LTC4558 - Dual SIM/Smart Card Power Supply and Interface

Internal level translators allow controllers operating with supplies as low as 1.4V to interface with 1.8V or 3V Smart Cards. Battery life is maximized by a low operating current of 65µA and a shutdown current of less than 1µA. Board area is minimized by the low profi le 3mm × 3mm × 0.75mm leadless QFN package.

  • Power Management and Control for Two SIM Cards or Smart Cards
  • Independent 1.8V/3V VCC Control for Both Cards
  • Supports Simultaneous Powering of Both Cards
  • Fast Channel Switching
  • Automatic Level Translation
  • Dynamic Pull-Ups Deliver Fast Signal Rise Times*
  • Built-In Fault Protection Circuitry
  • Automatic Activation/Deactivation Sequencing Circuitry
  • Low Operating/Shutdown Current
  • > 10kV ESD on SIM Card Pins
  • Meets EMV Fault Tolerance Requirements
  • Low Profi le 20-Lead (3mm × 3mm) QFN Package
Typical Application
LTC4558 Typical Application
LTC4558 Typical Application
  • GSM, TD-SCDMA and other 3G+ Cellular Phones
  • Wireless Point-of-Sale Terminals
  • Multiple SIM Card Interfaces
LTC4558 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC4558EUD#PBF3x3 QFN-20E$2.21$1.55
LTC4558EUD#TRPBF3x3 QFN-20E$1.61
Demo Boards
Part NumberDescriptionPrice
DC1263ALTC4558EDU | Dual SIM Smart Card Power Supply and InterfaceContact Factory
Reliability Data
Press Release
CAD Symbol
Related Products
LTC4558 - Dual SIM/Smart Card Power Supply and Interface
R527 Reliability Data
Dual SIM/Smart Card Power Supply IC Features Fast Channel Transition
LTC4558 Footprints and Symbols