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LM22670 - Step-Down Voltage Regulator

General Description

The LM22670 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics.

Key Features

  • such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in. The switching clock frequency is provided by an internal fixed frequency oscillator which operates at 500 kHz. The switching frequency can also be adjusted with an external resistor or synchronized to an external clock up to 1MHz. It is also possible to selfsynchronize multiple regulators to share the same switching frequency. The LM22670 series also has built in thermal shu.

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Datasheet Details

Part number LM22670
Manufacturer National Semiconductor Corporation
File Size 518.07 KB
Description Step-Down Voltage Regulator
Datasheet download datasheet LM22670 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM22670 3A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Synchronization or Adjustable Switching Frequency October 17, 2008 LM22670 3A SIMPLE SWITCHER®, Step-Down Voltage Regulator www.datasheet4u.com with Synchronization or Adjustable Switching Frequency General Description The LM22670 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance N-channel MOSFET. The series consists of a fixed 5V output and an adjustable version.