The MC34084AP is a monolithic high voltage switching regulator specifically designed to provide all the necessary features to implement cost effective buck, boost, and buck-boost regulators. This device contains an internal temperature compensated bandgap reference, fixed frequency oscillator, error amplifier, PWM control circuitry, and robust NPN output switch with overcurrent protection. It is designed for off-line and DC-to-DC regulator applications.

Applications

• Off-line power supplies
• DC-to-DC converters
• Battery chargers
• LED lighting
• Power adapters

Features

• Operating Voltage: Up to 40V
• Output Switch Current: 1.5A peak
• Fixed Frequency Operation: 300 kHz (typical)
• Internal Overcurrent Protection
• Internal Thermal Shutdown
• Internal Soft-Start
• Low Startup Current: 100 μA (typical)
• High Efficiency Operation

Benefits

• Cost-Effective Solution: Integrated features reduce external component count, lowering overall system cost.
• Versatile Applications: Suitable for a wide range of power supply designs, including buck, boost, and buck-boost topologies.
• Enhanced Reliability: Built-in overcurrent and thermal protection ensure robust operation and prevent device damage.
• Simplified Design: Fixed frequency operation and internal soft-start simplify the design process and reduce development time.
• High Efficiency: Minimizes power losses and improves overall system efficiency.

Additional Details

The MC34084AP is available in a DIP-8 package. It offers a wide input voltage range and high output current capability, making it a suitable choice for various power supply applications. Its internal protection features and simplified design contribute to a reliable and easy-to-use solution for power management.