www.fairchildsemi.com KA317M 3-Terminal 0.5A Positive Adjustable Regulator Features Description Output Current in Excess of 0.5A The KA317M is a 3-Terminal adjustable positive voltage Output Adjustable Between 1.2V and 37V regulator capable of supplying in excess of 500mA over an Internal Thermal Overload Protection output voltage range of 1.2V to 37V. This voltage regulator Internal Short Circuit Current Limiting is exceptionally easy to use and requires only two external Output Transistor Safe Area Compensation resistors to set the output voltage. Floating Operation for High Voltage Applications D-PAK 2 1 3 1. Adj 2. Output 3. Input TO-220 1 2 3 Internal Block Diagram InputVin 3 + - Voltage Protection Circuitry Reference Rlimit 2 Vo Output 1 Vad j Rev. 1.0.2 2002 Fairchild Semiconductor CorporationKA317M Absolute Maximum Ratings Parameter Symbol Value Unit Input Output Voltage Differential V - V 40 V I O Power Dissipation P Internally limited W D Thermal Resistance Junction-Air R 100 C/W JA D-PAK (Note1,2) Operating Junction Temperature Range T 0 ~ +125 C j Storage Temperature Range T -65 ~+125 C STG Electrical Characteristics (V -V =5V, I = 0.1A, 0C T + 125C, P = 7.5W, unless otherwise specified) I O O J DMAX Parameter Symbol Conditions Min. Typ. Max. Unit T = +25C, 3V V V 40V - 0.01 0.04 A I O Line Regulation (Note3) Rline %/ V 3V V V 40V - 0.02 0.07 I O T =+ 25C, 10mA I 0.5A A O V 5V -5 25 mV O V 5V 0.1 0.5 %/ V O O Load Regulation (Note3) Rload 10mA I 0.5A O V 5V -20 70 mV O V 5V 0.3 1.5 %/ V O O Adjustment Pin Current I - - 50 100 uA ADJ Adjustment Pin Current 3V V - V 40V I O I -0.2 5 uA ADJ Change 10mA I 0.5A, P < P O D DMAX 3V < V - V < 40V I O Reference Voltage V 1.20 1.25 1.30 V REF 10mA IO 0.5A, PD < PDMAX Temperature Stability ST - - 0.7 - %/ V T O Minimum Load Current to I V - V = 40V - 3.5 10 mA L(MIN) I O Maintain Regulation VI - VO 15V, PD < PDMAX 0.5 0.9 - A Maximum Output Current I O(MAX) V - V = 40V I O 0.15 0.25 - P < P , T =+ 25C D DMAX A RMS Noise, % of V e T = +25C, 10Hz < f < 10KHz - 0.003 - %/ V OUT N A O VO = 10V, f = 120Hz Ripple Rejection RR without C 65 -dB ADJ C = 10uF (Note4) 66 80 ADJ Long-Term Stability ST T =+ 125C, 1000Hours - 0.3 1 %/1000Hrs J Note : 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow. 3. Load and Line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken O into account separately. Pulse testing with low duty cycle is used. 4. C , when used, is connected between the adjustment pin and ground. ADJ 2