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LM2651 bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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LM2651 bảng dữ liệu(HTML) 3 Page - Texas Instruments |
3 / 20 page LM2651 www.ti.com SNVS032C – MAY 2004 – REVISED APRIL 2005 Absolute Maximum Ratings (1) Input Voltage 15V Feedback Pin Voltage −0.4V ≤ VFB ≤ 5V Power Dissipation (TA =25°C), (2) 893 mW Junction Temperature Range −40°C ≤ TJ ≤ +125°C Storage Temperature Range −65°C to +150°C ESD Susceptibility Human Body Model (3) 1kV (1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see the Electrical Characteristics. (2) The maximum allowable power dissipation is calculated by using PDmax = (TJmax − TA)/θJA , where TJmax is the maximum junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance of the specified package. The 893 mW rating results from using 150°C, 25°C, and 140°C/W for TJmax, TA, and θJA respectively. A θJA of 140°C/W represents the worst- case condition of no heat sinking of the 16-pin TSSOP package. Heat sinking allows the safe dissipation of more power. The Absolute Maximum power dissipation must be derated by 7.14mW per °C above 25°C ambient. The LM2651 actively limits its junction temperature to about 165°C. (3) The human body model is a 100pF capacitor discharged through a 1.5k Ω resistor into each pin. Operating Ratings (1) Supply Voltage 4V ≤ VIN ≤ 14V (1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see the Electrical Characteristics. Copyright © 2004–2005, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2651 |
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