L9856-TR-LF

Overview

The L9856-TR-LF is a high-side driver manufactured using BCD "OFF-LINE" technology, designed to drive N-Channel Power MOS transistors. It supports a floating upper section for voltage rails up to 160V. The device features CMOS/TTL compatible logic inputs with Schmitt trigger hysteresis. Key electrical parameters include a driver current capability of 500mA source and 500mA sink, dV/dt immunity of ±50V/nsec across the full temperature range, and switching times of 100ns rise/fall with a 2.5nF load.

Feature Summary

• Enables operation with high voltage rails up to 160V via floating upper section
• Provides robust dV/dt immunity of ±50V/nsec across the full temperature range
• Integrates inverting input functionality with CMOS/TTL Schmitt trigger compatibility
• Includes dedicated loading circuit for external bootstrap capacitor management

Applications

• Driving N-Channel Power MOS transistors in high-voltage environments
• Automotive systems requiring high-side switching capabilities
• Industrial control applications interfacing with controlling devices

Procurement Notes

Verify the specific suffix -TR-LF against the manufacturer's official documentation to confirm tape-and-reel packaging and lead-free compliance status. Ensure the component matches the active product status indicated in current datasheets. Cross-reference the ordering code with the latest STMicroelectronics release notes to avoid obsolete variants or discontinued packages.

Selection Notes

Select this component when driving N-Channel MOSFETs requires handling voltage rails up to 160V. The CMOS/TTL compatible inputs facilitate direct interfacing with standard logic controllers. Consider the 500mA source/sink current capability and 100ns switching speed for appropriate load requirements. Verify that the SO-8 package fits the available PCB space and thermal constraints.

Part Context

The L9856 belongs to a family of high-voltage high-side drivers utilizing BCD technology. This technology integrates power and logic functions on a single chip, enhancing reliability and reducing external component count. The device is engineered for robust performance in electrically noisy environments, featuring built-in reset circuitry and under-voltage lockout mechanisms.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference data. Consult official STMicroelectronics documentation for potential cross-references or updated series replacements.