Maker : Texas Instruments
Part No. : LM317M

  Datasheet PDF : LM317M.pdf
  Cross Reference : LM317M Cross Reference
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Product Information

LM317M 3-TERMINAL ADJUSTABLE REGULATOR SLVS297 – APRIL 2000 D D D D D Output Voltage Range Adjustable From 1.2 V to 37 V Output Current Greater Than 500 mA Internal Short-Circuit Current Limiting Thermal Overload Protection Output Safe-Area Compensation KTP PACKAGE (TOP VIEW) INPUT OUTPUT ADJUST The OUTPUT terminal is in electrical contact with the mounting base. description The LM317M device is an adjustable 3-terminal positive voltage regulator capable of supplying more than 500 mA over an output-voltage range of 1.2 V to 37 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. The LM317M is packaged in the DPAK/TO-252-equivalent KTP package, which is easy to handle and use. In addition to 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 6 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 very high ripple-rejection ratios, which are difficult to achieve with standard 3-terminal regulators. The LM317M is characterized for operation over the virtual junction temperature range of 0°C to 125°C. 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. Copyright © 2000, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 LM317M 3-TERMINAL ADJUSTABLE REGULATOR SLVS297 – APRIL 2000 absolute maximum ratings over operating temperature range (unless otherwise noted)† Input-to-output differential voltage, Vl – VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Package thermal impedance, θJA (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † 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. NOTES: 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 impact reliability. 2. The package thermal impedance is calculated in accordance with JESD 51. recommended operating conditions MIN Input-to-output voltage differential, VI – VO Output current, IO Operating virtual-junction temperature, TJ 0 MAX 37 500 125 UNIT V mA °C electrical characteristics over recommended operating virtual-junction temperature range, VI – VO = 5 V, IO = 0.1 A (unless otherwise noted) PARAMETER Line regulation (see Note 3) Load regulation ADJUST terminal current ADJUST termina...

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