LM5109MAX/NOPB

Overview

The LM5109MAX/NOPB is a high-voltage half-bridge gate driver manufactured by Texas Instruments. It features independent high-side and low-side drivers with a peak output current of 1 A. The device operates within a supply voltage range of 8 V to 14 V and supports TTL logic inputs. Key timing parameters include rise and fall times of 15 ns, maximum turn-on and turn-off delays of 2 ns, and a maximum propagation delay of 29 ns. It functions reliably across an operating temperature range from -40 °C to +125 °C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Provides independent high-side and low-side gate drive outputs for half-bridge configurations
• Capable of delivering 1 A peak source and sink current to drive power MOSFETs
• Supports direct interface with standard TTL logic input signals
• Operates over an extended industrial temperature range up to 125 °C

Applications

• High-voltage synchronous buck converter designs
• Half-bridge and full-bridge DC-DC converter topologies
• Motor control applications requiring isolated or floating gate drive
• Industrial power supply systems utilizing high-side switching

Procurement Notes

Verify the specific suffix 'MAX' indicates the SOIC-8 package variant when sourcing. Confirm RoHS compliance status as documentation may vary by revision. Ensure the NOPB designation aligns with lead-free manufacturing requirements for your assembly process. Cross-reference the manufacturer part number against official Texas Instruments databases to validate current production status and availability before finalizing procurement plans.

Selection Notes

Select this component when a robust half-bridge driver with 100 V capability and 1 A output strength is required. It is suitable for applications needing fast switching speeds with minimal propagation delay. Consider the SOIC-8 package constraints for PCB layout. Verify that the input logic levels match the system's TTL standards. Evaluate thermal management needs given the 125 °C maximum junction temperature rating.

Part Context

This device belongs to the LM5109 family of high-voltage gate drivers from Texas Instruments. It is designed to complement other power management ICs in complex power conversion systems. The MAX variant specifically denotes the plastic small-outline integrated circuit package. It serves as a critical interface between low-voltage control logic and high-voltage power switches.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference data. Users should consult official Texas Instruments documentation for potential cross-references or newer revisions within the LM5109 series.