The LM2596HV is a high-efficiency, monolithic step-down voltage regulator specifically designed for applications that demand stable and reliable power conversion. Engineered to handle up to 60V input and deliver 3A continuous output current, this high-voltage switching regulator is ideal for reducing higher voltage inputs to efficient, usable DC power in embedded systems, industrial electronics, automotive applications, and more.

Whether you choose the fixed output versions (3.3V, 5V, 12V) or the adjustable output version (1.2V to 57V), the LM2596HV ensures excellent line and load regulation. It features an internal oscillator with a fixed 150kHz switching frequency, allowing for compact external component sizing and faster response times.

Features:

• Input Voltage Range: Up to 60V

• Output Current: Guaranteed up to 3A continuous

• Available Output Versions: 3.3V, 5V, 12V fixed and adjustable (1.2V to 57V)

• Package Options: TO-220, TO-263 (surface-mount), SOP-8 (up to 2A)

• Low Standby Current: Typically 30μA for power-efficient operation

• High Efficiency: Optimized for minimal energy loss

• Line and Load Regulation: Maintains output within ±4%

• Protection Features:

  • Thermal shutdown

  • Current limit protection

  • Output short protection (frequency reduction mechanism)

• Minimal External Components: Requires only 4 external parts for standard implementation

• Internal Oscillator: Fixed 150kHz switching frequency ensures predictable performance and simplified design

Applications:

• High-efficiency DC-DC step-down power supplies

• Embedded system power management

• Automotive electronics and industrial control systems

• On-board voltage regulators for communication and computing devices

• Pre-regulators for linear regulators to improve overall efficiency