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

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.

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

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设计

技术文档

产品规格
Description Version Size
DB1663 DB1663: 2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D 1.0 228 KB

硬件资源

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA101V1 gerber files 1.0 47 KB
Bill of Materials
Description Version Size
STEVAL-ISA101V1 BOM 1.0 73 KB
Schematic Packs
Description Version Size
STEVAL-ISA101V1 schematics 1.0 28 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-ISA101V1 L5973D Active 40.43 1 NEC EAR99 ITALY MORE INFO 直接购买 Add to cart 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-ISA101V1 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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