www.fairchildsemi.com KA317AHV 3-Terminal Positive Adjustable Regulator Features 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. 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 TO-220 Output 1 2 3 1. Adj 2. Output 3. Input Internal Block Diagram Vin 3 Input + - Voltage Reference Protection Circuitry Rlimit 2 Vo Output 1 Vadj Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation KA317AHV Absolute Maximum Ratings Parameter Symbol Value Unit Input-Output Voltage Differential V I - VO 60 V Lead Temperature TLEAD 230 °C Power Dissipation PD Internally limited W Operating Junction Temperature Range Tj 0 ~ +125 °C TSTG -65 ~+125 °C ∆Vo/∆T ±0.02 %/°C Storage Temperature Range Temperature Coefficient of Output Voltage 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) Load Regulation (Note1) Adjustable Pin Current Symbol Rline Rload Conditions 0.01 0.04 %/V 3V ≤ VI - VO ≤ 60V - 0.02 0.07 %/V TA = +25°C, 10mA ≤IO ≤ IMAX VO< 5V VO ≥ 5V - 18 0.4 25 0.5 10mA ≤ IO ≤ IMAX VO < 5V VO ≥ 5V - 40 0.8 70 1.5 - 46 100 µA - 2.0 5 µA 1.20 1.25 1.30 V - 0.7 - %/VO - 3.5 12 mA 1.0 2.2 0.3 - A IADJ 3V ≤ VI - VO ≤ 60V 10mA ≤ IO ≤ IMAX PD ≤ PMAX Reference Voltage VREF 3V ≤ VIN - VO ≤ 60V 10mA ≤ IO ≤ IMAX PD ≤ PMAX STT - Minimum Load Current to Maintain Regulation IL(MIN) VI - VO = 60V Maximum Output Current IO(MAX) VI - VO ≤ 15V, PD ≤ PMAX VI - VO ≤ 60V, PD ≤ PMAX TA=25°C RMS Noise, % of VOUT eN TA= +25°C, 10Hz ≤ f ≤ 10kHz Ripple Rejection RR VO = 10V, f = 120Hz without CADJ CADJ = 10µF (Note2) Long-Term Stability, TJ = THIGH ST TA = +25°C for end point measurements, 1000HR RθJC Unit - ∆IADJ Thermal Resistance Junction to Case Typ. Max. TA = +25°C 3V ≤ VI - VO ≤ 60V Adjustable Pin Current Change Temperature Stability Min. - - 0.003 0.01 mV %/VO mV %/VO %/VO 66 60 75 - dB - 0.3 1 % - 5 - °C/W 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 KA317AHV ADJUSTMENT CURRENT(uA) OUTPUT VOLTAGE DEVIATION(%) Typical Performance Characteristics TEMPERATURE (°C) TEMPERATURE (°C) Figure 2. Adjustment Current REFERENCE VOLTAGE(V) INPUT-OUTPUT DIFFERENTIAL(V) Figure 1. Load Regulation TEMPERATURE (°C) Figure 3. Dropout Voltage TEMPERATURE (°C) Figure 4. Reference Voltage 3 KA317AHV Typical Application VI Input VI KA317HV KA317 Output Vo Vadj Ci 0. 1µ µF R1 I adj Co 1µ µF R2 I adj 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 KA317AHV Mechanical Dimensions Package Dimensions in millimeters TO-220 4.50 ±0.20 2.80 ±0.10 (3.00) +0.10 1.30 –0.05 18.95MAX. (3.70) ø3.60 ±0.10 15.90 ±0.20 1.30 ±0.10 (8.70) (1.46) 9.20 ±0.20 (1.70) 9.90 ±0.20 (45° 1.52 ±0.10 0.80 ±0.10 2.54TYP [2.54 ±0.20] 10.08 ±0.30 (1.00) 13.08 ±0.20 ) 1.27 ±0.10 +0.10 0.50 –0.05 2.40 ±0.20 2.54TYP [2.54 ±0.20] 10.00 ±0.20 5 KA317AHV Ordering Information Product Number Package Operating Temperature KA317AHV TO-220 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. 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. www.fairchildsemi.com 7/2/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation