterization parameter
22.6
4.9
8.3
28.1
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
0.9
1.1
0.9
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
(2)
When surface mount packages are used (SOT-223, TO-252), the junction to ambient thermal resistance can be reduced by increasing
the PCB copper area that is thermally connected to the package. See Heatsink Requirements for heatsink techniques.
(3)
No heatsink
7.6 LM117 Electrical Characteristics
Some specifications apply over full Operating Temperature Range as noted. Unless otherwise specified, TJ = 25°C, VIN
VOUT = 5 V, and IOUT = 10 mA.
(1) (2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
3 V
≤ (VIN − VOUT) ≤ 40 V,
Reference voltage
1.2
1.25
1.3
V
10 mA
≤ IOUT ≤ IMAX
(1) (over full operating temperature range)
TJ = 25°C
0.01
0.02
Line regulation
3 V
≤ (VIN − VOUT) ≤ 40 V
(3)
%/V
over full operating
0.02
0.05
temperature range
TJ = 25°C
0.1%
0.3%
Load regulation
10 mA
≤ IOUT ≤ IMAX
(1) (3)
over full operating
0.3%
1%
temperature range
Thermal regulation
20-ms pulse
0.03
0.07
%/W
Adjustment pin current
over full operating temperature range
50
100
μA
10 mA
≤ IOUT ≤ IMAX
(1)
Adjustment pin current change
0.2
5
μA
3 V
≤ (VIN − VOUT) ≤ 40 V (over full operating temperature range)
Temperature stability
TMIN ≤ TJ ≤ TMAX (over full operating temperature range)
1%
Minimum load current
(VIN − VOUT) = 40 V (over full operating temperature range)
3.5
5
mA
TO-3 Package (over full
1.5
2.2
3.4
operating temperature range)
(VIN − VOUT) ≤ 15 V
A
TO-39 Package (over full
0.5
0.8
1.8
Current limit
operating temperature range)
TO-3 package
0.3
0.4
(VIN − VOUT) = 40 V
A
TO-39 package
0.15
0.2
RMS output noise, % of VOUT
10 Hz
≤ f ≤ 10 kHz
0.003%
VOUT = 10 V, f = 120 Hz, CADJ = 0 μF (over full operating
65
dB
temperature range)
Ripple rejection ratio
VOUT = 10 V, f = 120 Hz, CADJ = 10 μF (over full operating
66
80
dB
temperature range)
Long-term stability
TJ = 125°C, 1000 hrs
0.3%
1%
(1)
IMAX = 1.5 A for the NDS (TO-3), NDE (TO-220), and KTT (TO-263) packages. IMAX = 1.0 A for the DCY (SOT-223) package.
IMAX = 0.5 A for the NDT (TO) and NDP (TO-252) packages. Device power dissipation (PD) is limited by ambient temperature (TA),
device maximum junction temperature (TJ), and package thermal resistance (θJA). The maximum allowable power dissipation at any
temperature is : PD(MAX) = ((TJ(MAX) – TA) / θJA). All Min. and Max. limits are ensured to TI's Average Outgoing Quality Level (AOQL).
(2)
Specifications and availability for military and space grades of LM117/883 can be found in the LM117QML data sheet (SNVS356).
Specifications and availability for military and space grades of LM117 can be found in the LM117JAN data sheet (SNVS365).
(3)
Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specifications for thermal regulation.
6
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