Product Overview

RHFL4913SCA-07V from STMicroelectronics is a rad-hard adjustable positive voltage regulator designed for space and harsh radiation environments. Certified to Mil Std 883E Method 1019.6, it withstands up to 300 krad radiation and remains stable under ELDRS conditions. Housed in an SMD5C hermetic ceramic package, it delivers 3A output current with an adjustable 1.23V-9V output, integrated multiple protections, and is a core choice for high-reliability power management chips.

Key Features

• Superior radiation hardness: Tested in accordance with MIL-STD-883E Method 1019.6, it can withstand up to 300 krad under ELDRS conditions, suitable for space and other high-radiation environments.
• 3A high output current: Supports a maximum output current of 3A, meeting the power supply requirements of medium and high-power electronic devices, with excellent efficiency due to low dropout voltage.
• Comprehensive protection mechanisms: Integrates overtemperature protection (shuts down at ~175°C, recovers at ~135°C), overcurrent protection (adjustable, typically 1-4.5A), and output overload monitoring (OCM pin) to ensure system safety.
• Flexible voltage adjustment: Achieves an output voltage range of 1.23-9V via the ADJ pin, supporting remote sensing operation to ensure precise voltage at the load end.
• High-reliability package: Adopts an SMD5C hermetic ceramic package with a low thermal resistance of 8.3°C/W, allowing direct soldering to heat sinks, suitable for a wide temperature range of -55 to 150°C.

Technical Specifications

Typical Applications

• In space exploration equipment, RHFL4913SCA-07V provides stable power supply for satellite and spacecraft payload systems with its excellent radiation resistance, enduring long-term exposure to cosmic rays and radiation environments.
• For precision electronic devices in harsh industrial environments, such as sensor arrays under high temperature and strong electromagnetic interference, the regulator's wide temperature operating capability and comprehensive protection mechanisms ensure stable voltage output, reducing system failures.
• In FPGA power design, its low noise output (typical 40µVrms noise voltage from 10Hz to 100kHz) and fast response characteristics can effectively suppress power transients, ensuring stable operation of FPGA chips.
• In remote sensing systems, through remote sensing functionality, RHFL4913SCA-07V can compensate for line losses, ensuring precise voltage at remote loads and improving measurement or control accuracy.
• In military and avionics equipment, QML-V qualification and high-reliability design enable it to work reliably under harsh conditions such as vibration and shock, meeting the power supply needs of critical systems.

Why Choose RHFL4913SCA-07V?

• Industry-leading radiation resistance: 300 krad radiation hardness ensures stable operation in space and nuclear environments, far exceeding the tolerance of ordinary voltage regulators.
• Efficient thermal management: The SMD5C package's low thermal resistance (8.3°C/W) and metallized bottom design facilitate heat dissipation, suitable for high-power applications.
• Precise voltage regulation: Typical line regulation of 0.35% (25°C) and typical load regulation of 0.3% ensure high output accuracy.
• Flexible protection configuration: Adjustable overcurrent limit (1-4.5A) and OCM monitoring pin facilitate integration of system protection logic, enhancing safety.
• Comprehensive certification and reliability: QML-V qualification (DSCC SMD #5962F02524) and rigorous environmental testing ensure long-term stable operation.

SUNTOPS COMPANY INTRODUCTION

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