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Home » NEWEST Products » New by Manufacturer » Texas Instruments » LM34923 Step Down Switching Regulator - TI
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TI LM34923 Step Down Switching Regulator

Texas Instruments LM34923 80V, 600mA Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient buck bias regulator. TI LM34923 Step Down Switching Regulator is a high voltage device containing an 80V N-channel MOSFET switch and a startup regulator. LM34923 requires no loop compensation, resulting in fast transient response. The operating frequency remains constant with line and load variations. This TI device is ideal for use in non-isolated telecommunication buck regulators and secondary high voltage post regulators as well as +42V automotive systems.

TI LM34923 EVAL evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 6V to 75V. The circuit delivers load currents to 500 mA, with current limit set at a nominal 1A.

LM34923 Features
  • Operating input voltage range: 6V to 75V
  • Integrated 80V, N-Channel Buck Switch
  • Internal start-up regulator
  • No Loop compensation required
  • Ultra-Fast Transient Response
  • Operating frequency remains constant with line and load variations
  • Adjustable output voltage from 2.5V
  • Precision internal reference, ±2.5%
  • Intelligent current limit reduces foldback
  • Programmable Input UV detector with status flag output
  • Pre-charge switch enables bootstrap gate drive with no load
  • Thermal shutdown
LM34923 Applications
  • Non-Isolated Telecommunication Buck Regulator
  • Secondary High Voltage Post Regulator
  • +42V Automotive Systems

Functional Diagram

Functional Diagram

Typical Application

Typical Application
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  • Lighting
  • Optoelectronics|Drivers|Semiconductors|Integrated Circuits|Driver ICs