LM317M [TI]
3-TERMINAL ADJUSTABLE REGULATOR; 三端可调稳压器
| 型号： | LM317M |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 3-TERMINAL ADJUSTABLE REGULATOR |
| 文件： | 总11页 (文件大小：183K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
FEATURES
KTP PACKAGE
(TOP VIEW)
•
Output Voltage Range Adjustable From 1.25 V
to 37 V
INPUT
•
•
•
•
•
Output Current Greater Than 500 mA
Internal Short-Circuit Current Limiting
Thermal-Overload Protection
ADJUST
Output Safe-Area Compensation
Q Devices Meet Automotive Performance
Requirements
DCY PACKAGE
(TOP VIEW)
•
Customer-Specific Configuration Control Can
Be Supported for Q Devices Along With
Major-Change Approval
INPUT
OUTPUT
ADJUST
DESCRIPTION/ORDERING INFORMATION
The LM317M is an adjustable 3-terminal positive-voltage regulator capable of supplying more than 500 mA over
an output-voltage range of 1.25 V to 37 V. The LM317M is exceptionally easy to use and requires only two
external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard
fixed regulators.
In addition to having higher performance than fixed regulators, the device includes on-chip current limiting,
thermal-overload protection, and safe-operating-area protection. All overload protection remains fully functional if
the ADJUST terminal is disconnected.
Normally, no capacitors are needed unless the device is more than six inches from the input filter capacitors, in
which case an input bypass capacitor is needed. An optional output capacitor can be added to improve transient
response. The ADJUST terminal can be bypassed to achieve high ripple-rejection ratios, which are difficult to
achieve with standard three-terminal regulators.
ORDERING INFORMATION
TJ
PACKAGE(1)
ORDERABLE PART NUMBER
LM317MKTPR
TOP-SIDE MARKING
LM317M
PowerFLEX™ – KTP
Reel of 2000
0°C to 125°C
Tube of 80
LM317MDCY
SOT – DCY
L4
Reel of 2500
Reel of 2000
LM317MDCYR
PowerFLEX – KTP
SOT – DCY
LM317MQKTPR
317MQ
L5
–40°C to 125°C
LM317MQDCYR
Reel of 2500
LM317MQDCYRG3
L8
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerFLEX is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
Absolute Maximum Ratings(1)
over operating temperature range (unless otherwise noted)
MIN MAX UNIT
VI – VO
TJ
Input-to-output differential voltage
40
V
Operating virtual junction temperature
Lead temperature (within 5 mils of the plastic body for 10 s)
Storage temperature range
150 °C
260 °C
150 °C
KTP, DCY packages
Tstg
–65
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Package Thermal Data(1)
PACKAGE
BOARD
θJC
θJCB
θJA
PowerFLEX (KTP)
SOT-223 (DCY)
High K, JESD 51-5
High K, JESD 51-7
3°C/W
28°C/W
53°C/W
30.6°C/W
(1) Maximum power dissipation is a function of TJ(max), θJA, 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.
Recommended Operating Conditions
MIN
MAX UNIT
VI – VO
IO
Input-to-output voltage differential
Output current
37
0.5
V
A
No suffix
Q suffix
0
125
125
TJ
Operating virtual junction temperature
°C
–40
Electrical Characteristics
over recommended operating virtual-junction temperature range, VI – VO = 5 V, IO = 0.1 A (unless otherwise noted)
PARAMETER
Line regulation(2)
TEST CONDITIONS(1)
TJ = 25°C
MIN
TYP
0.01
0.02
0.1
MAX
0.04
0.07
0.5
UNIT
VI – VO = 3 V to 40 V
%/V
Full temperature range
TJ = 25°C
Load regulation
IO = 10 mA to 500 mA
%VO
Full temperature range
0.3
1.5
ADJUST terminal current
50
100
5
µA
µA
V
Change in ADJUST terminal current
Reference voltage
VI – VO = 3 V to 40 V,
VI – VO = 3 V to 40 V,
IO = 10 mA to 500 mA
IO = 10 mA to 500 mA
0.2
1.2
1.25
0.7
1.3
Output-voltage temperature stability
%
Minimum load current
to maintain regulation
3.5
10
mA
VI – VO ≤ 15 V
500
150
900
250
0.003
65
Maximum output current
RMS output noise voltage (% of VO)
Ripple rejection
mA
%VO
VI – VO = 40 V, PD ≤ PD(max)
,
TJ = 25°C
f = 10 Hz to 10 kHz,
TJ = 25°C
CADJ = 0(3)
CADJ = 10 µF(3)
VO = 10 V, f = 120 Hz,
TJ = 25°C
dB
66
80
Long-term stability
TJ = 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.
2
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS
LINE REGULATION
vs
TEMPERATURE
LOAD REGULATION
vs
TEMPERATURE
1.00
0.20
0.15
V = 4.25 V to 41.25 V
I
V
O
= V
ref
V = 45 V
I
0.90
0.80
I
L
= 10 mA
V
O
= 5 V
0.10
0.05
I
L
= 10 mA to 100 mA
0.70
0.60
0.50
0.40
0.30
0.20
0.00
−0.05
V = 10 V
I
−0.10
−0.15
V
O
= 5 V
I
L
= 10 mA to 40 mA
−0.20
−0.25
−0.30
−0.35
−0.40
0.10
0
0
25
50
75
100
125
0
25
50
75
100
125
T − Temperature − °C
J
T − Temperature − °C
J
Figure 1.
Figure 2.
ADJUST TERMINAL CURRENT
TEMPERATURE STABILITY
vs
vs
TEMPERATURE
TEMPERATURE
55
53
1.260
V = 6.25 V
V = 4.25 V
I
I
V
O
= V
ref
V
O
= V
ref
1.255
1.250
1.245
I
L
= 10 mA
51
49
47
45
I
L
= 100 mA
I
L
= 10 mA
1.240
1.235
1.230
1.225
1.220
43
41
39
37
35
0
25
50
75
100
125
0
25
50
75
100
125
T − Temperature − °C
J
T − Temperature − °C
J
Figure 3.
Figure 4.
3
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
MINIMUM OPERATING CURRENT
OUTPUT CURRENT LIMIT
vs
INPUT-OUTPUT DIFFERENTIAL VOLTAGE
vs
INPUT-OUTPUT DIFFERENTIAL VOLTAGE
8
7
1.00
0.80
0.60
0.40
T = 125°C
J
T = 25°C
J
6
5
T = 25°C
J
4
3
2
1
T = 125°C
J
0.20
0.00
0
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
35
40
V − V − Input-Output Differential − V
I
O
V − V − Input-Output Differential − V
I
O
Figure 5.
Figure 6.
OUTPUT NOISE VOLTAGE
RIPPLE REJECTION
vs
TEMPERATURE
vs
TEMPERATURE
0.004
90
V = 15 Vdc and 1 V (120 Hz)
I
PP
V
= 10 V
= 100 mA
O
85
I
L
C
= 1 µF
L
80
75
C = 0.1 µF
i
0.003
0.002
C
ADJ
= 10 µF
70
65
60
55
50
45
C
ADJ
= 0 µF
0.001
0.000
V = 15 V
I
V
O
= 10 V
I
L
= 50 mA
Bandwidth = 10 Hz to 10 kHz
0
25
70
85
125
0
25 50 75
100
125
T − Temperature − °C
J
T − Temperature − °C
J
Figure 7.
Figure 8.
4
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
RIPPLE REJECTION
vs
INPUT-OUTPUT VOLTAGE DIFFERENTIAL
vs
FREQUENCY
TEMPERATURE
100
90
2.5
2
80
I = 500 mA
L
C
ADJ
= 10 µF
70
60
50
40
30
20
10
0
1.5
1
I = 100 mA
L
C
= 0 µF
ADJ
V = 15 Vdc and Vac = 1 V
I
PP
0.5
0
V
O
= 10 V
I
= 100 mA
L
C
L
= 1 µF
C = 0.1 µF
i
0
25
50
75
100
125
10 Hz
1 kHz
10 kHz
100 kHz
100 Hz
T − Temperature − °C
J
Frequency
Figure 9.
Figure 10.
OUTPUT IMPEDANCE
vs
FREQUENCY
10.00
1.00
0.10
V = 15 V
I
V
O
= 10 V
I
L
= 100-mA dc and 10-mA RMS
C
ADJ
= 0 µF
C
ADJ
= 10 µF
0.01
150 kHz
10 Hz
1 kHz
5 kHz
10 kHz
50 kHz 100 kHz
50 Hz
100 Hz
500 Hz
Frequency
Figure 11.
5
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
LINE TRANSIENT RESPONSE
vs
TIME
1
0.8
0.6
0.4
0.2
0
V
= 10 V
O
−0.2
−0.4
V = 15 V, ∆V = +1 V
I
I
I
L
= 50 mA
−0.6 T = 25°C
J
C
C
= 0 µF
L
−0.8
−1
= 0 µF
ADJ
1.2
1
0.8
0.6
0.4
0.2
0
−1.0
−0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
Time − µs
Figure 12.
LOAD TRANSIENT RESPONSE
vs
TIME
5.0
4.0
3.0
2.0
V = 15 V
I
V
O
= 10 V
I
L
= 50 mA
∆I = +500 mA
L
C
L
= 1 µF
C
ADJ
= 10 µF
1.0
0
−1.0
−2.0
−3.0
C
C
= 0 µF
L
= 0 µF
ADJ
−4.0
0.6
0.5
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−10
−5
0
5
10
15
20
25
30
35
Time − µs
Figure 13.
6
LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297M–APRIL 2000–REVISED OCTOBER 2005
APPLICATION INFORMATION
D1 (Note E)
1N4002
Input
Output
V
I
V (Note C)
O
LM317M
R
240 Ω
1
Adjust
D2 (Note E)
1N4002
V
ref
= 1.25 V
I
Adj
C (Note A)
i
C (Note B)
O
0.1 µF
1.0 µF
C
ADJ
(Note D)
R
2
NOTES: A. C is not required, but is recommended, particularly if the regulator is not in close proximity
i
to the power-supply filter capacitors. A 0.1-µF disc or 1-µF tantalum provides sufficient
bypassing for most applications, especially when adjustment and output capacitors are used.
B.
C.
C
improves transient response, but is not needed for stability.
is calculated as shown:
O
O
V
R2
R1
ǒ1 ) Ǔ
VO + Vref
) (IAdj R2)
Because I typically is 50 µA, it is negligible in most applications.
Adj
D.
C
ADJ
is used to improve ripple rejection; it prevents amplification of the ripple as the output voltage
is adjusted higher. If C
is used, it is best to include protection diodes.
ADJ
E. If the input is shorted to ground during a fault condition, protection diodes provide measures to
prevent the possiblility of external capacitors discharging through low-impedance paths in the IC. By
providing low-impedance discharge paths for C and C
, respectively, D1 and D2 prevent the
O
ADJ
capacitors from discharging into the output of the regulator.
Figure 14. Adjustable Voltage Regulator
7
PACKAGE OPTION ADDENDUM
www.ti.com
18-Oct-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
LM317MDCY
ACTIVE
ACTIVE
SOT-223
SOT-223
DCY
4
4
80
TBD
CU SNPB
CU SN
Level-2-235C-1 YEAR
Level-2-260C-1YEAR
LM317MDCYG3
DCY
80 Green (RoHS &
no Sb/Br)
LM317MDCYR
ACTIVE
ACTIVE
SOT-223
SOT-223
DCY
DCY
4
4
2500
TBD
CU SNPB
CU SN
Level-2-235C-1 YEAR
Level-2-260C-1YEAR
LM317MDCYRG3
2500 Green (RoHS &
no Sb/Br)
LM317MKTPR
ACTIVE
ACTIVE
PFM
PFM
KTP
KTP
2
2
3000
TBD
CU SNPB
CU SN
Level-1-220C-UNLIM
Level-1-260C-UNLIM
LM317MKTPRG3
3000 Green (RoHS &
no Sb/Br)
LM317MQDCYR
ACTIVE
ACTIVE
SOT-223
SOT-223
DCY
DCY
4
4
2500
TBD
SNPB
Level-2-235C-1 YEAR
Level-2-260C-1 YEAR
LM317MQDCYRG3
2500 Green (RoHS &
no Sb/Br)
CU SN
LM317MQKTPR
ACTIVE
PFM
KTP
2
3000
TBD
CU SNPB
Level-1-220C-UNLIM
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan
-
The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS
&
no Sb/Br)
-
please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MPDS094A – APRIL 2001 – REVISED JUNE 2002
DCY (R-PDSO-G4)
PLASTIC SMALL-OUTLINE
6,70 (0.264)
6,30 (0.248)
3,10 (0.122)
2,90 (0.114)
4
0,10 (0.004)
M
3,70 (0.146)
3,30 (0.130)
7,30 (0.287)
6,70 (0.264)
Gauge Plane
1
2
3
0,25 (0.010)
0,84 (0.033)
0,66 (0.026)
0°–10°
2,30 (0.091)
0,10 (0.004)
M
4,60 (0.181)
0,75 (0.030) MIN
1,70 (0.067)
1,50 (0.059)
1,80 (0.071) MAX
0,35 (0.014)
0,23 (0.009)
Seating Plane
0,08 (0.003)
0,10 (0.0040)
0,02 (0.0008)
4202506/B 06/2002
NOTES: A. All linear dimensions are in millimeters (inches).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion.
D. Falls within JEDEC TO-261 Variation AA.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MPSF001F – JANUARY 1996 – REVISED JANUARY 2002
KTP (R-PSFM-G2)
PowerFLEX PLASTIC FLANGE-MOUNT PACKAGE
0.080 (2,03)
0.070 (1,78)
0.243 (6,17)
0.233 (5,91)
0.228 (5,79)
0.218 (5,54)
0.050 (1,27)
0.040 (1,02)
0.130 (3,30) NOM
0.010 (0,25) NOM
Thermal Tab
(See Note C)
0.215 (5,46)
0.287 (7,29)
0.277 (7,03)
NOM
0.247 (6,27)
0.237 (6,02)
0.381 (9,68)
0.371 (9,42)
0.100 (2,54)
0.090 (2,29)
0.032 (0,81) MAX
Seating Plane
0.004 (0,10)
0.090 (2,29)
0.180 (4,57)
0.005 (0,13)
0.001 (0,02)
0.031 (0,79)
0.025 (0,63)
0.010 (0,25)
M
0.047 (1,19)
0.037 (0,94)
0.010 (0,25) NOM
Gage Plane
0.010 (0,25)
2°–ā6°
4073388/M 01/02
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. The center lead is in electrical contact with the thermal tab.
D. Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
E. Falls within JEDEC TO-252 variation AC.
PowerFLEX is a trademark of Texas Instruments.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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