ATA6823C
H-bridge Motor Driver
DATASHEET Features
в—Џ PWM and direction-controlled driving of four externally-powered NMOS transistors
в—Џ A programmable dead time is included to avoid peak currents within the H-bridge
в—Џ Integrated charge pump to provide gate voltages for high-side drivers and to supply
the gate of the external battery reverse protection NMOS
в—Џ 5V/3.3V regulator and current limitation function
в—Џ Reset derived from 5V/3.3V regulator output voltage
в—Џ Sleep mode with supply current of typically < 45ВµA, wake-up by signal on pins EN2
or on LIN interface
в—Џ A programmable window watchdog
в—Џ Battery overvoltage protection and battery undervoltage management
в—Џ Overtemperature warning and protection (shutdown)
в—Џ LIN 2.1 compliant
в—Џ 3.3V/5V regulator with trimmed band gap
в—Џ QFN32 package 9209G-AUTO-02/15 1. Description
The AtmelВ® ATA6823C is designed for automotive body and powertrain applications. The IC is used to drive a continuous
current motor in a full H-bridge configuration. An external microcontroller controls the driving function of the IC by providing a
PWM signal and a direction signal and allows the use of the IC in a motor-control application. The PWM control is performed
by the low-side switch; the high-side switch is permanently on in the driving phase. The VMODE configuration pin can be set
to 5V or 3.3V mode (for regulator and interface high level). The window watchdog has a programmable time, programmable
by choosing a certain value of the external watchdog resistor RWD, internally trimmed to an accuracy of 10%. For …