HomedatasheetLM2674LD-3.3/NOPB

LM2674LD-3.3/NOPB Datasheet

DC/DC Switching Converters
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Description

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
Features

Parameters

[{"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

SEMTECH [SEMTECH CORPORATION]
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