STEVAL-ISA046V2:2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09I with inhibit

This evaluation board, based on the ST1S09I family of synchronous step-down DC-DC converters, is optimized for powering all lowvoltage applications and, generally, replaces high current linear solutions when power dissipation may cause high heating of the application environment. It provides up to 2 A over an input voltage range of 2.7 V to 5.5 V.

A high 1.5 MHz switching frequency allows the use of tiny surface-mount components and in addition to the resistor divider to set the output voltage value, an inductor and two capacitors are required.

The ST1S09I features an inhibit function.

A low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR surface-mount ceramic capacitors.

The device is thermally protected and current limited to prevent damage due to accidental shortcircuit.

The ST1S09 family is available in the DFN6 3x3 package.

Key Features

  • ST1S09I in the DFN6 3x3 package
  • Short-circuit protection
  • Input voltage range: 2.7 V to 5.5 V
  • Max Iout : 2 A
  • Output voltage: 3.3 V
  • Inhibit function
  • High internal switching frequency: 1.5 MHz
Product Specifications
DescriptionVersionSize
DB0581: 2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit1.382 KB
Board Manufacturing Specifications
DescriptionVersionSize
PCB layout1.055 KB
Bill of Materials
DescriptionVersionSize
Bill of materials1.046 KB
Schematic Packs
DescriptionVersionSize
Board schematic1.034 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-ISA046V2ST1S09IPUR461NECEAR99ITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA046V2CARDIndustrialEcopack2
2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit STEVAL-ISA046V2
2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit STEVAL-ISA046V2
2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit STEVAL-ISA046V2
2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit STEVAL-ISA046V2
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2