NCN4557 Overview
NCN4557 1.8 V/3.0 V Dual SIM/SAM/ Smart Card Power Supply and Level Shifter The NCN4557 is a dual interface analog circuit designed to translate the voltages between SIM, SAM or Smart Cards and a microcontroller (or similar control device). It integrates two LDOs for power conversion and three level shifters per channel allowing the management of two independent chip cards. The device fulfills the ISO7816 and EMV...
NCN4557 Key Features
- Supports 1.8 V or 3.0 V Operating SIM/SAM/Smart Cards
- The LDOs are able to Supply more than 50 mA Under 1.8 V and
- Built-in Active and Passive Pullup Resistor for I/O and
- All Pins are Fully ESD Protected According to ISO-7816
- ESD Protection on Card Pins in Excess of 8.0 kV (JEDEC HBM)
- Built-in Sequencer for Activation and Deactivation
- Supports up to more than 5.0 MHz Clock
- Very pact Low-Profile 3x3 QFN-16 Package
- These are Pb-Free Devices
NCN4557 Applications
- SIM Card Interface Circuit for 2G, 2.5G and 3G Mobile Phones