L9639

Overview

The L9639 is a fully integrated motor driver IC designed for automotive applications. It features two half-bridge outputs capable of driving brushed DC motors with a continuous output current of 5A. The device operates within a supply voltage range of 8V to 17V and utilizes DMOS technology. It includes an open/switch interface for control signals and is housed in a PowerSO-20 package with exposed pad for thermal management. The component supports operation across a temperature range of -40°C to 125°C.

Feature Summary

• Fully integrated design combining control logic and power stages
• Dual half-bridge output configuration for brushed DC motor drive
• Robust protection against short circuits and over-temperature conditions

Applications

• Automotive window lift systems
• Seat adjustment actuators
• General purpose motor control in vehicle electronics

Procurement Notes

Verify the specific ordering suffix, such as PD013TR, to confirm packaging type and reel specifications. Confirm RoHS compliance status and check for any product change notifications that may affect pinout or electrical characteristics. Ensure the selected variant matches the required thermal performance for the intended application environment.

Selection Notes

Select this component when a compact solution for low-power brushed DC motor control is required. The integrated nature reduces external component count compared to discrete solutions. Consider the PowerSO-20 package for adequate heat dissipation without requiring additional heatsinks in standard automotive environments.

Part Context

The L9639 belongs to STMicroelectronics' portfolio of specialized interface and power management ICs for automotive systems. It complements other motor drivers and system basis chips by providing dedicated actuator control capabilities. The device addresses the need for reliable, space-efficient motor driving in modern vehicle architectures.

Replacement Considerations

Check for direct pin-to-pin replacements within the same family. Verify if updated variants offer improved thermal performance or additional diagnostic features while maintaining compatibility with existing board layouts.