LTC1478CS#TRPBF

Overview

The LTC1478CS#TRPBF is a dual-channel protected high-side power switch IC manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.7V to 5.5V and features an SOIC-16 surface-mount package. The device provides two independent output channels with a maximum continuous current rating of 1A per channel. It incorporates built-in fault protection mechanisms, including fixed current limiting at 2A and thermal overload shutdown. The typical on-resistance is specified at 70mΩ, ensuring efficient power delivery while maintaining low standby current consumption.

Feature Summary

• Dual-channel high-side switching capability with integrated charge pump for full enhancement of internal NMOS switches
• Built-in short-circuit protection with 2A current limit and thermal overload protection circuitry
• Absence of parasitic body diodes prevents reverse current flow when the switch is off and output exceeds input voltage

Applications

• Laptop power management systems
• Hot-swap circuit board protection
• Peripheral power protection circuits
• Power/battery switching applications

Procurement Notes

Verify that the specific suffix #TRPBF denotes the tape-and-reel packaging variant rather than the tube-packaged #PBF version. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure the ordering part number matches the required dual-channel configuration and SOIC-16 footprint specifications exactly.

Selection Notes

Select this component for applications requiring dual isolated high-side switching with robust fault protection. The absence of parasitic body diodes makes it suitable for scenarios where reverse current blocking is critical. Evaluate the 70mΩ on-resistance against thermal requirements for the intended load current. Ensure the control logic interface aligns with the non-inverting input type specification.

Part Context

This component belongs to the LTC147x series of protected high-side switches from Analog Devices. It serves as the dual-channel counterpart to the single-channel LTC1477. The series is designed for low-voltage power distribution applications requiring compact integration of switching and protection functions in small outline packages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.