Professional IC Distribution & Technical Solutions

The MAX253ESA is a high-efficiency, low-power flyback transformer driver manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

Specifications:

• Manufacturer: Maxim Integrated
• Package: 8-SOIC (150mil)
• Operating Voltage Range: 4.5V to 5.5V
• Output Voltage: Adjustable via external transformer
• Switching Frequency: 100kHz (typical)
• Maximum Output Power: 2W (typical)
• Operating Temperature Range: -40°C to +85°C
• Primary Current Limit: 350mA (typical)
• Standby Current: 1.5mA (typical)

Descriptions:

The MAX253ESA is a monolithic, transformer driver IC designed for isolated power supply applications. It integrates a power MOSFET and control circuitry to efficiently drive a flyback transformer, making it suitable for low-power isolated DC-DC conversion. The device operates from a single 5V supply and provides a regulated output through an external transformer and feedback loop.

Features:

• Integrated 100V, 350mA power MOSFET
• Low standby current (1.5mA typical)
• Efficient flyback topology for isolated power conversion
• Internal oscillator with 100kHz switching frequency
• Soft-start to reduce inrush current
• Thermal shutdown protection
• Current-mode control for improved stability
• Adjustable output voltage via transformer turns ratio

The MAX253ESA is commonly used in telecom, industrial, and medical applications requiring compact, isolated power supplies.