Versatile Power Management and Smart Card Interface IC

The 73S8009C is a versatile power management and single smart card interface circuit that is ideally suited for smart card reader products that are battery- and/or USB bus-powered. In addition to its EMV 4.1 and ISO 7816-3-compliant smart card-to-host interface circuitry, it provides control, conversion, and regulation of power for a companion host processor circuit and power for the smart card. The 73S8009C can operate from a single 2.7V to 6.5V source supply, or a combination of battery power (4.0V to 6.5V) and USB power (4.4V to 5.5V).

Applications

* Audio/Video: Conditional Access and Pay-per-View Slots in STB, Integrated DTV, PVR, DVD Recorders * Portable Devices: USB Bus-Powered, Battery-Powered, and Combo Devices; PINpads, PDAs, Handset Phones * POS Terminals

* Compliant with Key Standards: ISO 7816, EMV 4.1

* Transparent Interface

* Host Processor Drives/Reads Each Smart Card Signal Image Directly

* Automated Card Emergency Detection

* Requires Two Distinct Power Supplies

* +3.3V (2.7V to approximately 3.6V)

* +5.0V (4.75V/4.85V(2) to approximately 6.0V)

* VCC card and VDD Generation

* Selectable Smart Card Voltage: 1.8V, 3V, or 5V

* VCC Card Regulator

* VDD Regulator (+3.3V)

* Power Supply and Power Management

* USB Bus Power

* VBUS Supply Input (+4.4V to +5.5V Range)

* Priority over VBAT (Automatic Switch to DC-DC Converter Input)

* Always On When VBUS is Present

* Battery Power

* VBAT Secondary Supply Input (+4.0V to +6.5V Range)

* Automatic Switch (Instead of VBUS) When USB Bus Power is Disconnected

* Alternate Battery Power

* VPC (+2.7V to +6.5V Range) Can Be Used Either Through a Diode or Directly When VBUS and VBAT are Not Used

* Priority Over VBAT (Automatic Switch to DC-DC Converter Input)

* ON/OFF Switch

* Input for SPST Momentary Switch to Ground

* Can Be Replaced by a Digital Output (Controlled from Host Processor)