LM2671M-12

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2671 SNVS008L – SEPTEMBER 1998 – REVISED JUNE 2016 LM2671 SIMPLE SWITCHER® Power Converter High Efficiency 500-mA Step-Down Voltage Regulator With Features 1 Features 1 Efficiency up to 96% Available in 8-Pin SOIC, PDIP, and WSON Packages Simple and Easy to Design With Requires Only 5 External Components Uses Readily Available Standard Inductors 3.3-V, 5-V, 12-V, and Adjustable Output Versions Adjustable Version Output Voltage Range: 1.21 V to 37 V ±1.5% Maximum Output Voltage Tolerance Over Line and Load Conditions Ensured 500-mA Output Load Current 0.25-Ω DMOS Output Switch Wide Input Voltage Range: 8 V to 40 V 260-kHz Fixed Frequency Internal Oscillator TTL Shutdown Capability, Low Power Standby Mode Soft-Start and Frequency Synchronization Thermal Shutdown and Current-Limit Protection 2 Applications Simple High Efficiency (> 90%) Step-Down (Buck) Regulators Efficient Preregulator for Linear Regulators 3 Description The LM2671 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 3.3 V, 5 V, 12 V, and an adjustable output version. Requiring a minimum number of external components, these reg...