L9380

Overview

The L9380 is a dual H-bridge motor driver designed for automotive applications, featuring integrated current sensing and protection. It supports continuous currents up to 12 A per bridge with peak capabilities of 25 A. The device operates within a supply voltage range of 4.5 V to 27 V, compatible with standard 12 V and 24 V automotive electrical systems. Key features include overcurrent protection, thermal shutdown, and under-voltage lockout. It utilizes a 36-pin QFN package (5x5 mm) for compact board integration. The controller accepts PWM inputs for speed and direction control, making it suitable for various DC motor management tasks in vehicle environments.

Feature Summary

• Dual H-bridge architecture enabling independent control of two DC motors or one stepper motor
• Integrated current sensing outputs for precise feedback and closed-loop control applications
• Comprehensive protection mechanisms including overcurrent, thermal shutdown, and reverse polarity handling

Applications

• Automotive power window actuators
• Seat adjustment motor control systems
• Electric wiper motor drivers

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. Ensure the component meets AEC-Q100 automotive qualification standards required for your target application. Cross-reference the datasheet revision date to confirm compatibility with your design specifications. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when dual-channel DC motor control is required in space-constrained automotive designs. Consider the 12 A continuous current rating against your peak load requirements. Evaluate the need for integrated current sensing versus external shunt resistors. Verify that the operating voltage range aligns with your system's nominal and transient voltage levels.

Part Context

The L9380 belongs to STMicroelectronics' automotive motor driver portfolio, specifically targeting high-current DC motor applications. It complements single-channel drivers like the L9344 by providing dual-bridge capability in a compact form factor. This series is engineered for reliability in harsh automotive environments, adhering to strict electromagnetic interference and thermal performance standards defined for vehicle electronics.

Replacement Considerations

The L9380DTR is a direct pin-compatible alternative offering identical functionality with potential differences in tape-and-reel packaging configuration. Verify package marking and internal die specifications before substitution to ensure mechanical and electrical compatibility.