Features

• Wide-range supply voltage: 8.5 - 90 V DC (Qualified in radiation at VCC from 8.5

V to 52 V)

• Very low DC current: typ. 1.5 mA

• External current limitation setting

• 3 types of operation

– Re-triggerable

– Latched

– Foldback

• Configurable trip-off and recovery times

• Smart current limitation for repetitive overload

• Embedded current sense

• Configurable undervoltage protection

• Floating ground

• Flat-20 hermetic package

• Radiation hardened

– TID : 100 krad (Si) HDR, LDR

– SEL and SEU free up to 78 MeV.cm²/mg

– SET report available upon request

• QML-V qualified SMD 5962-17211

• Evaluation boards available

Description

The RHRPMICL1A is an integrated current limiter designed to work with an external

P-channel power MOSFET.

It can be used as a universal solution to protect a power supply (from 8.5 V) from

anomalous external current demand (for example, in case the load enters latch-up

conditions).

It can protect or replace conventional fuses and can also be used to control

redundant loads.

The RHRPMICL1A features 3 user-configurable operating modes (re-triggerable,

latched, foldback), with different behaviors in case of overload/short-circuit events.

All key parameters of the application, including the current limit, the trip-off and

recovery times and the undervoltage protection are user configurable, making the

RHRPMICL1A suitable for a wide range of applications.

Telemetry pins (STS and TM) and telecommand pins (TC_ON and TC_OFF) allow

the device respectively to be monitored and controlled and the power on the load to

be managed properly.

The RHRPMICL1A is designed in ST's proprietary BCD6s-SOI technology to provide

total dose and heavy ion radiation hardness. Housed in a hermetic Flat-20 package

assembled in ST's QML-V certified facility, it is ideally suited for harsh environments.