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LTC1555 Datasheet Sim Power Supply And Level Translator

Manufacturer: Linear Technology (now Analog Devices)

Overview: LTC1555/LTC1556 SIM Power Supply and Level Translator.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The LTC®1555/LTC1556 provide power conversion and level shifting needed for 3V GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs).

These parts contain a charge pump DC/DC converter that delivers a regulated 5V to the SIM card.

Input voltage may range from 2.7V to 10V, allowing direct connection to the battery.

Key Features

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