LMD18400N

Overview

The LMD18400N/NOPB is a quad high-side gate driver manufactured by Texas Instruments, housed in a 20-pin PDIP package. It operates within a supply voltage range of 7 V to 28 V and supports through-hole mounting. The device features four independent drivers with a maximum power dissipation of 5 W and an on-resistance of 800 mOhms. Operating temperatures span from -25°C to +85°C, with rise and fall times of 7 µs and 150 ns respectively.

Feature Summary

• Integrates four independent high-side drivers for multi-channel control applications
• Includes thermal shutdown protection to safeguard against overheating conditions
• Supports digital and I2C compatible logic interfaces for flexible system integration
• Provides fault reporting capabilities for enhanced system monitoring

Applications

• Industrial motor control systems requiring multiple high-side switching channels
• Automotive electronic modules utilizing high-side load driving
• General-purpose power management circuits needing isolated high-side drive signals

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific ordering suffixes such as NOPB for lead-free variants. Check current lifecycle status as the part may be discontinued or subject to last-time buy restrictions. Ensure packaging type matches project requirements for handling and assembly processes.

Selection Notes

Select this component when designing systems requiring four independent high-side switches within a single package. Verify that the 28 V maximum supply voltage aligns with the target application's power rails. Consider the 800 mOhm on-resistance for thermal management calculations. Ensure the PDIP-20 footprint fits the PCB layout constraints and that the operating temperature range meets environmental specifications.

Part Context

This device belongs to the LMD18400 series of gate drivers produced by Texas Instruments. It is categorized under half-bridge drivers and power management ICs. The component utilizes silicon technology and is designed for robust performance in industrial and automotive environments. It serves as a specialized solution for driving high-side loads where compact integration and fault protection are critical design factors.

Replacement Considerations

Consult official datasheets for pin-compatible alternatives within the same family. Verify electrical parameters such as supply voltage range and on-resistance before substitution. Ensure thermal characteristics and package dimensions match existing board layouts. Cross-reference feature sets to confirm equivalent fault protection and interface compatibility.