آی سی TPIC84000T

TPIC84134-Q1 www.ti.com LOW-FREQUENCY ANTENNA DRIVER FOR PASSIVE START AND PASSIVE ENTRY Check for Samples: TPIC84134-Q1 SLDS176 – AUGUST 2010 FEATURES 1 • Output Stage Consists of Eight Programmable Half-Bridge MOSFET Drivers (Configurable in Half, Full, or Parallel Bridges) Which Deliver Modulated Current to Each Coil • Linear Mode Output: Generates a Sine Wave Voltage That is Controlled by the Microcontroller • Output Stage is Overload Protected for Short and Over Temperature • Driver Control and Diagnosis Blocks Drive the Gates of the MOSFETS Via Data From the SPI • Antenna Diagnostics: Short to GND, Short to VBAT, And Open Load Via Current Measurement • Divider Block Generates an Internal Frequency From the Input Clock (Main Controller); Used for the Internal Logic • Sophisticated Failure Detection and Handling • HTSSOP (PWP) 28-Pin Package • Operating Temperature Range: -40°C to +105°C APPLICATIONS • Automotive Passive Start and Passive Entry Applications DESCRIPTION The low-frequency (LF) antenna driver is dedicated to automotive applications requiring passive entry or passive start operational control. It allows for up to eight dedicated drivers, consisting of MOSFET transistors. The device also incorporates sophisticated diagnosis, protection and monitoring features. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears .