ATA6844 Datasheet | Atmel

ATA6843/ATA6844 BLDC Motor Driver and LIN System Basis Chip DATASHEET 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 frequency of 50kHz - Integrated charge pump to provide gate voltages for high-side drivers and to supply the 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 undervoltage management - Overtemperature warning and protection (shutdown) - Jump start patible - LIN transceiver conformal to LIN 2.1 and SAEJ2602-2 with outstanding EMC and ESD performance - QFN48 package 7mm  7mm 9189K-AUTO-02/15 1. Description 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. The circuit includes various control and protection functions like overvoltage and overtemperature protection, short circuit detection, and undervoltage management. Thanks to these function blocks, the driver fulfils a maximum of safety requirements and offers a high integration level to save cost and space in various applications. The target applications are most suitable for the...