LFC789D25CDR

Overview

The LFC789D25CDR is a dual linear FET controller manufactured by Texas Instruments, classified as a low-dropout voltage controller. It provides two fixed output channels with a regulated voltage of 2.5 V and supports an output current of 3 A per channel. The device operates within a temperature range of 0°C to +70°C and features a quiescent supply current of 2 mA. It is housed in an SOIC-8 surface-mount package.

Feature Summary

• Dual-channel architecture providing independent regulation for two separate outputs
• Fixed 2.5 V output configuration ensuring stable voltage delivery
• High current capability supporting up to 3 A load requirements

Applications

• Multi-rail power distribution systems requiring dual regulated lines
• Embedded electronics utilizing 2.5 V logic or reference levels
• Industrial control modules operating within standard commercial temperature ranges

Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to confirm the dual linear FET controller specifications. Ensure the SOIC-8 package variant matches the required PCB footprint. Cross-reference the 2.5 V fixed output rating and 3 A current capacity with system design requirements before procurement.

Selection Notes

Select this component when a dual-output solution is necessary for space-constrained designs using surface-mount technology. The fixed 2.5 V output eliminates external resistor networks for voltage setting. Consider the 3 A current limit and SOIC-8 thermal performance relative to the expected load profile and ambient operating conditions.

Part Context

This component belongs to the Texas Instruments low-dropout voltage controller family, specifically designed for applications requiring multiple regulated rails from a single source. The LFC789 series utilizes linear FET topology to provide efficient regulation with minimal external components, distinguishing it from switching regulators in terms of noise and complexity.

Replacement Considerations

Consult official Texas Instruments substitution guides for verified alternatives. Generic equivalents may differ in pinout, current handling, or thermal characteristics. Do not assume functional compatibility without verifying datasheet parameters.