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LM3475 Datasheet PDF - National ->Texas Instruments

Part NameDescriptionManufacturer
LM3475 Hysteretic PFET Buck Controller National-Semiconductor
National ->Texas Instruments National-Semiconductor
LM3475 Datasheet PDF : LM3475 pdf   
LM3475 image

General Description
The LM3475 is a hysteretic P-FET buck controller designed to support a wide range of high efficiency applications in a very small SOT23-5 package. The hysteretic control scheme has several advantages, including simple system design with no external compensation, stable operation with a wide range of components, and extremely fast transient response. Hysteretic control also provides high efficiency operation, even at light loads. The PFET architecture allows for low component count as well as 100% duty cycle and ultra low dropout operation.

Features
■ Easy to use control methodology
■ 0.8V to VIN adjustable output range
■ High Efficiency (90% typical)
■ ±0.9% (±1.5% over temp) feedback voltage
■ 100% duty cycle capable
■ Maximum operating frequency up to 2MHz
■ Internal Soft-Start
■ Enable pin
■ SOT23-5 package

Applications
■ TFT Monitor
■ Auto PC
■ Vehicle Security
■ Navigation Systems
■ Notebook Standby Supply
■ Battery Powered Portable Applications
■ Distributed Power Systems

 

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