LM2593HVT-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2593HVT-3.3/NOPB is a high-voltage step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments (originating from National Semiconductor). It provides a fixed 3.3V output with a maximum current of 2A. The device operates with an input voltage range of 4.5V to 60V and features a fixed switching frequency of 150kHz. It utilizes a TO-220-7 package for through-hole mounting and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for high voltage operation up to 60V input
• Fixed internal switching frequency eliminates external timing component requirements
• Includes thermal shutdown and current limit protection for enhanced reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power architectures
• Pre-regulator stages for downstream linear regulators
• Efficient buck conversion for battery-powered systems requiring high input voltage tolerance

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the ordering suffix matches the specific package variant required. Confirm RoHS compliance status via the latest datasheet revision. Cross-reference pinouts between legacy National Semiconductor documentation and current TI specifications to ensure compatibility during integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output at 2A is required with a wide input voltage range up to 60V. The TO-220-7 package is suitable for applications needing robust thermal dissipation without active cooling. Consider the 150kHz fixed frequency for standard EMI filtering designs. Evaluate thermal performance based on the specific ambient temperature and PCB copper area available for heat sinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2593HV series of SIMPLE SWITCHER power converters. These devices are designed to simplify the design of step-down (buck) switching regulators. The series offers various fixed output voltages and adjustable versions, catering to diverse power supply needs in industrial and commercial applications while maintaining high efficiency and low component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2593HVT-3.3/NOPB serves as the direct equivalent replacement for older LM2593HVT-3.3 parts. Verify pinout compatibility with existing board layouts. Check if alternative packages like D2PAK (LM2593VS) are acceptable for redesigns.