The MC34017-1P is a monolithic high voltage switching regulator designed by Freescale Semiconductor (now NXP Semiconductors). It's specifically designed for off-line converters and high voltage buck regulators. The device integrates all the necessary control and protection functions, simplifying the design of power supplies.

Applications

• Off-line converters
• High voltage buck regulators
• Power supplies for consumer electronics
• Industrial power supplies
• Battery chargers

Features

• High voltage operation (up to 40V)
• Internal oscillator with adjustable frequency
• Current limiting protection
• Thermal shutdown protection
• Undervoltage lockout (UVLO)
• Soft-start function
• Cycle-by-cycle current limiting

Benefits

• High voltage operation simplifies the design of off-line power supplies.
• Adjustable oscillator frequency allows for optimization of converter performance.
• Comprehensive protection features ensure safe and reliable operation.
• Soft-start function reduces inrush current during startup.
• Cycle-by-cycle current limiting protects the switching transistor.

Technical Specifications

Input Voltage: Up to 40V
Switching Frequency: Adjustable
Operating Temperature Range: -40°C to +85°C
Package: PDIP (Plastic Dual In-Line Package)