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LM317DCY bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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LM317DCY bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 32 page LM317 www.ti.com SLVS044W – SEPTEMBER 1997 – REVISED OCTOBER 2014 7.5 Electrical Characteristics over recommended ranges of operating virtual junction temperature (unless otherwise noted) PARAMETER TEST CONDITIONS(1) MIN TYP MAX UNIT TJ = 25°C 0.01 0.04 Line regulation(2) VI – VO = 3 V to 40 V %/V TJ = 0°C to 125°C 0.02 0.07 VO ≤ 5 V 25 mV CADJ (3) = 10 μF, TJ = 25°C VO ≥ 5 V 0.1 0.5 %VO Load regulation IO = 10 mA to 1500 mA VO ≤ 5 V 20 70 mV TJ = 0°C to 125°C VO ≥ 5 V 0.3 1.5 %VO Thermal regulation 20-ms pulse, TJ = 25°C 0.03 0.07 %VO/W ADJUST terminal current 50 100 μA Change in VI – VO = 2.5 V to 40 V, PD ≤ 20 W, IO = 10 mA to 1500 mA 0.2 5 μA ADJUST terminal current Reference voltage VI – VO = 3 V to 40 V, PD ≤ 20 W, IO = 10 mA to 1500 mA 1.2 1.25 1.3 V Output-voltage TJ = 0°C to 125°C 0.7 %VO temperature stability Minimum load current VI – VO = 40 V 3.5 10 mA to maintain regulation VI – VO ≤ 15 V, PD < PMAX (4) 1.5 2.2 Maximum output current A VI – VO ≤ 40 V, PD < PMAX (4), TJ = 25°C 0.15 0.4 RMS output noise voltage f = 10 Hz to 10 kHz, TJ = 25°C 0.003 %VO (% of VO) CADJ = 0 μF (3) 57 Ripple rejection VO = 10 V, f = 120 Hz dB CADJ = 10 μF (3) 62 64 Long-term stability TJ = 25°C 0.3 1 %/1k hr (1) Unless otherwise noted, the following test conditions apply: |VI – VO| = 5 V and IOMAX = 1.5 A, TJ = 0°C to 125°C. Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. (2) Line regulation is expressed here as the percentage change in output voltage per 1-V change at the input. (3) CADJ is connected between the ADJUST terminal and GND. (4) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA) / θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. Copyright © 1997–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM317 |
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