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LM2596T-5.0 Folha de dados(PDF) 5 Page - Texas Instruments |
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LM2596T-5.0 Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 42 page LM2596 www.ti.com SNVS124C – NOVEMBER 1999 – REVISED APRIL 2013 All Output Voltage Versions Electrical Characteristics (continued) Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V version. ILOAD = 500 mA LM2596-XX Units Symbol Parameter Conditions Typ Limit (Limits) (1) (2) ISTBY Standby Quiescent Current ON/OFF pin = 5V (OFF) (7) 80 μA 200/250 μA(max) θJC Thermal Resistance TO-220 or TO-263 Package, Junction to Case 2 °C/W θJA TO-220 Package, Junction to Ambient (8) 50 °C/W θJA TO-263 Package, Junction to Ambient (9) 50 °C/W θJA TO-263 Package, Junction to Ambient (10) 30 °C/W θJA TO-263 Package, Junction to Ambient (11) 20 °C/W ON/OFF CONTROL Test Circuit Figure 20 ON /OFF Pin Logic Input 1.3 V VIH Threshold Voltage Low (Regulator ON) 0.6 V(max) VIL High (Regulator OFF) 2.0 V(min) IH ON /OFF Pin Input Current VLOGIC = 2.5V (Regulator OFF) 5 μA 15 μA(max) IL VLOGIC = 0.5V (Regulator ON) 0.02 μA 5 μA(max) (8) Junction to ambient thermal resistance (no external heat sink) for the TO-220 package mounted vertically, with the leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2. (9) Junction to ambient thermal resistance with the TO-263 package tab soldered to a single printed circuit board with 0.5 in2 of (1 oz.) copper area. (10) 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. (11) 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 LM2596S side of the board, and approximately 16 in2 of copper on the other side of the p-c board. See Application Information in this data sheet and the thermal model in Switchers Made Simple™ version 4.3 software. Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2596 |
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