L6226N

Overview

The L6226N is a DMOS dual full bridge driver designed for motor control applications, manufactured using multipower-BCD technology. It integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single chip. The device supports an operating supply voltage range of 8 V to 52 V and delivers a peak output current of 2.8 A, with a continuous DC current rating of 1.4 A. The typical on-resistance (R_DS(on)) is 0.73 Ω at a junction temperature of 25 °C. It operates at frequencies up to 100 kHz and features thermal shutdown, non-dissipative overcurrent detection, and undervoltage lockout.

Feature Summary

• Integrates high-side and low-side DMOS power transistors with integrated fast free-wheeling diodes.
• Includes programmable high-side overcurrent detection and protection with diagnostic output.
• Features cross-conduction protection and thermal shutdown for enhanced reliability.

Applications

• Brushed DC motor control
• Solenoid driving
• Valve control systems

Procurement Notes

Verify the specific suffix 'N' against the manufacturer's official datasheet to confirm package type and pinout configuration. Ensure compatibility with system voltage requirements ranging from 8 V to 52 V. Confirm that the 1.4 A continuous current rating meets load demands without exceeding thermal limits under expected operating conditions.

Selection Notes

Select this component for applications requiring a robust dual H-bridge solution with integrated protection features. Consider the 0.73 Ω R_DS(on) for efficiency calculations. Evaluate the need for external heat sinking given the SO24 or PowerSO36 packaging options available in the series. Ensure control logic levels are compatible with the parallel interface inputs.

Part Context

The L6226 belongs to STMicroelectronics' L62xx series of DMOS dual full bridge drivers. This family provides integrated control and power stages for motor applications. Variants such as L6226D, L6226Q, and L6226PD share similar electrical characteristics but differ in package types and pin configurations. The L6226N specifically denotes a variant within this established product line focused on general-purpose motor control.

Replacement Considerations

L6226D, L6226Q, L6226PD