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LM317SX/NOPB bảng dữ liệu(PDF) 6 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LM117/LM317A/LM317-N Three-Terminal Adjustable Regulator
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LM117, LM317A, LM317-N
SNVS774O – MAY 2004 – REVISED JANUARY 2014
www.ti.com
LM317A and LM317-N ELECTRICAL CHARACTERISTICS
(1)
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating
Temperature Range. Unless otherwise specified, VIN − VOUT = 5V, and IOUT = 10 mA.
LM317A
LM317-N
Parameter
Conditions
Unit
Min
Typ
Max
Min
Typ
Max
s
1.238
1.250
1.262
-
1.25
-
V
Reference Voltage
3V
≤ (VIN − VOUT) ≤ 40V,
1.225
1.250
1.270
1.20
1.25
1.30
V
10 mA
≤ IOUT ≤ IMAX
(1)
0.005
0.01
0.01
0.04
Line Regulation
3V
≤ (VIN − VOUT) ≤ 40V
(2)
%/V
0.01
0.02
0.02
0.07
0.1
0.5
0.1
0.5
Load Regulation
10 mA
≤ IOUT ≤ IMAX
(1) (2)
%
0.3
1
0.3
1.5
Thermal Regulation
20 ms Pulse
0.04
0.07
0.04
0.07
%/W
Adjustment Pin Current
50
100
50
100
μA
Adjustment Pin Current
10 mA
≤ IOUT ≤ IMAX
(1)
0.2
5
0.2
5
μA
Change
3V
≤ (VIN − VOUT) ≤ 40V
Temperature Stability
TMIN ≤ TJ ≤ TMAX
1
1
%
Minimum Load Current
(VIN − VOUT) = 40V
3.5
10
3.5
10
mA
NDS, KTT Packages
-
-
-
1.5
2.2
3.4
(VIN − VOUT) ≤ 15V
DCY, NDE Packages
1.5
2.2
3.4
1.5
2.2
3.4
A
NDT Package
0.5
0.8
1.8
0.5
0.8
1.8
Current Limit
NDS, KTT Packages
-
-
0.15
0.40
(VIN − VOUT) = 40V
DCY, NDE Packages
0.15
0.40
0.15
0.40
A
NDT Package
0.075
0.20
0.075
0.20
RMS Output Noise, % of
10 Hz
≤ f ≤ 10 kHz
0.003
0.003
%
VOUT
VOUT = 10V, f = 120 Hz, CADJ = 0 μF
65
65
dB
Ripple Rejection Ratio
VOUT = 10V, f = 120 Hz, CADJ = 10 μF
66
80
66
80
dB
Long-Term Stability
TJ = 125°C, 1000 hrs
0.3
1
0.3
1
%
NDS (TO-3) Package
-
2
NDE (TO-220) Package
4
4
KTT (TO-263) Package
-
4
Thermal Resistance,
θJC
°C/W
Junction-to-Case
DCY (SOT-223) Package
23.5
23.5
NDT (TO) Package
21
21
NDP (TO-252) Package
12
12
-
39
NDS (TO-3) Package
50
50
NDE (TO-220) Package
Thermal Resistance,
θJA
KTT (TO-263) Package (3)
-
50
Junction-to-Ambient
°C/W
DCY (SOT-223) Package (3)
140
140
(No Heat Sink)
NDT (TO) Package
186
186
NDP (TO-252) Package (3)
103
103
(1)
IMAX = 1.5A for the NDS (TO-3), NDE (TO-220), and KTT (TO-263) packages. IMAX = 1.0A for the DCY (SOT-223) package. IMAX = 0.5A
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)
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.
(3)
When surface mount packages are used (TO-263, SOT-223, TO-252), the junction to ambient thermal resistance can be reduced by
increasing the PC board copper area that is thermally connected to the package. See the APPLICATION HINTS section for heatsink
techniques.
6
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