LM3489 Datasheet - National Semiconductor

LM3489 Hysteretic PFET Buck Controller

The LM3489 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, cost effective, switching buck regulator for a wide range of applications. The hysteretic control architecture provides for simple design without any control loop stability con.

LM3489 Features

* Easy to use control methodology No control loop compensation required Wide 4.5V to 35V input range 1.239V to VIN adjustable output range Typical Application Circuit 20186908 © 2008 National Semiconductor Corporation 201869 www.national.com LM3489/LM3489Q Connection Dia

LM3489_NationalSemiconductor.pdf