ST1S41PHR Active

4 A step-down switching regulator
Input Voltage Min Volt4.0
Input Voltage Max Volt18.0
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
Package NamePowerSO-8
Key Features
  • 4 A output current
  • 4.0 V to 18 V input voltage
  • Output voltage adjustable from 0.8 V
  • 850 kHz switching frequency
  • Internal soft-start
  • Integrated 95 mΩ and 69 mΩ power MOSFETs
  • All ceramic capacitor
  • Enable
  • Cycle-by-cycle current limiting
  • Current foldback short-circuit protection
  • VFQFPN 4x4-8L and HSOP-8 packages

The ST1S41 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

The ST1S41 integrates 95 mΩ high-side switch and 69 mΩ 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 ST1S41 is available in VFQFPN 4 mm x 4 mm 8-lead package and HSOP-8.

In stock:
Range Unit Price Savings
1 - 9$1.580%
10 - 99$1.3415%
100 - 499$0.9440%
Contact Sales