STEVAL-ISA045V2 Active

2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09
Core ProductST1S09PUR
Target ApplicationDC-DC Topologies
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameCARD
Key Features
  • ST1S09 in the DFN6 3x3 package
  • Input voltage range: 2.7 V to 5.5 V
  • Max Iout: 2 A
  • Output voltage: 3.3 V
  • Short-circuit protection
  • High internal switching frequency: 1.5 MHz

This evaluation board, based on the ST1S09 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.


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.

In stock:
$43.35
Range Unit Price Savings
1 - 500$43.350%
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