Maker : ON Semiconductor
Part No. : LM317L

  Datasheet PDF : LM317L.pdf
  Cross Reference : LM317L Cross Reference
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Product Information

LM317L 100 mA Adjustable Output, Positive Voltage Regulator The LM317L is an adjustable 3−terminal positive voltage regulator capable of supplying in excess of 100 mA over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making them essentially blow−out proof. The LM317L serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317L can be used as a precision current regulator. Features http://onsemi.com LOW CURRENT THREE−TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR • • • • • • • • • Pb−Free Packages are Available Output Current in Excess of 100 mA Output Adjustable Between 1.2 V and 37 V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe−Area Compensation Floating Operation for High Voltage Applications Standard 3−Lead Transistor Package Eliminates Stocking Many Fixed Voltages SOIC−8 D SUFFIX CASE 751 8 1 Pin 1. 2. 3. 4. 5. 6. 7. 8. Vin Vout Vout Adjust N.C. Vout Vout N.C. TO−92 Z SUFFIX CASE 29 Pin 1. Adjust 2. Vout 3. Vin 1 2 3 Simplified Application Vin Vout LM317L ORDERING INFORMATION R1 240 See detailed ordering and shipping information in the package dimensions section on page 4 of this data sheet. IAdj Cin* 0.1mF Adjust + C ** O 1.0mF R2 * Cin is required if regulator is located an appreciable ** distance from power supply filter. ** CO is not needed for stability, however, ** it does improve transient response. R Vout + 1.25 V 1 ) 2 ) IAdj R2 R1 Since IAdj is controlled to less than 100 mA, the error associated with this term is negligible in most applications. © Semiconductor Components Industries, LLC, 2004 1 November, 2004 − Rev. 7 Publication Order Number: LM317L/D LM317L MAXIMUM RATINGS Rating Input−Output Voltage Differential Power Dissipation Case 29 (TO−92) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 751 (SOIC−8) (Note 1) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Operating Junction Temperature Range Storage Temperature Range Symbol VI−VO Value 40 Unit Vdc PD RqJA RqJC Internally Limited 160 83 W °C/W °C/W PD RqJA RqJC TJ Tstg Internally Limited 180 45 −40 to +125 −65 to +150 W °C/W °C/W °C °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. SOIC−8 Junction−to−Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 23 for Thermal Resistance variation versus pad size. http://onsemi.com 2 LM317L ELECTRICAL CHARACTERISTICS (VI−VO = 5.0 V; IO = 40 mA; TJ = Tlow to Thigh (Note 1); Imax and Pmax (Note 2); unless otherwise noted.) LM317L, LB Characteristics Line Regulation (Note 3) TA = 25°C, 3.0 V ≤ VI − VO ≤ 40 V Load Regulation (Note 3), TA = 25°C 10 mA ≤ IO ≤ Imax − LM317L VO ≤ 5.0 V VO ≥ 5.0 V Adjustment Pin Current Adjustment Pin Current Change 2.5 V ≤ VI − VO ≤ 40 V, PD ≤ Pmax 10 mA ≤ IO ≤ Imax − LM317L Reference Voltage 3.0 V ≤ VI − VO ≤ 40 V, PD ≤ Pmax 10 mA ≤ IO ≤ Imax − LM317L Line Regulation (Note 3), 3.0 V ≤ VI − VO ≤ 40 V Load Regulation (Note 3) 10 mA ≤ IO ≤ Imax − LM317L VO ≤ 5.0 V VO ≥ 5.0 V Temperature Stability (Tlow ≤ TJ ≤ Thigh) Minimum Load Current to Maintain Regulation (VI − VO = 40 V) Maximum Output Current V...

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