Maker : Motorola Inc
Part No. : LM317LZ

  Datasheet PDF : LM317LZ.pdf
  Cross Reference : LM317LZ Cross Reference
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Product Information

Order this document by LM317L/D LM317L Three-Terminal 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. • Output Current in Excess of 100 mA LOW CURRENT THREE–TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR SEMICONDUCTOR TECHNICAL DATA Z SUFFIX PLASTIC PACKAGE CASE 29 Pin 1. Adjust 2. Vout 3. Vin • • • • • • • 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 1 2 3 D SUFFIX PLASTIC PACKAGE CASE 751 (SOP–8*) 8 1 Pin 1. 2. 3. 4. 5. 6. 7. 8. Vin Vout Vout Adjust N.C. Vout Vout N.C. Simplified Application Vin Vout R1 240 IAdj Cin* 0.1µF Adjust + C ** O 1.0µF LM317L * SOP–8 is an internally modified SO–8 package. Pins 2, 3, 6 and 7 are electrically common to the die attach flag. This internal lead frame modification decreases package thermal resistance and increases power dissipation capability when appropriately mounted on a printed circuit board. SOP–8 conforms to all external dimensions of the standard SO–8 package. 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. Vout ORDERING INFORMATION Device LM317LD LM317LZ LM317LBD LM317LBZ Operating Temperature Range TJ = 0° to +125°C TJ = –40° to +125°C Package SOP–8 Plastic SOP–8 Plastic Rev 1 + 1.25 V 1 ) R2 ) IAdj R2 R1 Since IAdj is controlled to less than 100 µA, the error associated with this term is negligible in most applications. © Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA 1 LM317L MAXIMUM RATINGS Rating Input–Output Voltage Differential Power Dissipation Operating Junction Temperature Range Storage Temperature Range Symbol VI–VO PD TJ Tstg Value 40 Internally Limited –40 to +125 –65 to +150 Unit Vdc W °C °C 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 VI – VO ≤ 6.25 V, PD ≤ Pmax, Z Package VI – VO ≤ 40 V, PD ≤ Pmax, TA = 25°C, Z Package RMS Noise, % of VO TA = 25°C, 10 Hz ≤ f ≤ 10 kHz Ripple Rejection (Note 4) VO = 1.2 V, f = 120 Hz CAdj = 10 µF, VO = 10.0 V Long Term Stability, TJ = Thigh (Note 5) TA = 25°C for Endpoint Measurements Thermal Resistance, Junction–to–Case Z Package Thermal Resistance, Junction–to–Air Z Package 4 Figure 1 2 Symbol Regline Regload – – 3 1, 2 I...

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