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| Partname: | LTC1555 |
| Description: | SIM Power Supply and Level Translator |
| Manufacturer: | Linear Technology |
| Datasheet: | PDF (255K).
Click here to download *) |
The LTC1555/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. Output voltage may be programmed to 3V, 5V or direct connection to the VIN pin. |
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Click here to download LTC1555 Datasheet*) |
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