FAIRCHILD LM317 Manual
Contents
1. defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings The Recommended Operating Conditions table will define the conditions for actual device operation Electrical Characteristic Vi Vo 5V lo 0 5A 0 C lt Tj lt 125 C Imax 1 5A Ppmax 20W unless otherwise specified Line Regulation Note 2 Rline Ta 25 C 3V lt Vi Vo lt 40V i 3V lt Vi Vo lt 40V 0 02 0 07 V 0 07 Ta 25 c 10MA lt Io lt Imax Vo lt 5V 25 0 mV Vo 0 5 10MA lt lo lt Imax Vo lt 5V 40 0 70 0 mV Vo Vo gt 5V 08 15 Adjustable Pin Current Change Alapy 13V lt Vi Vo lt 40V 2 0 5 0 LA 10mA lt lo lt MAX Pp lt PMAX 3V lt Vin Vo lt 40V 10MA lt Io lt Imax 1 20 1 25 1 30 V Pp lt Pmax Minimum Load Current to Maintain Regulation Imn Vi Vo 40V 35 120 mA Maximum Output Current lo MAX VI Vo lt 15V Pp lt PMAX VI Vo lt 40V Pp lt PMAX A 0 01 0 04 IN Load Regulation Note 2 Rload Vo 2 5V Reference Voltage VREF Ta 25 C RMS Noise of Vout eN Ta 25 C 10Hz lt f lt 10KHz Ripple Rejection Vo 10V f 120Hz without Capy peo 60 0 T Capy 10uF Note 3 75 0 Thermal Resistance Junction to Case Rouc ie ee epee ll S C W Note 2 Load and line regulation are specified at constant junction temperature Change in Vp due to heating effects must be taken into account2. separately Pulse testing with low duty is used Pmax 20S Note 3 CADJ when used is connected between the adjustment pin and ground www fairchildsemi com 2 Typical Performance Characteristics 55 A ol ol O ADJUSTMENT CURRENT UA gt O OUTPUT VOLTAGE DEVIATION ao Oo 50 25 0 25 50 75 100 125 FIGURE 1 Load Regulation FIGURE 2 Adjustment Current 1 26 AVo 100mV 2 a O m ui O 1 25 LL O O Z 1 245 A ma Lu 2 m Q Y 1 24 H D Z Z 1 235 50 25 0 25 50 75 100 125 TEMPERATURE C AE RA FIGURE 3 Dropout Voltage FIGURE 4 Reference Voltage Typical Application Vo 1 25V 1 Ro R1 lapy Ro Note C is required when regulator is located an appreciable distance from power supply filter Note C is not needed for stability however it does improve transient response Note Since lap is controlled to less than 100A the error associated with this term is negligible in most applications FIGURE 5 Programmable Regulator 3 www fairchildsemi com ZLEIN LM317 Physical Dimensions inches millimeters unless otherwise noted TO 220 9 90 0 20 4 50 0 20 8 70 o F 0 10 N 03 60 0 10 5 1 30 6 05 N i gt lt S N S 33 O N oO g a l wee 0 0 O fap 1 52 0 10 re 0 80 0 10 0 801010 0505550 _ 2 40 0 20
3. 2 54TYP 2 54TYP za 2 54 0 20 2 54 0 20 10 00 0 20 www fairchildsemi com Physical Dimensions inches millimeters unless otherwise noted Continued D PAK S 9 90 0 20 lt S l 1 a ae O I 5 q S O a O A a F Bn O O o _ LO 1 lt S i O Yi I 1 27 0 10 Le ee 0 10 2 54 TYP 2 54 TYP alana 10 00 0 20 Dimensions in Millimeters 15 30 0 30 4 50 0 20 12305 55 Fi 0 10 0 15 3 S ai i 2 40 0 20 ai i O50 5 cc T 10 00 0 20 9 20 0 20 4 90 0 20 Fairchild does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are intended for surgical implant into the body or b support or sustain life and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be rea sonably expected to result in a significant injur
4. DAES BON BSR RU MARES E March 2000 FAIRCHILD Revised June 2005 SEMICONDUCTOR LM317 3 Terminal Positive Adjustable Regulator General Description Features This monolithic integrated circuit is an adjustable 3 terminal E Output Current In Excess of 1 5A positive voltage regulator designed to supply more than E Output Adjustable Between 1 2V and 37V 1 5A of load current with an output voltage adjustable over E internal Thornal Gusilead Pisisciion a 1 2 to 37V It employs internal current limiting thermal a E Internal Short Circuit Current Limiting shut down and safe area compensation E Output Transistor Safe Operating Area Compensation E 10 220 Package E D2 PAK Package Ordering Code Product Number Operating Temperature LM317T TO 220 0 C to 125 C LM317D2TXM D2 PAK 0 C to 125 C Connection Diagrams Joyejnboy ajqeysnipy ANISOd JeUIWaL ZLSINT p 1 Adj 2 Output 3 Input Output 3 Input Internal Block Diagram Input Rlimit Output Adj 2005 Fairchild Semiconductor Corporation DS400281 www fairchildsemi com LM317 Absolute Maximum Ratings Input Output Voltage Differential V Operating Junction Temperature Range sG Storage Temperature Range G Temperature Coefficient of Output Voltage H C Note 1 Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values
5. y to the user 2 A critical component in any component of a life support device or system whose failure to perform can be rea sonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness www fairchildsemi com www fairchildsemi com 10 ejn y ajqeysnipy ANISOd JBUIWaL ZLEINT
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FAIRCHILD LM317 Manual