LA5774-FA-E

Voltage Regulators - DC DC Switching Regulators Overview

The LA5774-FA-E is a separately-excited step-down switching regulator IC manufactured by onsemi. It operates as a buck converter with an input voltage range of 2.3V to 18V and provides a positive adjustable output voltage starting from 1.26V. The device supports up to 3.1A of switch current and functions at a fixed switching frequency of 160 kHz. It is housed in a TO-220-5 package with formed leads, designed for surface mount or through-hole applications within an operating temperature range of -30°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides regulated DC-DC conversion using a separately-excited buck topology
• Supports wide input voltage ranges from low-voltage sources up to 18V
• Delivers high output current capability suitable for power-intensive loads

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring stable voltage regulation
• Embedded electronics powered by variable input supplies
• General-purpose DC-DC conversion in consumer devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'FA' against the official datasheet to confirm lead form and thermal characteristics. Confirm availability status as distribution channels may list this component as obsolete or limited stock. Ensure the TO-220-5 package matches your PCB footprint requirements before ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, high-current buck regulator is needed with a wide input range. The TO-220-5 package facilitates heat dissipation for higher current loads compared to smaller SMD packages. Verify that the required output voltage falls within the adjustable range supported by the external resistor network.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LA5774 series of switching regulators. It is distinct from other variants like the LA5774MP which may use different packaging such as SMP-5. The FA suffix specifically denotes the TO-220-5 through-hole compatible package, differentiating it from surface-mount-only versions in the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other parts within the LA5774 family with matching pinouts. Verify electrical parameters such as switching frequency and maximum current against the original design requirements before swapping components.