LM2674LD-3.3/NOPB Datasheet

DC/DC Switching Converters


The LM2674LD-3.3/NOPB series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500 mA load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.OV, 12V, and an adjustable output version.Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation (Patent Nos. 5,382,918 and 5,514,947) and a fixed frequency oscillator. The LM2674LD-3.3/NOPB series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Because of its very high efficiency (>90%), the copper traces on the printed circuit board are the only heat sinking needed. LM2674LD-3.3/NOPB Features • Efficiency up to 96%• Available in SOIC-8, 8-Pin PDIP and WSON Packages• Computer Design Software LM267X Made Simple (Version 6.0)• Simple and Easy to Design With• Requires Only 5 External Components• Uses Readily Available Standard Inductors• 3.3V, 5.OV, 12V, and Adjustable OutputVersions• Adjustable Version Output Voltage Range:1.21V to 37V• Adjustable Version Output Voltage Range:1.21V to 37V• Guaranteed 500mA Output Load Current• 0.2552 DMOS Output Switch• Wide Input Voltage Range: 8V to 40V• 260 kHz Fixed Frequency Internal Oscillator• TTL Shutdown Capability, Low Power Standby Mode• Thermal Shutdown and Current Limit Protection LM2674LD-3.3/NOPB Applications • Simple High Efficiency (>90%) Step-Down (Buck) Regulator• Efficient Pre-Regulator for Linear Regulators• Positive-to-Negative Converter


[{"Name":"Input Voltage MAX","Value":"40 V"},{"Name":"Switching Frequency","Value":"260 kHz"},{"Name":"Output Voltage","Value":"3.3 V"},{"Name":"Output Current","Value":"500 mA"},{"Name":"Maximum Operating Temperature","Value":"+ 125 C"},{"Name":"Input Voltage MIN","Value":"6.5 V"},{"Name":"Minimum Operating Temperature","Value":"- 40 C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
Request for Datasheet

  • Part No     :
  • Your Email:
  • Content     :

related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us


One to One Customer Service