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2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D
  • active 活性

The STEVAL-ISA101V1 demonstration board is based on the L5973D, a step-down monolithic switching regulator with 2 A DC (2.5 A switch peak current) current capability over the output voltage range (1.235 V to 36 V).

The operating input voltage ranges from 4 V to 36 V. The device is based on BCD5 technology. The embedded power element is a P-channel D-MOS transistor so the driving stage does not require any bootstrap capacitor and the duty cycle can range up to 100%.

An internal oscillator fixes the switching frequency at 250 kHz. A synchronization pin is available when a higher switching frequency (up to 700 kHz) is required.

Pulse-by-pulse current protection and a frequency foldback feature always guarantee an effective short-circuit protection. Other features include voltage feed-forward, protection against feedback disconnection, inhibit and thermal shutdown.

Previous sales code: EVAL5973D.

pdf 下载
Data Brief

Key Features

  • Vin: 4 V to 36 V
  • Vout: 1.235 V to 36 V
  • Output current: 2 A DC
  • Internal oscillator switching frequency: 250 kHz
  • Short-circuit protection
  • Inhibit and thermal shutdown
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1663: 2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D
1.0 229 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-ISA101V1 gerber files
1.0 48 KB

Bill of Materials

描述 版本 大小
1.0 74 KB

Schematic Pack

描述 版本 大小
STEVAL-ISA101V1 schematics
1.0 29 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA101V1ActiveL5973DBuy Direct40.42Distributor reported inventory date: 2015-08-29
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10

(*) 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。
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