MAX743EWE+

The MAx743 DC-DC converter IC contains all the active circuitry needed to build small, dual-output power supplies. Relying on simple two-terminal inductors rather than transformers, the MAx743 regulates both outputs independently to within ±4% overall conditions of line voltage, temperature, and load current.

Applications

• DC-DC Converter Module Replacement
• Distributed Power Systems
• Computer Peripherals
• Portable Instruments

Key features

• The MAx743 typically provides 75% to 82% efficiency over most of the load range.
• It operates with current mode feedback at 200kHz, so it can be used with small, lightweight external components.
• Also, ripple and noise are easy to filter.
• The MAX743 is inherently reliable due to its internal power transistors and monolithic construction.
• Thermal shutdown prevents overheating, and cycle-by-cycle current sensing protects the power-switch transistors.
• Other features include undervoltage lock-out and programmable soft-start.
• Generates ±100mA or ±125mA
• ±4% Output Tolerance Max Over Temp, Line, and Load
• 82% Typ Efficiency
• Low-Noise, Current-Mode Feedback
• On-Board Current Limiting
• Thermal Shutdown Protection
• Undervoltage Lock-Out and Soft-Start
• Switches From ±15V to ±12V Under Logic Control
• Evaluation Kit Available
• Internal Power MoSFETs