L6747C

Overview

The L6747C is a half-bridge gate driver IC manufactured by STMicroelectronics, designed for driving N-channel MOSFETs. It features two synchronous drivers housed in an 8-VFDFPN (3x3) surface-mount package with an exposed pad. The device operates with a supply voltage range of 5V to 12V and supports a maximum high-side bootstrap voltage of 41V. It accepts non-inverting logic inputs with defined thresholds of 0.8V for VIL and 2V for VIH. The component delivers a peak output current of 3.5A and functions within a junction temperature range of 0°C to 125°C.

Feature Summary

• Provides dual synchronous half-bridge drive configuration for efficient power switching control
• Supports direct interface with standard logic levels through specified input voltage thresholds
• Engineered for robust operation in automotive-grade thermal environments up to 125°C

Applications

• Automotive powertrain and chassis systems requiring reliable gate driving
• Industrial motor control applications utilizing N-channel MOSFET topologies
• General-purpose DC-DC converter designs requiring half-bridge configurations

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific suffix variant matches design requirements, as packaging options include tape-and-reel and cut-tape formats. Check for end-of-life status updates, as this part may be discontinued. Ensure compliance with RoHS3 and REACH regulations relevant to the target market. Validate that the 8-VFDFPN footprint aligns with PCB layout specifications before procurement.

Selection Notes

Select the L6747C when a compact solution for driving N-channel MOSFETs in a half-bridge topology is required. Consider its 3.5A peak current capability for moderate-power switching applications. Evaluate the 5V to 12V supply range against available system voltages. The exposed pad design aids thermal dissipation, making it suitable for space-constrained automotive and industrial enclosures where heat management is critical alongside signal integrity.

Part Context

The L6747C belongs to STMicroelectronics' portfolio of power management integrated circuits, specifically within the gate driver category. It complements other pre-driver and full-bridge solutions offered by the manufacturer. This component addresses the need for isolated or floating high-side driving in compact packages, serving as a key interface between low-voltage control logic and high-voltage power stages in modern electronic systems.

Replacement Considerations

The ADP3650JCPZ-RL from Analog Devices Inc. is listed as a similar substitute part number. Verify pin compatibility, electrical parameters, and package dimensions before substitution. Cross-reference functional specifications to ensure equivalent performance in the target application.