 전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크
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0002RH 데이터 시트보기 (PDF) - M.S. Kennedy Corporation

 부품명 상세내역 제조사 0002RH RAD HARD, HIGH SPEED, BUFFER AMPLIFIER M.S. Kennedy Corporation 0002RH Datasheet PDF : 5 Pages
 1 2 3 4 5 APPLICATION NOTES HEAT SINKING To determine if a heat sink is necessary for your application and if so, what type, refer to the thermal model and governing equation below. Thermal Model: RΘSA = ((TJ - TA)/PD) - (RΘJC) - (RΘCS) = ((125°C - 80°C) / 0.36W) - 55°C/W - 0.15°C/W = 125 - 55.15 = 69.9°C/W This heat sink in this example must have a thermal resistance of no more than 69.9°C/W to maintain a junction temperature of no more than +125°C. Typical Applications: Governing Equation: TJ=PD X (RΘJC +RΘCS +RΘSA) +TA Where TJ=Junction Temperature PD=Total Power Dissipation RΘJC=Junction to Case Thermal Resistance RΘCS=Heat Sink to Ambient Thermal Resistance TC=Case Temperature TA=Ambient Temperature TS=Sink Temperature Example: This example demonstrates a worst case analysis for the buffer output stage. This occurs when the output voltage is 1/2 the power supply voltage. Under this condition, maximum power transfer occurs and the output is under maximum stress. Conditions: VCC= ±12VDC Vo= ±6Vp Sine Wave, Freq. = 1KHz RL= 100Ω TOTAL DOSE RADIATION TEST PERFORMANCE For a worst case analysis we will treat the ±6Vp sine wave as an 6 VDC output voltage. 1.) Find Driver Power Dissipation PD= (Vcc-Vo) (Vo/RL) = (12V-6V) (6V/100Ω) = 360mW 2.) For conservative design, set TJ=+125°C Max. 3.) For this example, worst case TA=+80°C 4.) RΘJC = 55° C/W from MSK 0002RH Data Sheet 5.) RΘCS = 0.15° C/W for most thermal greases 6.) Rearrange governing equation to solve for RΘSA Radiation performance curves for TID testing have been generated for all radiation testing performed by MS Kennedy. These curves show performance trends throughout the TID test process and can be located in the MSK 0002RH radiation test report. The complete radiation test report is available in the RAD HARD PROD- UCTS section on the MSK website. http://www.mskennedy.com/store.asp?pid=9951&catid=19680 3 8548-2 Rev. D 10/12