LA5774-E

Voltage Regulators - DC DC Switching Regulators Overview

The LA5774-E is a separately-excited step-down switching regulator manufactured by onsemi. It operates as a DC-to-DC converter with a Buck topology, delivering a fixed output voltage of 3.3 V at a maximum output current of 1.5 A. The device supports a single output channel and functions within a switching frequency range of 160 kHz. Designed for surface-mount installation in an SMP-5 package, it ensures reliable performance across an extended operating temperature range from -30°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Implements a separately-excited Buck topology for efficient DC-to-DC conversion
• Provides regulated 3.3 V output capable of sourcing up to 1.5 A load current
• Operates with a fixed switching frequency of 160 kHz for stable regulation
• Supports wide ambient temperature operation from -30°C to +125°C

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-to-DC power supply conversion
• Embedded systems requiring 3.3 V logic rails
• Industrial control modules
• Consumer electronics power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific packaging configuration prior to acquisition. Note that availability may be limited due to end-of-life status; validate current stock levels and lead times with suppliers before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with moderate current demands up to 1.5 A. The separate excitation requirement necessitates an external clock or drive signal source. Ensure the application environment stays within the specified -30°C to +125°C thermal limits and that the SMP-5 package fits the PCB layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

The LA5774-E belongs to the LA5774MP series of switching regulators. It serves as a specialized voltage converter within onsemi's power management portfolio, designed for applications needing isolated control signals for the switching element. This part complements other PMIC solutions offering integrated or self-excited topologies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Evaluate functional equivalents based on Buck topology, 3.3 V output, 1.5 A current rating, and SMP-5 package compatibility.