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INPUT

ADJUST

INPUT

OUTPUT

ADJUST

OUTPUT

KVU (TO-252) PACKAGE

(TOP VIEW)

OUTPUT

INPUT

ADJUST

OUTPUT

KTP (PFM) PACKAGE

(TOP VIEW)

DCY (SOT-223) PACKAGE

(TOP VIEW)

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LM317M

SLVS297P –APRIL 2000–REVISED MARCH 2014

LM317M 3-Terminal Adjustable Regulator

1 Features 3 Description

The LM317M is an adjustable 3-terminal positive

• Output Voltage Range Adjustable

voltage regulator capable of supplying more than

from 1.25-V to 37-V

500-mA over an output-voltage range of 1.25-V to

• Output Current Greater Than 500-mA

37-V. The LM317M is exceptionally easy to use and

• Internal Short-Circuit Current Limiting

requires only two external resistors to set the output.

Furthermore, both line and load regulation are better

• Thermal-Overload Protection

than standard fixed regulators.

• Output Safe-Area Compensation

In addition to having higher performance than fixed

• Q Devices Meet Automotive Performance

regulators, the LM317M includes on-chip current

Requirements

limiting, thermal-overload protection, and safe-

• Customer-Specific Configuration Control Can Be

operating-area protection. All overload protection

Supported for Q Devices Along With

remains fully functional if the ADJUST terminal is

Major-Change Approval

disconnected.

The LM317 is a floating regulator meaning there is no

2 Applications

device ground terminal. Quiescent current flows to

• Electronic Point-of-Sales

the load instead of being wasted flowing to ground.

Regulated output voltage of hundreds of volts is

• Medical/Health/Fitness Applications

possible if the maximum input to output differential

• Printers

does not exceed 40-V at any time. Device can be

• Appliances/White Goods

used as a floating current source controlled by a

single resistor.

• TV/Set-Top Box

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

of any type is needed. An optional electrolytic or

tantalum output capacitor can be added to improve

transient response. Ceramic output capacitors can be

used but output ringing may be present on transients.

The ADJUST terminal can be bypassed with any type

of capacitor to achieve high ripple-rejection ratios,

which are difficult to achieve with standard three-

terminal regulators.

Device Information

ORDER NUMBER PACKAGE BODY SIZE

LM317MDCY SOT-223 (3) 6,5mm x 3,5mm

LM317MKVURG3 TO-252 (3) 6,6mm x 6,1mm

LM317MKTPR PFM (3) 6,04mm x 6,15mm

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Summary of content (22 pages)

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Product Folder Sample & Buy Support & Community Tools & Software Technical Documents LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 LM317M 3-Terminal Adjustable Regulator 1 Features 3 Description • 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.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Terminal Configuration and Functions................ Specifications.......................................................
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LM317M www.ti.com SLVS297P – APRIL 2000 – REVISED MARCH 2014 5 Terminal Configuration and Functions ADJUST INPUT OUTPUT OUTPUT INPUT OUTPUT INPUT OUTPUT KVU (TO-252) PACKAGE (TOP VIEW) KTP (PFM) PACKAGE (TOP VIEW) DCY (SOT-223) PACKAGE (TOP VIEW) OUTPUT ADJUST ADJUST Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION ADJUST 1 I Output feedback voltage OUTPUT 2 O Regulated output voltage INPUT 3 – Input supply voltage, 2.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com 6.4 Thermal Information LM317M THERMAL METRIC (1) DCY UNIT 4 TERMINALS RθJA Junction-to-ambient thermal resistance 60.2 RθJCtop Junction-to-case (top) thermal resistance 42.0 RθJB Junction-to-board thermal resistance 9.4 ψJT Junction-to-top characterization parameter 3.4 ψJB Junction-to-board characterization parameter 9.
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LM317M www.ti.com SLVS297P – APRIL 2000 – REVISED MARCH 2014 6.6 Typical Characteristics 1.00 0.15 ∆VO − Output Voltage Change − % ∆VO − Output Voltage Change − % 0.90 0.20 VI = 4.25 V to 41.25 V VO = Vref IL = 10 mA 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0 VI = 45 V VO = 5 V IL = 10 mA to 100 mA 0.10 0.05 0.00 −0.05 −0.10 −0.15 VI = 10 V VO = 5 V IL = 10 mA to 40 mA −0.20 −0.25 −0.30 −0.35 0 25 50 75 100 −0.40 125 0 25 TJ − Temperature − °C Figure 1.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com Typical Characteristics (continued) 0.004 90 VI = 15 Vdc and 1 VPP (120 Hz) VO = 10 V IL = 100 mA CL = 1 µF Ci = 0.1 µF 80 0.003 Ripple Rejection − dB Ouput Noise Voltage − % VO 85 0.002 75 CADJ = 10 µF 70 65 60 0.001 CADJ = 0 µF 55 VI = 15 V VO = 10 V IL = 50 mA Bandwidth = 10 Hz to 10 kHz 50 45 0.000 0 25 50 75 100 0 125 25 Figure 7.
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LM317M www.ti.com SLVS297P – APRIL 2000 – REVISED MARCH 2014 7 Detailed Description 7.1 Overview The LM317 is a 500-mA linear regulator with high voltage tolerance up to 40-V. The device has a feedback voltage that is relative to the output instead of ground. This ungrounded design allows the LM317 to have superior line and load regulation. It also allows the LM317 to be used as a current source or current sink using a single resistor. Any output voltage output voltage from 1.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com Feature Description (continued) 7.3.4 Current Sources The two current sources represent the typical ‘adjust terminal current’ and typical ‘minimum current for regulation'. 7.4 Device Functional Modes 7.4.1 Normal operation The device OUTPUT terminal will source current necessary to make OUTPUT terminal 1.25-V greater than ADJUST terminal to provide output regulation. 7.4.2 Operation With Low Input Voltage The device requires up to 2.
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LM317M www.ti.com SLVS297P – APRIL 2000 – REVISED MARCH 2014 8 Applications and Implementation 8.1 Application Information The LM317M is a linear voltage regulator. The feedback is the output terminal to adjust terminal differential. The output voltage can be set to any value from 1.25-V to Vout maximum with two resistors. 8.2 Typical Application D1 1N4002 Input VI Output LM317M Adjust IADJ Vref=1.25V VO R1 240 Ω D2 1N4002 CI 1.0 μF CI 0.1 μF R2 CADJ 8.2.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com 8.2.2.5 Protection Diodes If the input is shorted to ground during a fault condition, protection diode (D1) prevents discharge through the LM317M. If the output is shorted to ground during a fault condition, protection diode (D2) prevents adjust terminal capacitor discharge through the LM317M. 8.2.2.
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LM317M www.ti.com SLVS297P – APRIL 2000 – REVISED MARCH 2014 9 Power Supply Recommendations The LM317 is designed to operate from an input voltage supply range between 2.5-V to 40-V greater than the output voltage. If the device is more than six inches from the input filter capacitors, an input bypass capacitor, 0.1-µF or greater, of any type is needed for stability. 10 Layout 10.1 Layout Guidelines • • • It is recommended that the input terminal be bypassed to ground with a bypass-capacitor.
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LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com 11 Device and Documentation Support 11.1 Trademarks All trademarks are the property of their respective owners. 11.2 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 17-Feb-2014 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
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PACKAGE MATERIALS INFORMATION www.ti.com 17-Feb-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device LM317MDCYR Package Package Pins Type Drawing SPQ SOT-223 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) DCY 4 2500 330.0 12.4 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 7.05 7.4 1.9 8.0 12.0 Q3 LM317MKVURG3 TO-252 KVU 3 2500 330.0 16.4 6.9 10.5 2.7 8.0 16.0 Q2 LM317MQDCYR SOT-223 DCY 4 2500 330.0 12.4 6.83 7.42 1.88 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 17-Feb-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM317MDCYR SOT-223 DCY 4 2500 340.0 340.0 38.0 LM317MKVURG3 TO-252 KVU 3 2500 340.0 340.0 38.0 LM317MQDCYR SOT-223 DCY 4 2500 358.0 335.0 35.0 LM317MQDCYRG4 SOT-223 DCY 4 2500 358.0 335.0 35.
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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 0,84 (0.033) 0,66 (0.026) 2,30 (0.091) 4,60 (0.181) 1,80 (0.071) MAX 3 0°–10° 0,10 (0.004) M 0,25 (0.010) 0,75 (0.030) MIN 1,70 (0.067) 1,50 (0.059) 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. B.
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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) 0.010 (0,25) NOM 0.130 (3,30) NOM 0.215 (5,46) NOM 0.247 (6,27) 0.237 (6,02) Thermal Tab (See Note C) 0.287 (7,29) 0.277 (7,03) 0.381 (9,68) 0.371 (9,42) 0.100 (2,54) 0.090 (2,29) 0.032 (0,81) MAX Seating Plane 0.090 (2,29) 0.180 (4,57) 0.004 (0,10) 0.005 (0,13) 0.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.