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LM2588S-ADJ 데이터시트(PDF) 3 Page - Texas Instruments |
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LM2588S-ADJ 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 38 page LM2588 www.ti.com SNVS117D – APRIL 1998 – REVISED APRIL 2013 Absolute Maximum Ratings (1) (2) Input Voltage −0.4V ≤ VIN ≤ 45V Switch Voltage −0.4V ≤ VSW ≤ 65V Switch Current(3) Internally Limited Compensation Pin Voltage −0.4V ≤ VCOMP ≤ 2.4V Feedback Pin Voltage −0.4V ≤ VFB ≤ 2 VOUT ON /OFF Pin Voltage −0.4V ≤ VSH ≤ 6V Sync Pin Voltage −0.4V ≤ VSYNC ≤ 2V Power Dissipation(4) Internally Limited Storage Temperature Range −65°C to +150°C Lead Temperature (Soldering, 10 sec.) 260°C Maximum Junction Temperature(4) 150°C Minimum ESD Rating (C = 100 pF, R = 1.5 k Ω) 2 kV (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. These ratings apply when the current is limited to less than 1.2 mA for pins 1, 2, 3, and 6. Operating ratings indicate conditions for which the device is intended to be functional, but device parameter specifications may not be ensured under these conditions. For ensured specifications and test conditions, see the Electrical Characteristics. (2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications. (3) Note that switch current and output current are not identical in a step-up regulator. Output current cannot be internally limited when the LM2588 is used as a step-up regulator. To prevent damage to the switch, the output current must be externally limited to 5A. However, output current is internally limited when the LM2588 is used as a flyback regulator (see the Application Hints section for more information). (4) The junction temperature of the device (TJ) is a function of the ambient temperature (TA), the junction-to-ambient thermal resistance ( θJA), and the power dissipation of the device (PD). A thermal shutdown will occur if the temperature exceeds the maximum junction temperature of the device: PD × θJA + TA(MAX) ≥ TJ(MAX). For a safe thermal design, check that the maximum power dissipated by the device is less than: PD ≤ [TJ(MAX) − TA(MAX)]/θJA. When calculating the maximum allowable power dissipation, derate the maximum junction temperature—this ensures a margin of safety in the thermal design. Operating Ratings Supply Voltage 4V ≤ VIN ≤ 40V Output Switch Voltage 0V ≤ VSW ≤ 60V Output Switch Current ISW ≤ 5.0A Junction Temperature Range −40°C ≤ TJ ≤ +125°C Copyright © 1998–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2588 |
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