ET9555M

Overview

The ET9555M is an overvoltage protection IC featuring a low on-resistance design and a BUS_DET output. It operates with an external switch within a voltage range of 2.5V to 28V. The device supports input voltages from 4V to 24V, with a typical operating voltage of 6.0V. Key electrical specifications include a maximum current of 12.1A, a breakdown voltage of 12.5V, and a leakage current of 150µA. It is housed in a CSP12 package with a 0.4mm pitch.

Feature Summary

• Integrates overvoltage protection with a dedicated BUS_DET status output for system monitoring.
• Utilizes an external switch configuration to manage high-current loads efficiently.
• Features low on-resistance architecture to minimize power loss during normal operation.

Applications

• Overvoltage and surge protection for electronic circuits
• Power management systems requiring bus detection capabilities
• Consumer electronics and automotive applications

Procurement Notes

Verify the specific suffix or variant against official Etek Microelectronics documentation to ensure compatibility with required voltage ranges and package types. Confirm that the external switch component aligns with the IC's current handling specifications. Cross-reference the datasheet for thermal performance requirements under maximum load conditions to ensure reliable operation in the target application environment.

Selection Notes

Select this component when a compact solution for overvoltage protection with integrated bus detection is required. The low on-resistance characteristic makes it suitable for applications prioritizing efficiency. Ensure the external switch selection matches the 12.1A current rating and that the input voltage range fits within the 4V to 24V operational limits defined by the manufacturer.

Part Context

The ET9555M belongs to Etek Microelectronics' portfolio of power protection devices. It is designed for modern electronic systems needing robust voltage regulation and fault detection. The company specializes in power management and signal chain solutions, positioning this IC as a key component for safeguarding sensitive circuitry against voltage spikes.

Replacement Considerations

The ET9650M1 is a documented alternative offering similar ultra-low on-resistance and flag output functionality. Verify pinout compatibility and electrical parameter alignment before substitution.