The LM2590HVSX-5.0 is a high-performance integrated circuit manufactured by Texas Instruments, designed to provide a fixed output voltage of 5.0V with high efficiency and reliability. This simple switcher is a part of the LM2590HV series, which are step-down voltage regulators capable of driving a 1A load with excellent line and load regulation.

This regulator is highly versatile and is suitable for a wide range of applications, including simple high-efficiency power supplies, positive to negative converter (buck-boost), or even as a pre-regulator for linear regulators. The device features a guaranteed 3% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring typically 50 μA standby current.

The LM2590HVSX-5.0 operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. This results in reduced board space and reduced component costs. The regulator is designed with a current limit to protect the device during overload conditions. Thermal shutdown and voltage over protection are also integrated features that ensure the longevity and safety of both the regulator and the system it is used in.

Key features of the LM2590HVSX-5.0 include:

• 3.3V, 5.0V, 12V, and adjustable output versions
• Adjustable version output voltage range: 1.23V to 37V (±4% max over line and load conditions)
• Guaranteed 1A output current
• Wide input voltage range up to 60V
• Requires only 4 external components
• 52 kHz fixed frequency internal oscillator
• TTL shutdown capability
• Low power standby mode
• High efficiency
• Uses readily available standard inductors
• Thermal shutdown and current limit protection

Whether you're designing a power supply for consumer electronics, industrial hardware, or automotive applications, the LM2590HVSX-5.0 offers a compact, efficient, and robust solution for your voltage regulation needs.