SPX29502T5-L/TR

## Product Overview

The MaxLinear SPX29502T5-L/TR is a high-performance, low-dropout linear voltage regulator designed for a wide range of communication, industrial, and embedded applications. It provides a regulated 5 V output with low output noise, fast transient response, and excellent load and line regulation. The device integrates protection features including overcurrent limiting, thermal shutdown, and reverse voltage protection, ensuring robust operation in demanding systems.

## Electrical Specifications

* Input Voltage Range (V_IN): 6 V to 20 V
* Output Voltage (V_OUT): 5 V fixed
* Output Current (I_OUT): Up to 2 A continuous
* Dropout Voltage: Typical 0.3 V at full load, maximum 0.5 V
* Output Voltage Tolerance: ±2% over line, load, and temperature variations
* Line Regulation: 0.01%/V typical
* Load Regulation: 0.1% typical
* Quiescent Current (I_Q): 2 mA typical
* Operating Temperature Range: -40°C to +125°C
* Output Noise: 40 µV RMS typical over 10 Hz to 100 kHz

## Functional Features

* Low Dropout Operation: Allows efficient regulation even when input voltage is close to output voltage
* Fast Transient Response: Minimizes output voltage deviation under dynamic load conditions
* Protection Features: Integrated current limiting, thermal shutdown, and safe operation during input voltage transients
* Reverse Voltage Protection: Prevents damage if input polarity is reversed
* External Capacitor Support: Stable with low ESR ceramic or tantalum output capacitors
* High Power Supply Rejection Ratio (PSRR): Reduces input voltage ripple impact on the output, improving noise-sensitive circuits

## Electrical Performance

* Output Ripple Voltage: Typically 10 mVp-p with recommended capacitors
* Efficiency: High efficiency for a linear regulator with minimal power dissipation under low input-output voltage differential
* Load Transient Performance: Rapid recovery to load step changes ensures minimal output voltage overshoot or undershoot
* Thermal Resistance: Junction-to-ambient θ_JA approximately 40°C/W in typical PCB layout conditions

## Packaging and Mechanical Features

* Package Type: TO-263 (D2PAK) surface-mount package, thermally enhanced
* Mounting Style: SMD with exposed pad for heat dissipation
* Pin Count: 3 pins
* Thermal Management: Exposed pad allows efficient heat conduction to PCB for high-current operation
* RoHS Compliant: Lead-free package suitable for industrial and commercial systems

## Applications

* Point-of-load regulation for communication and networking equipment
* Embedded microcontroller and FPGA power supplies
* Industrial automation and instrumentation
* Consumer electronics requiring low-noise 5 V supply
* Battery-powered systems requiring efficient voltage regulation with high current

## Summary

The MaxLinear SPX29502T5-L/TR is a robust, low-dropout 5 V linear regulator optimized for high-current and low-noise applications. Its fast transient response, low dropout voltage, and integrated protection features make it suitable for industrial, communication, and embedded systems. The TO-263 package with thermal pad ensures reliable heat dissipation for continuous operation at high loads, while its low output noise and tight regulation support sensitive electronics requiring stable voltage supply.