ATA5275 ATMEL Corporation, ATA5275 Datasheet

ATA5275

Manufacturer Part Number

ATA5275

Description

Integrated 1.5 A peak current BCDMOS antenna driver IC dedicated as a 125 kHz wake-up channel transmitter for TPM applications

Manufacturer

ATMEL Corporation

Datasheet

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Features

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Applications

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Benefits

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Electrostatic sensitive device.

Observe precautions for handling.

Description

The ATA5275 is an integrated 1.5 A peak current BCDMOS antenna driver IC dedi-

cated as a 125 kHz wake-up channel transmitter for TPM applications.

It includes the full functionality to generate a magnetic LF field in conjunction with an

antenna coil to transmit data and power to a receiver. The transmission can be con-

trolled via a one wire I/O-interface by an external unit.

The smart power IC is delivered in a QFN20 power package with heat slug.

Antenna Driver Stage with Adjustable Antenna Peak Current for up to 1.5 A

Frequency Tuning Range from 100 kHz to 150 kHz

Automatic Antenna Peak Current Regulation

Self-tuning Oscillator for Antenna Resonant Frequency Adaption

Capable of Driving a High-Q Antenna

Integrated 5 V Regulator for External Load up to 10 mA

Bi-directional Single Wire Interface for Microcontroller or ECU

LF Baud Rates up to 4 kbaud and Amplitude Shift Keying (ASK) Modulation

Low Power Standby Mode < 50 µA

Antenna Driver Diagnosis: Peak Current, Antenna Frequency and Battery Voltage

Monitoring

Power Supply Range 8 V to 24 V Direct Battery Input

Load Dump Protection up to 45 V for 12 V Boards

Operation at Temperature -40°C to +105°C

EMI and ESD According to Automotive Requirements

Highly Integrated, Fewer External Components Required

Driver Overcurrent Protection

Overtemperature Protection

Tire Pressure Measurement (TPM)

Self Tuning Capability to Antenna Resonance Frequency

Adjustable Antenna Peak Current Value

Highest Integration Level for Embedded Automotive Systems

125 kHz

Transmitter IC

for TPM

ATA5275

Preliminary

Rev. 4739B–AUTO–10/04

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