LA5779-E

Voltage Regulators - DC DC Switching Regulators Overview

The LA5779MP-E is a step-down switching voltage regulator manufactured by onsemi, belonging to the LA5779MP series. It operates as a buck converter with a single output channel capable of delivering up to 1.5 A. The device accepts an input voltage range from 4.5 V to 28 V and provides a fixed 3.3 V output. It features a switching frequency of 160 kHz and supports surface-mount installation in an SMP-5 package. The component functions within a temperature range of -30°C to +125°C and includes load regulation of 30 mV.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a buck topology for efficient DC-DC conversion
• Provides fixed 3.3 V output with integrated control circuitry
• Supports high-temperature operation suitable for industrial environments

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power supply systems
• Embedded electronics requiring regulated 3.3 V rails
• Automotive auxiliary power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify current availability status as the part may be discontinued or subject to limited supply constraints. Confirm that the SMP-5 package matches design requirements. Ensure compliance with RoHS directives if applicable. Check for official End-of-Life notifications from onsemi prior to finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output at 1.5 A is required from a wide input range up to 28 V. Consider the 160 kHz switching frequency for EMI management. Evaluate thermal performance within the -30°C to +125°C operating range. Compare against other LA5779MP variants if higher current or different voltage outputs are needed.

Voltage Regulators - DC DC Switching Regulators Part Context

The LA5779MP-E is part of onsemi's LA5779MP family of simple DC-DC converters. These devices are designed for applications requiring compact size and reliable performance. The series typically offers integrated switches and control logic to minimize external component count. This specific variant provides a fixed 3.3 V output optimized for digital logic power supplies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult onsemi technical support for direct replacements or pin-compatible alternatives.