LM2596HVS-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2596HVS-3.3 is a high-voltage step-down switching regulator integrated circuit designed for buck converter applications. It supports an input voltage range of 4.5V to 60V and provides a fixed 3.3V output with a guaranteed maximum load current of 3A. Operating at a fixed 150kHz PWM frequency, the device achieves conversion efficiencies up to 92%. It incorporates internal frequency compensation, requiring minimal external components. The unit features comprehensive protection mechanisms including overcurrent, thermal shutdown, and short-circuit protection, ensuring reliable operation within a -40°C to +125°C temperature range.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• High-voltage input capability supporting up to 60V for broad application compatibility
• Fixed 3.3V output with 3A drive capacity and excellent line/load regulation
• Integrated 150kHz fixed-frequency oscillator enabling compact filter design
• Built-in thermal and current limiting protection for enhanced system safety

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive power management systems
• Battery-powered equipment
• Communication infrastructure
• Industrial control circuits
• Consumer electronics power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer marking on the component surface to confirm UMW origin, as multiple vendors produce this part number. Ensure the package type matches the TO-263-5 specification required for your PCB layout. Cross-reference the datasheet revision date with your design requirements to confirm parameter consistency. Request sample units for thermal performance validation under actual load conditions before mass production.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select the LM2596HVS-3.3 when a stable 3.3V rail is required from inputs exceeding 4.5V, particularly where input voltages may reach 60V. This fixed-output variant simplifies design by eliminating external feedback resistors needed in adjustable versions. Consider the thermal dissipation requirements of the TO-263-5 package if operating near the 3A limit. Verify that the 150kHz switching frequency aligns with EMI constraints and available passive component sizes.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2596HV series of monolithic integrated circuits providing all active functions for a buck switcher. The 'HVS' designation indicates the high-voltage input version capable of handling up to 60V, distinguishing it from standard LM2596 variants limited to lower input voltages. Manufactured by UMW, it serves as a direct functional replacement for similar parts from other vendors within the same family, maintaining pin compatibility and electrical specifications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2596HVS-3.3 from HGSEMI, TDSEMIC, and HGC. These alternatives share identical pinouts and core electrical characteristics. Verify package tolerance and marking codes when swapping manufacturers to ensure mechanical fit and traceability.