ATA6843 Overview
The Atmel® ATA6843 and Atmel ATA6844 are system basis chips for three-phase brushless DC motor controllers designed in Atmel’s state-of-the-art 0.8µm SOI technology SMART-I.S.™1. In bination with a microcontroller and six discrete power MOSFETs, the system basis chip forms a BLDC motor control unit for automotive applications. In addition, the circuits provide a 3.3V/5V linear regulator and a window watchdog.
ATA6843 Key Features
- Broad operation voltage range from 5.25V to 32V
- Atmel® ATA6843 temperature range TJ = 150°C
- Atmel ATA6844 extended temperature range TJ = 200°C
- Direct driving of six external NMOS transistors with a maximum switching
- Integrated charge pump to provide gate voltages for high-side drivers and to supply
- 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