Contact Mouser (USA)  (800) 346-6873     |     Feedback        
View Cart     |     Change Location  USD
United States United States

Please confirm your currency selection:

US Dollars
Home » NEWEST Products » New by Manufacturer » STMicroelectronics » ST1S31 Step-Down Switching Regulator - STM
NEWEST Products
STMicroelectronics ST1S31 Step-Down Switching Regulator

STMicroelectronics ST1S31
Step-Down Switching Regulator

STMicroelectronics ST1S31 Step-Down Switching Regulator is an internally compensated 1.5MHz fixed-frequency PWM synchronous step-down regulator. The ST1S31 operates from 2.8V to 5.5V input, while it regulates an output voltage as low as 0.8V and up to VIN. This device integrates a 60mΩ high-side switch and 45mΩ synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S31 is available in 3mm x 3mm, 8 lead VFDFPN and SO-8 packages.

Features
  • 3A DC output current
  • 2.8V to 5.5V input voltage
  • Output voltage adjustable from 0.8V
  • 1.5MHz switching frequency
  • Internal soft-start and enable
  • Integrated 60mΩ and 45mΩ Power MOSFETs
  • All ceramic capacitor
  • Power Good (POR)
  • Cycle-by-cycle current limiting

  • Current foldback short-circuit protection
  • VFDFPN3x3-8L, SO8 packages

Applications
  • μP/ASIC/DSP/FPGA core and I/O supplies
  • Point of load for: STB, TVs, DVDs
  • Optical storage, hard disk drive, printers, audio/graphic cards

Application Circuit
Application Circuit
  • STMicroelectronics