LTC1477CS8#TRPBF

Overview

The LTC1477CS8#TRPBF is a single-channel protected high-side power switch IC from Analog Devices, housed in an 8-pin SOIC package. It operates within a supply voltage range of 2.7 V to 5.5 V and supports a maximum continuous current limit of 2 A. The device features a low on-resistance of 200 mΩ (typical 70 mΩ) and includes built-in charge pump circuitry for full enhancement of the internal NMOS switch. Key electrical parameters include a shutdown quiescent current of 0.01 μA and controlled rise/fall times of 1 ms.

Feature Summary

• Integrated charge pump generates gate drive voltage exceeding supply level for enhanced NMOS performance
• Dual-stage protection system comprising programmable short-circuit current limiting and thermal overload shutdown
• Absence of parasitic body diode prevents reverse current flow when output exceeds input voltage

Applications

• Laptop power management systems
• Peripheral power protection circuits
• Hot-swap board protection applications

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm tape-and-reel packaging configuration. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component for applications requiring precise high-side switching with integrated fault protection. The absence of a parasitic body diode makes it suitable for scenarios where reverse current isolation is critical. Consider the 2 A current limit and thermal protection thresholds when designing load circuits that may experience transient overloads or short-circuit conditions.

Part Context

This device belongs to the LTC1477/LTC1478 family of protected high-side switches. While the LTC1477 provides a single channel in an 8-pin SOIC package, the LTC1478 variant offers dual channels in a 16-pin SOIC package. Both share similar protection architectures and are designed for low-power distribution tasks in portable and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided source material.