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4 A step-down switching evaluation board based on the ST1S50

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Parameter NameParameter Value
Target ApplicationDC-DC Topologies
Core ProductST1S50
Input Voltage Min Volt4.0
Input Voltage Max Volt18.0
Packing TypeNot Applicable
RoHs compliantEcopack2
Package NameCARD

The STEVAL-ISA146V1 is a product evaluation board used to evaluate the ST1S50, a 500 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S50 operates from a 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to 0.88 x VIN.

Key features
  • 4 A output current
  • 4.0 V to 18 V input voltage
  • Output voltage adjustable from 0.8 V to 0.88 x VIN
  • 500 kHz switching frequency
  • High efficiency at light load
  • Programmable soft-start and enable
  • Integrated 95 mW and 69 mW power MOSFETs
  • All ceramic capacitor
  • Power Good
  • Cycle-by-cycle current limiting
  • Short-circuit protection
  • Hysteretical thermal shutdown
  • RoHS compliant