描述 Description

The RST1S31HF is an internally compensated 2.3 MHz fixed frequency PWM synchronous step-down regulator. The RST1S31HF operates from 2.8 V to 4 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.
The RST1S31HF device integrates a 70 mΩ high-side switch and a 55 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation deliver a very compact solution with a minimum component count.
The large ambient temperature range makes it ideal for aerospace and defense applications.
The RST1S31HF is available in a 3 mm x 3 mm, 8-lead VFDFPN package.

特性 Features

General features3 A DC output current
2.8 V to 4 V input voltage
Large ambient temperature range: -40 °C to 125 °C
Output voltage adjustable from 0.8 V
2.3 MHz switching frequency
Internal soft-start and enable
Integrated 70 mΩ and 55 mΩ power MOSFETs
All ceramic capacitor
Power Good (POR)
Cycle-by-cycle current limiting
Current foldback short-circuit protection
VFDFPN 3 x 3 - 8L package

Aerospace and defense featuresIntended for use in aerospace and defense applications
Dedicated traceability and part marking
Production parts approval documents available
Adapted extended life time and obsolescence management
Extended product change notification process
Designed and manufactured to meet sub-ppm quality goals
Advanced mold and frame designs for superior resilience to harsh environment (acceleration, EMI, thermal, humidity)
Extended screening capability on request