L6234

Overview

The L6234 is a triple half-bridge driver designed for brushless DC (BLDC) motors, realized in BCDmultipower technology. It integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single chip. The device supports a supply voltage range of 7 V to 52 V and delivers a peak current of 5 A. Typical RDSon is 0.3 Ω at 25 °C. It features cross-conduction protection, thermal shutdown, and intrinsic fast free-wheeling diodes. Logic inputs are TTL, CMOS, and microprocessor compatible. Operating frequency reaches up to 150 kHz. Each channel has separate logic inputs and enable functions. A 10 V external reference is available. The package is 20-pin PowerSO20.

Feature Summary

• Triple half-bridge architecture utilizing BCDmultipower technology for optimized logic and power stage performance.
• Integrated cross-conduction protection and thermal shutdown mechanisms for enhanced reliability.
• TTL, CMOS, and microprocessor compatible logic inputs with individual channel control and enable functions.
• Intrinsic fast free-wheeling diodes and high peak current capability supported by robust DMOS structure.

Applications

• Brushless DC motor control
• Three-phase motor driving
• Industrial motion control systems

Procurement Notes

Verify component status as the L6234 may be discontinued or have limited availability. Confirm package type matches design requirements. Check for valid substitutes if active sourcing is required. Ensure compatibility with existing system voltage and current specifications before procurement.

Selection Notes

Select this component for applications requiring a robust triple half-bridge driver with integrated protection features. Consider the 7 V to 52 V supply range and 5 A peak current capability. Evaluate thermal management needs due to RMS current limitations based on package dissipation. Verify logic input compatibility with the controlling microcontroller.

Part Context

The L6234 belongs to the STSPIN L62 series of motor drivers. It is part of STMicroelectronics' portfolio of power management ICs focused on motor control applications. The device leverages mixed technology to combine high-performance power stages with precise logic control.

Replacement Considerations

L6234PD is listed as a substitute part number from STMicroelectronics.

FAQ

What technology is used to realize the L6234?

The L6234 is realized in BCDmultipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip.

Does the L6234 include protection features?

Yes, it includes cross-conduction protection and thermal shutdown capabilities.

What is the operating frequency range of the L6234?

The operating frequency can reach up to 150 kHz.