ST Life.augmented


3.5 A step down switching regulator (Vin=8 to 55 V) based on L4973
  • active 活性

The STEVAL-ISA090V1 demonstration board provides a platform for evaluation of the L4973, a 3.5 A step-down monolithic power switching regulator operating in continuous mode.

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 R3, R4. The input and output capacitors are capable of sustaining the RMS current within the operating range.

pdf 下载
Data Brief

Key Features

  • Input voltage range: 8 V to 55 V
  • Output voltage: 5.1 V ± 3% (line, load and thermal)
  • Output ripple: 51 mV
  • Output current range: 1 mA to 3.5 A
  • Max output ripple current: 30%
  • Current limit: 4.5 A
  • Switching frequency: 150 kHz
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1266: 3.5 A step-down switching regulator based on the L4973
1.1 177 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-ISA090V1 gerber files
2.1 100 KB

Bill of Materials

描述 版本 大小
BOM for STEVAL-ISA090V1 board
1.0 11 KB

Schematic Pack

描述 版本 大小
Board schematics for STEVAL-ISA090V1 board
1.0 57 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA090V1ActiveL4973-51Distributor reported inventory date: 2016-02-09
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA40

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
Feedback Form
Customer Feedback