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LM2676SDX-ADJ Datasheet(PDF) 1 Page - Texas Instruments |
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LM2676SDX-ADJ Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page LM2676 www.ti.com SNVS031J – APRIL 2000 – REVISED APRIL 2013 LM2676 SIMPLE SWITCHER® High Efficiency 3A Step-Down Voltage Regulator Check for Samples: LM2676 1 FEATURES DESCRIPTION The LM2676 series of regulators are monolithic 2 • Efficiency Up to 94% integrated circuits which provide all of the active • Simple and Easy to Design with (Using Off- functions for a step-down (buck) switching regulator The-Shelf External Components) capable of driving up to 3A loads with excellent line • 150 m Ω DMOS Output Switch and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON- • 3.3V, 5V and 12V Fixed Output and Adjustable resistance DMOS power switch. The series consists (1.2V to 37V) Versions of fixed output voltages of 3.3V, 5V and 12V and an • 50 μA Standby Current When Switched OFF adjustable output version. • ±2% Maximum Output Tolerance Over Full The SIMPLE SWITCHER concept provides for a Line and Load Conditions complete design using a minimum number of external • Wide Input Voltage Range: 8V to 40V components. A high fixed frequency oscillator (260KHz) allows the use of physically smaller sized • 260 KHz Fixed Frequency Internal Oscillator components. A family of standard inductors for use • −40 to +125°C Operating Junction Temperature with the LM2676 are available from several Range manufacturers to greatly simplify the design process. The LM2676 series also has built in thermal APPLICATIONS shutdown, current limiting and an ON/OFF control • Simple to Design, High Efficiency (>90%) Step- input that can power down the regulator to a low Down Switching Regulators 50 μA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock • Efficient System Pre-Regulator for Linear frequency is controlled to within a ±11% tolerance. Voltage Regulators • Battery Chargers Typical Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SIMPLE SWITCHER, Switchers Made Simple are registered trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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