STEVAL-ISA101V1:2 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
Product Specifications
DescriptionVersionSize
DB1663: 2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D1.0228 KB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-ISA101V1 gerber files1.047 KB
Bill of Materials
DescriptionVersionSize
STEVAL-ISA101V1 BOM1.073 KB
Schematic Packs
DescriptionVersionSize
STEVAL-ISA101V1 schematics1.028 KB
License Agreement
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
Sample & Buy
Part NumberCore ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEVAL-ISA101V1L5973D40.431NECEAR99ITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA101V1CARDIndustrialEcopack2
2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D STEVAL-ISA101V1
2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D STEVAL-ISA101V1
2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D STEVAL-ISA101V1
2 A DC step-down switching regulator with 4 V/36 V input voltage range based on the L5973D STEVAL-ISA101V1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2