LTC4558EUD#PBF

Overview

The LTC4558EUD#PBF is a dual SIM/smart card power supply and interface IC from Analog Devices. It integrates power conversion and signal level translation for advanced cellular telephones interfacing with 1.8V or 3V subscriber identity modules. The device operates on a single supply voltage ranging from 1.4V to 5.5V. It features an operating supply current of 65µA and supports input voltages between 2.7V and 5.5V. Packaged in a 20-lead QFN (3mm x 3mm x 0.75mm) with an exposed pad, it functions within a temperature range of -40°C to 125°C.

Feature Summary

• Integrates power conversion and signal level translation for smart card interfaces
• Supports 1.8V and 3V subscriber identity module operations
• Operates on a single supply voltage from 1.4V to 5.5V

Applications

• Advanced cellular telephone SIM interfaces
• Smart card power supply systems
• Subscriber identity module (SIM) interface circuits

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and tape/reel configuration. Ensure the component matches the required thermal performance and electrical specifications for the target application environment before procurement.

Selection Notes

Select this component when designing interfaces for 1.8V or 3V SIM cards requiring integrated power management. Consider the 20-lead QFN package constraints and the wide input voltage range suitable for battery-powered mobile devices. Verify compatibility with system ground references and signal levels.

Part Context

This part belongs to the LTC4558 family of specialized power management ICs designed for mobile communication applications. It addresses the need for compact solutions in cellular handsets by combining power regulation with necessary logic level shifting for smart card connectivity.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided data.