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LM2591 数据表(PDF) 4 Page - National Semiconductor (TI) |
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LM2591 数据表(HTML) 4 Page - National Semiconductor (TI) |
4 / 20 page All Output Voltage Versions Electrical Characteristics (Continued) Note 11: Junction to ambient thermal resistance (no external heat sink) for the package mounted TO-220 package mounted vertically, with the leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2. Note 12: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 0.5 in2 of (1 oz.) copper area. Note 13: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 2.5 in2 of (1 oz.) copper area. Note 14: Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with 3 in2 of (1 oz.) copper area on the LM2591HVS side of the board, and approximately 16 in2 of copper on the other side of the p-c board. See application hints in this data sheet and the thermal model in Switchers Made Simple available at http://power.national.com. Typical Performance Characteristics (Circuit of Figure 1) Normalized Output Voltage Line Regulation 10129302 10129303 Efficiency Switch Saturation Voltage 10129304 10129305 www.national.com 4 |
类似零件编号 - LM2591 |
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类似说明 - LM2591 |
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