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LM2678SX-5.0 датащи(PDF) 1 Page - Texas Instruments |
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LM2678SX-5.0 датащи(HTML) 1 Page - Texas Instruments |
1 / 36 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM2678 SNVS029J – MARCH 2000 – REVISED JULY 2016 LM2678 SIMPLE SWITCHER® High Efficiency 5-A Step-Down Voltage Regulator 1 1 Features 1 • Efficiency Up to 92% • Simple and Easy to Design Using Off-the-Shelf External Components • 120-mΩ DMOS Output Switch • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions • 50-μA Standby Current When Switched OFF • ±2% Maximum Output Tolerance Over Full Line and Load Conditions • Wide Input Voltage Range: 8 V to 40 V • 260-kHz Fixed Frequency Internal Oscillator • −40 to 125°C Operating Junction Temperature Range 2 Applications • Simple-to-Design, High Efficiency (>90%) Step- Down Switching Regulators • Efficient System Preregulator for Linear Voltage Regulators • Battery Chargers 3 Description The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON- resistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version. The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2678 are available from several manufacturers to greatly simplify the design process. The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/OFF control input that can power down the regulator to a low 50- μA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM2678 TO-263 (7) 10.10 mm × 8.89 mm TO-220 (7) 14.986 mm × 10.16 mm VSON (14) 6.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application |
Аналогичный номер детали - LM2678SX-5.0 |
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Аналогичное описание - LM2678SX-5.0 |
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