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LM2675
SNVS129F – MAY 2004 – R...
Product Folder
Sample & Buy
Technical Documents
Tools & Software
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LM2675
SNVS129F – MAY 2004 – REVISED JUNE 2016
LM2675 SIMPLE SWITCHER® Power Converter High Efficiency 1-A Step-Down
Voltage Regulator
1 Features
1 Efficiency up to 96% Available in 8-Pin SOIC, PDIP, and 16-Pin WSON
Package Requires only 5 External Components 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 1-A Output Load Current Wide Input
Voltage Range: 8 V to 40 V 260-kHz Fixed Frequency Internal Oscillator TTL Shutdown Capability, Low-Power Standby
Mode Thermal Shutdown and Current Limit Protection
2 Applications
Simple High Efficiency (>90%) Step-Down (Buck) Regulator
Efficient Preregulator for Linear Regulators Positive-to-Negative Converter
3 Description
The LM2675 series of regulators are monolithic integrated DC-DC converter circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A 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 regulators are simple to use and include patented internal frequency compensation and a fixed frequency oscillator.
The LM2675 ...