LM5009 - Texas Instruments

LM5009 Step-Down Switching Regulator

The LM5009 step-down switching regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator. This device is capable of driving a 150-mA load current from a 9.5-V to 95-V input source. The switching frequency can exceed 600 kHz, depending on the input and output voltages. The output voltage can be set from 2.5 V to 85.

Features

•1 Integrated N-Channel MOSFET
• 150-mA Output Current Capability
• Ultra-Fast Transient Response
• No Loop Compensation Required
• VIN Feed-Forward Provides Constant Operating Frequency
• Switching Frequency Can Exceed 600 kHz
• Highly Efficient Operation
• 2% Accurate 2.5-V Feedback From
  –40°C to +125°C
• Internal Startup Regulator
• Intelligent Current Limit Protection
• External Shutdown Control
• Thermal Shutdown
• 8-Pin VSSOP and Thermally-Enhanced 8-Pin WSON Packages 2 Applications
• Heat Sink Eliminator for Classic Linear Regulator Applications
• 12-V, 24-V, 36-V, and 48-V Rectified AC.