Automotive Power

TLE 8444SL – Quad Half-Bridge Driver IC for Bipolar Stepper and DC Motors

TLE 8444SL block diagram

TLE 8444SL is a protected quad half-bridge IC developed for automotive and industrial motion control applications. It is a monolithic die based on Infineon's smart mixed technology.

TLE 8444SL can be used to drive DC motors in forward (cw), reverse (ccw), brake and high-impedance modes. It also enables stepper motors to be driven in no-current, negative/positive output current modes. These modes can be easily set by connecting the device to a microcontroller via a standard parallel interface.

The PG-SSOP-24-7 package saves PCB board space and costs. Integrated short circuit and overtemperature protection as well as built-in diagnostic features such as over- and undervoltage lockout and open load detection improve system reliability and performance. 

PWM capability up to 10kHz Green product (RoHS-compliant) Low current consumption in sleep mode (max 5µA) Outputs protected against overcurrent Maximum path RDS(on) of 2.6 Ω at 150°C Minimum overcurrent shutdown of 0.9A Error flag diagnosis Over- and undervoltage lockout Overtemperature protection with hysteresis AEC-qualified Open load diagnosis in ON state for all outputs

0.5A continuous DC motor drives Idle speed control using bipolar stepper motors