LM5100AM/NOPB

Overview

The LM5100AM/NOPB is a high-voltage half-bridge gate driver manufactured by Texas Instruments, originally developed under the National Semiconductor brand. It integrates independent high-side and low-side drivers capable of sourcing and sinking 2 A peak currents. The device operates with a supply voltage range of 9 V to 14 V and supports bootstrap operation for high-side driving up to 100 V. Key electrical parameters include a maximum propagation delay of 20 ns, rise time of 570 ns, and fall time of 430 ns. It functions within an operating temperature range of -40°C to +125°C and is available in an SOIC-8 surface-mount package.

Feature Summary

• Integrates independent high-side and low-side drivers for half-bridge configurations
• Provides 2 A peak source and sink output current capability
• Supports high-side switching with bootstrap operation up to 100 V bus voltage
• Features CMOS/TTL compatible logic inputs for direct microcontroller interfacing

Applications

• High-frequency DC-DC converters
• Synchronous rectification circuits
• Motor control systems

Procurement Notes

Verify that the ordering suffix /NOPB confirms lead-free and RoHS compliance as per Texas Instruments specifications. Confirm the package variant matches the required SOIC-8 footprint. Ensure the manufacturer designation aligns with current Texas Instruments production standards, as National Semiconductor assets were acquired. Cross-reference the specific revision level against the latest datasheet to guarantee functional equivalence.

Selection Notes

Select this component when a robust 2 A drive current is required for medium-power MOSFETs in half-bridge topologies. The wide operating temperature range makes it suitable for industrial environments. Consider the 20 ns propagation delay for timing-sensitive applications. Evaluate the SOIC-8 package for thermal performance and PCB space constraints relative to higher-current alternatives like the LM5101 series.

Part Context

This device belongs to the LM5100/LM5101 family of high-voltage gate drivers. It serves as a bridge between low-voltage control logic and high-voltage power switches. The /NOPB suffix indicates a non-pb (lead-free) version compliant with environmental directives. The part represents the transition from National Semiconductor's original design to Texas Instruments' manufacturing and support ecosystem.

Replacement Considerations

LM5100BSDX/NOPB offers identical electrical performance in a WSON-10 package. LM5101AM/NOPB provides increased 3 A drive current in an SOIC-8 package. LM5100A/B/C variants share similar functionality but may differ in specific electrical characteristics or packaging options.