System basis chip for three-phase brushless DC motor controllers designed in the Atmel 0.8-µm SOI technology SMART-I.S.™. The chip forms a BLDC motor control unit for automotive applications in combination with a microcontroller and six discrete power MOSFETs. Works in extended supply voltage range from 5.25V up to 32V.It features a Tjunction of up to 150°C. Its circuits provide a 3.3V/5V linear regulator and a window watchdog. It includes various control and protection functions like overvoltage and over-temperature protection, adjustable short circuit detection, undervoltage management and coast function. Its drivers fulfill maximum safety requirements and offer a high integration level to save cost and space.
Feature
- Broad operation voltage range from 5.25V to 32V
- ATA6843 temperature range TJ = 150°C
- Direct driving of six external NMOS transistors with a maximum switchingfrequency of 50kHz
- Integrated charge pump to provide gate voltages for high-side drivers and to supplythe gate of the external battery reverse protection NMOS
- Built-in 5V/3.3V voltage regulator with current limitation
- Reset signal for the microcontroller
- Sleep Mode with supply current of typically < 45μA
- Wake-up via LIN bus or high voltage input
- Programmable window watchdog
- Battery overvoltage protection and battery under voltage management
- Overtemperature warning and protection (shutdown)
- Jump start compatible
- LIN transceiver conformal to LIN 2.1 and SAEJ2602-2 with outstanding EMC andESD performance
- QFN48 package 7mm x 7mm
