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ADI LTC1556CGN#PBF product image
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ADI LTC1556CGN#PBFRoHS

Manufacturer
ADI
MPN
LTC1556CGN#PBF
LCSC Part #
C675938
Packaging
SSOP-20-150mil
Customer #
Key Attributes
SIM Power Supply and Level Translator
Datasheetpdf iconADI LTC1556CGN#PBF
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QtyUnit Price(Reference Only)Total Amount
1+$ 4.6104$ 4.61
10+$ 3.9456$ 39.46
55+$ 3.5508$ 195.29
110+$ 3.1513$ 346.64
495+$ 2.9662$ 1468.27
990+$ 2.8829$ 2854.07
Standard Packaging55/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Logic/Translators, Level Shifters
ManufacturerADI
PackagingSSOP-20-150mil
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging55
Sales UnitPiece

Introduction

AI Translation

The LTC1555/LTC156 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. A soft start feature limits inrush current at turn-on, mitigating start-up problems that may result when the input is supplied by another low power DC/DC converter. The LTC1556 also includes an auxiliary LDO regulator/ power switch that may be used to power the frequency synthesizer or other low power circuitry. Battery life is maximized by 60µA operating current and 1µA shutdown current. Board area is minimized by miniature 16- and 20-pin narrow SSOP packages and the need for only three small external capacitors.

Features

AI Translation
  • Step-Up/Step-Down Charge Pump Generates 5V
  • Input Voltage Range: 2.7V to 10V
  • Output Current: 10mA (VIN ≥ 2.7V), 20mA (ΔVIN ≥ 3V)
  • 3V to 5V Signal Level Translators

  • 10kV ESD on All SIM Contact Pins

  • Short-Circuit and Overtemperature Protected
  • Very Low Operating Current: 60µA
  • Very Low Shutdown Current: <1µA
  • Soft Start Limits Inrush Current at Turn-On
  • Programmable 3V or 5V Output Voltage
  • 650kHz Switching Frequency
  • Auxiliary 4.3V LDO/Power Switch (LTC1556 Only)
  • Available in a 16- and 20-Pin Narrow SSOP

Applications

AI Translation
  • GSM Cellular Telephone SIM Interface
  • Smart Card Readers