STEVAL-ISA093V1 3 A step-down switching power supply demonstration board based on the L7981 (QFN)

The STEVAL-ISA093V1 is a step-down switching power supply based on STMicroelectronics’ L7981 switching regulator in a QFN 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.

技术特性
  • 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
功能框图
STEVAL-ISA093V1 订购信息
订购型号 产品状态 美金价格 数量 封装 包装形式 温度范围 材料声明
STEVAL-ISA093V1 Active   1000        
DATA BRIEF
描述 版本 大小
STEVAL-ISA093V1 : DB1504: 3 A step-down switching power supply demonstration board based on the L7981 (QFN) 1 99KB
APPLICATION NOTES
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AN2787: Monolithic VR demonstration board for chipset and DDR2/3 supply for ultramobile PC (UMPC) applications 1 2594KB
AN2936: 10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications 1 303B
BILL OF MATERIALS
描述 版本 大小
Bill of materials 1.0.0 9KB
SCHEMATIC PACKS
描述 版本 大小
Board schematic 1.0.0 39KB
PCB LAYOUTS
描述 版本 大小
PCB layout 2.0.0 31KB