TPS92551TZ/NOPB

LED Driver IC Overview

The TPS92551TZ/NOPB is a high-efficiency, constant current Buck LED driver IC from Texas Instruments. It integrates a power switch and supports an input voltage range of 4.5 V to 60 V with an adjustable output current up to 450 mA. Operating at a fixed frequency of 800 kHz, it features analog and PWM dimming capabilities. The device is housed in a TO-PMOD-7 package and operates within a temperature range of -40 °C to +125 °C.

LED Driver IC Feature Summary

• Integrates a power MOSFET and control circuitry for compact design
• Supports both analog and pulse-width modulation (PWM) dimming methods
• Includes thermal shutdown protection for enhanced reliability

LED Driver IC Applications

• Automotive interior lighting systems
• Industrial LED illumination fixtures
• General-purpose constant current LED drivers

LED Driver IC Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS standards as per the manufacturer's datasheet. Confirm the package type matches the required PCB footprint. Ensure the application voltage does not exceed the maximum rating of 60 V. Check for humidity sensitivity classification requirements during storage and handling.

LED Driver IC Selection Notes

Select this component when a wide input voltage range up to 60 V is required for automotive or industrial applications. It is suitable for designs needing integrated power switching to reduce external component count. Consider the TO-PMOD-7 package for space-constrained layouts requiring surface-mount installation.

LED Driver IC Part Context

This part belongs to the TPS92551 series of LED drivers designed for high-efficiency constant current regulation. It serves as a solution for driving multiple LEDs in series from various supply voltages. The device simplifies design by combining the controller and power stage into a single module.

LED Driver IC Replacement Considerations

The TPS92550TZ/NOPB is a related variant within the same family but operates with a lower maximum input voltage of 36 V compared to the 60 V limit of the TPS92551. Verify that the system input voltage remains within the 36 V threshold before considering this substitute.