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LM3551 数据表(PDF) 3 Page - Texas Instruments |
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LM3551 数据表(HTML) 3 Page - Texas Instruments |
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3 / 23 page  LM3551, LM3552 www.ti.com SNVS371C – AUGUST 2005 – REVISED MARCH 2011 Absolute Maximum Ratings (1) (2) (3) VIN pin: Voltage to GND 7.5V SW pin: Voltage to GND 21V FB pin: Voltage to GND 7V VC pin: Voltage to GND 1.26V ± 0.3V SD,T/F pins: Voltage to GND 7.5V FET-T, FET-F: Voltage to GND 6V Continuous Power Dissipation(4) Internally Limited Junction Temperature (TJ-MAX ) 150°C Storage Temperature Range -65°C to +150 ESD Rating(5) Human Body Model 2.0kV (1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. (2) All voltages are with respect to the potential at the GND pin. (3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. (4) Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ=140ºC (typ.) and disengages at TJ=120ºC (typ.). (5) The human body model is a 100pF capacitor discharged through a 1.5k Ω resistor into each pin. (MIL-STD-883 3015.7) Operating Ratings (1) (2) Input Voltage Range 2.7V to 5.5V SW Voltage Max.(3) 20V Junction Temperature (TJ) Range -40°C to +110°C Ambient Temperature (TA) Range (4) -40°C to +85°C (1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. (2) All voltages are with respect to the potential at the GND pin. (3) Maximum recommended SW pin voltage when the OVP pin is grounded. (4) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP = 110ºC), the maximum power dissipation of the device in the application (PD-MAX), and the junction-to-ambient thermal resistance of the part/package in the application ( θJA), as given by the following equation: TA-MAX = TJ-MAX-OP – (θJA × PD-MAX). Thermal Properties Junction-to-Ambient Thermal Resistance ( θJA), NHL0014B Package (1) 37.3°C/W (1) Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists, special care must be paid to thermal dissipation issues in board design. Copyright © 2005–2011, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3551 LM3552 |
类似零件编号 - LM3551_14 |
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类似说明 - LM3551_14 |
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