LM3489EVAL/NOPB Hysteretic PFET Buck Controller with Enable Pin angled board image

LM3489EVAL/NOPB

Hysteretic PFET Buck Controller with Enable Pin

Pricing

Qty Price
+

Features for the LM3489EVAL

  • Wide 4.5V to 35V input range
  • 1.239V to VIN adjustable output range
  • High efficiency 93%
  • 1.3% ( 2% over temp) internal reference
  • 100% duty cycle operation
  • Maximum operation frequency > 1MHz
  • Current limit protection
  • Dedicated enable pin (on if unconnected)
  • Shutdown mode draws on 7uA supply current
  • MSOP-8

Applications

  • Set-top Box
  • DSL/Cable Modem
  • PC/IA
  • Auto PC
  • TFT Monitor
  • Battery Powered Portable Applications
  • Distributed Power Systems
  • Always On Power
  • High Power LED Driver

 

Description for the LM3489EVAL

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 concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout, and 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. A dedicated Enable Pin (Enabled if left unconnected) provides a shutdown mode drawing only 7 µA.

Pricing

Qty Price
+