Part # LM3475 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM3475 Hysteretic PFET Buck Controller


Part Details:

LM3475 January 2005 Hysteretic LM3475Hysteretic PFET Buck ControllerGeneral Description Features The LM3475 is a hysteretic P-FET buck controller designed n Easy to use control methodology to support a wide range of high efficiency applications in a PFET n 0.8V to V adjustable output range IN very small SOT23-5 package. The hysteretic control scheme n High Efficiency (90% typical) has several advantages, including simple system design n ±0.9% (±1.5% over temp) feedback voltage with no external compensation, stable operation with a wide n 100% duty cycle capable range of components, and extremely fast transient re- Buck n Maximum operating frequency up to 2MHz sponse. Hysteretic control also provides high efficiency op-eration, even at light loads. The PFET architecture allows for n Internal Soft-Start low component count as well as 100% duty cycle and ultra- n Enable pin low dropout operation. n SOT23-5 package Controller Applicationsn TFT Monitor n Auto PC n Vehicle Security n Navigation Systems n Notebook Standby Supply n Battery Powered Portable Applications n Distributed Power Systems Typical Application Circuit 20070101 © 2005 National Semiconductor Corporation DS200701 www.national.com Connection Diagram LM3475 Top View 20070102 5 Lead Plastic SOT23-5 NS package Number MF05A Package Marking and Ordering Information Order Number Package Type Package Marking Supplied As: LM3475MF SOT23-5 S65B


Please click the following link to download the datasheet:

LM3475.pdf Datasheet