LM317AHV_09

www.fairchildsemi.com LM317AHV 3-Terminal Positive Adjustable Regulator Features • • • • • • Output Current in Excess of 1.5A Output Adjustable Between 1. 2V and 57V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe Area Compensation TO-220 Package Description This monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5A of load current with an output voltage adjustable over a 1.2 to 57V. It employs internal current limiting, thermal shut down and safe area compensation. TO-220 Output 1 23 1. Adj 2. Output 3. Input Internal Block Diagram Vin Input 3 + - Voltage Reference Protection Circuitry Rlimit 2 Vo Output 1 Vad j Rev. 1.0.2 ©2009 Fairchild Semiconductor Corporation LM317AHV Absolute Maximum Ratings Parameter Input-Output Voltage Differential Lead Temperature Power Dissipation Operating Junction Temperature Range Storage Temperature Range Temperature Coefficient of Output Voltage Symbol VI - V O TLEAD PD Tj TSTG ΔVo/ΔT Value 60 230 Internally limited 0 ~ +125 -65 ~ +125 ±0.02 Unit V °C W °C °C %/°C Electrical Characteristics (VI-VO=5V, IO= 0.5A, 0°C ≤ TJ ≤ + 125°C, IMAX = 1.5A, PDMAX = 20W, unless otherwise specified) Parameter Line Regulation (Note1) Symbol Rline Conditions TA = +25°C 3V ≤ VI - VO ≤ 60V 3V ≤ VI - VO ≤ 60V TA = +25°C, 10mA ≤IO ≤IMAX VO< 5V VO ≥ 5 V 10mA ≤ IO ≤ IMAX VO < 5V VO ≥ 5V 3V ≤ VI - VO ≤60V 10mA ≤ IO ≤ IMAX, PD ≤ PMAX 3V ≤ VIN - VO ≤60V 10mA ≤ IO ≤ IMAX, PD ≤ PMAX VI - VO = 60V VI - VO ≤ 15V, PD ≤ PMAX VI - VO ≤ 60V, PD ≤ PMAX TA = 25°C TA= +25°C, 10Hz ≤ f ≤ 10kHz VO = 10V, f = 120Hz without CADJ CADJ = 10μF (Note2) TA = +25°C for end point measurements, 1000HR Min. Typ. 0.01 0.02 18 0.4 40 0.8 46 2.0 1.25 0.7 3.5 2.2 0.3 0.003 60 75 0.3 5 Max. 0.04 0.07 25 0.5 70 1.5 100 5 1.30 12 0.01 1 Unit %/V %/V mV %/VO mV %/VO μA μA V %/VO mA A %/VO dB % °C/W Load Regulation (Note1) Rload 1.20 1.0 66 - Adjustable Pin Current Adjustable Pin Current Change Reference Voltage Temperature Stability Minimum Load Current to Maintain Regulation Maximum Output Current RMS Noise, % of VOUT Ripple Rejection Long-Term Stability, TJ = THIGH Thermal Resistance Junction to Case IADJ ΔIADJ VREF STT IL(MIN) IO(MAX) eN RR ST RθJC Note : 1. Load and line regulation are specified at constant junction temperature. Change in VD due to heating effects must be taken into account separately. Pulse testing with low duty is used. (PMAX = 20W) 2. CADJ, when used, is connected between the adjustment pin and ground. 2 LM317AHV Typical Performance Characteristics OUTPUT VOLTAGE DEVIATION(%) TEMPERATURE (°C) ADJUSTMENT CURRENT(uA) TEMPERATURE (°C) Figure 1. Load Regulation Figure 2. Adjustment Current INPUT-OUTPUT DIFFERENTIAL(V) REFERENCE VOLTAGE(V) TEMPERATURE (°C) TEMPERATURE (°C) Figure 3. Dropout Voltage Figure 4. Reference Voltage 3 LM317AHV Typical Application VI Input Ci 0. 1μF VI LM317HV Vo KA317 Vadj Output R1 Iadj R2 I adj Co 1μF VO = 1.25V (1+ R 2/ R1)+Iadj R2 Figure 5. Programmable Regulator • Ci is required when regulator is located an appreciable distance from power supply filter. Co is not needed for stability, however, it does improve transient response. Since IADJ is controlled to less than 100μA, the error associated with this term is negligible in most applications. 4 LM317AHV Mechanical Dimensions Package Dimensions in millimeters TO-220 [ SINGLE GAUGE ] 5 LM317AHV Ordering Information Product Number LM317AHVT Package TO-220 Operating Temperature 0°C to +125°C DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.v 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 reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 7/3/09 0.0m 001 Stock#DS400516 © 2009 Fairchild Semiconductor Corporation 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.