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

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设计

技术文档

产品规格
Description Version Size
DB1503 DB1503: 2 A step-down switching power supply demonstration board based on the L7980 (QFN) 1.1 98 KB

硬件资源

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA091V1 gerber files 2.1 30 KB
Bill of Materials
Description Version Size
STEVAL-ISA091V1 BOM 1.0 9 KB
Schematic Packs
Description Version Size
STEVAL-ISA091V1 schematics 1.0 38 KB

法律

许可协议
Description Version Size
Evaluation products license agreement 1.0 125 KB
支持和社区

样片和购买

型号 Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA091V1 L7980 Active 33 1 NEC EAR99 ITALY MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA091V1 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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