LFC789D25CPW

Overview

The LFC789D25CPW is a dual linear FET controller from Texas Instruments designed to simplify the design of dual power supplies. It integrates two independent controllers for regulating fixed and adjustable outputs within an 8-TSSOP package. The device supports input voltages ranging from 9V to 16V and provides regulated outputs between 900mV and 3.6V with a maximum output current capability of 3A. It features ±2% maximum regulation accuracy across temperature and load conditions, operating from 1mA to 3A. The component operates within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates two independent linear FET controllers for simultaneous regulation of fixed and adjustable voltage rails
• Provides high precision regulation with ±2% maximum error across full temperature and load ranges
• Supports wide input voltage range suitable for various industrial and consumer power architectures

Applications

• Dual rail power supply designs for embedded systems
• FPGA power management requiring separate fixed and adjustable rails
• Industrial control systems needing precise voltage regulation

Procurement Notes

Verify the specific suffix CPW indicates the 8-TSSOP package variant when sourcing. Confirm the manufacturer is Texas Instruments to ensure authenticity. Check for RoHS compliance status if required by your assembly process. Ensure the ordering part number matches the exact pinout and thermal characteristics needed for your PCB layout.

Selection Notes

Select this component when a dual-channel solution is required to reduce board space and component count compared to using discrete regulators. It is suitable for applications needing both a stable fixed voltage and an adjustable rail from a single IC. Consider the 8-TSSOP package constraints for thermal dissipation at higher load currents up to 3A.

Part Context

This part belongs to Texas Instruments' family of low-dropout voltage regulator controllers. These devices are engineered to drive external N-channel MOSFETs for efficient power conversion. The LFC789 series specifically targets applications requiring multiple regulated outputs with high accuracy and low quiescent current consumption.

Replacement Considerations

The LFC789D25CPWR is a reel-based version of the same functional device in the identical 8-TSSOP package. Verify that the tape-and-reel packaging meets your automated assembly requirements before substituting.