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RH-PMICL1AK1

RH-PMICL1AK1

STMicroelectronics
Current Limiting Regulator High-Side 20-CFlatPack
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Overview

The RH-PMICL1AK1 is a radiation-hardened high-side current limiting regulator designed for space and high-reliability aerospace power distribution. It operates across a wide input voltage range of 8.5V to 90V and features a floating ground design that allows it to manage much higher voltages when correctly biased. The device provides smart current limitation for repetitive overloads and configurable trip-off and recovery times.

Why Choose This Part

The component is specifically engineered for radiation environments, offering QML-V qualification and a wide operating temperature range from -55C to 125C. Its integrated I2C interface allows for digital monitoring, while the floating ground architecture provides unique flexibility in high-voltage system architectures.

Applications

Satellite Power Distribution
Protects downstream satellite subsystems from overcurrent conditions in harsh radiation environments.
High-Side Gate Driving
Utilizes the high-side sensing and 90V capability to manage power MOSFET gate control circuits.
Spacecraft Battery Management
Acts as a robust current limiter for battery charging and discharge protection in low-earth orbit and deep space missions.
Redundant Power Switching
Provides current-limited power switching for redundant payload electronics.

Key Specifications

Function Current Limiting
Mounting Type Surface Mount
Package / Case 20-CFlatPack
Sensing Method High-Side
Voltage - Input 8.5V ~ 90V
Operating Temperature -55degC ~ 125degC (TJ)
Supplier Device Package 20-CFlatPack

Getting Started

For initial evaluation, designers should consult the STMicroelectronics Rad-Hard power management documentation. Implementation requires careful selection of external resistors to set the current limit and trip-off timing parameters according to the desired protective profile.