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STEVAL-ISA202V1

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1.5 A step down switching regulator (VIN = 8 to 55 V) based on L4971

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1$28.790%
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$28.79
Parameter NameParameter Value
Core ProductL4971
Input Voltage Min Volt8.0
Input Voltage Max Volt55.0
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
RoHs compliantEcopack2
GradeIndustrial
Package NameCARD

The STEVAL-ISA202V1 product evaluation board provides a platform for evaluation of the L4971, a 1.5 A asynchronous step-down power switching regulator with zero load current operation capability.


Based on the selection of the external components, the device can operate in the entire input voltage range of 8 V < VIN < 55 V. The output voltage is limited by the voltage rating of the output capacitor, so it can be adjusted within the 3.3 V < VOUT < 30 V range through voltage divider R2, R3.


The input and output capacitors are capable of sustaining the RMS current within the operating range.

Key features
  • Input voltage range: 8 V to 55 V
  • Output voltage: 5.1 V ± 3% (line, load and thermal)
  • Output ripple: less than 51 mV
  • Output current range: up to 1.5 A
  • Max output ripple current: 30%
  • Current limit: 2.5 A typ.
  • Switching frequency: 200 kHz
  • RoHS compliant