STEVAL-ISA091V1:2 A step-down switching power supply demonstration board based on the L7980 (QFN)

The STEVAL-ISA091V1 is step-down switching power supply based on STMicroelectronics’ L7980 switching regulator in a QFN package.

The L7980 features an embedded power MOSFET and is capable of delivering up to 2 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

  • 2 A DC output current
  • 4.5 V to 28 V input voltage
  • Output voltage: 3.3 V (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
Product Specifications
DescriptionVersionSize
DB1503: 2 A step-down switching power supply demonstration board based on the L7980 (QFN)1.198 KB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-ISA091V1 gerber files2.130 KB
Bill of Materials
DescriptionVersionSize
STEVAL-ISA091V1 BOM1.09 KB
Schematic Packs
DescriptionVersionSize
STEVAL-ISA091V1 schematics1.038 KB
License Agreement
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
Sample & Buy
Part NumberCore ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEVAL-ISA091V1L7980331NECEAR99ITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA091V1CARDIndustrialEcopack2
2 A step-down switching power supply demonstration board based on the L7980 (QFN) STEVAL-ISA091V1
2 A step-down switching power supply demonstration board based on the L7980 (QFN) STEVAL-ISA091V1
2 A step-down switching power supply demonstration board based on the L7980 (QFN) STEVAL-ISA091V1
2 A step-down switching power supply demonstration board based on the L7980 (QFN) STEVAL-ISA091V1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2