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STEVAL-ISA094V1

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3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

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1 - 2$30.620%
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$30.63
Parameter NameParameter Value
Target ApplicationDC-DC Topologies
Core ProductL7981A
Input Voltage Min Volt4.5
Input Voltage Max Volt28.0
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
RoHs compliantEcopack2
GradeIndustrial
Package NameCARD

The STEVAL-ISA094V1 is a step-down switching power supply based on STMicroelectronics’ L7981 switching regulator in an HSOP8 package.


The L7981 features an embedded power MOSFET and is capable of delivering up to 3 A of current to the load, depending on the application conditions.


The input voltage can range from 4.5 V to 28 V, while the output voltage can be set from 0.6 V to VIN.


Requiring a minimum number of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.

Key features
  • 3 A DC output current
  • 4.5 V to 28 V input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency, programmable up to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • RoHS compliant