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0104110000000705
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This is a step-down DC-DC module that helps you in lowering the voltage to very good efficiency.
See description for more details about the product.
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This DC-DC step down module is a low-voltage switching power supply which makes the energy losses very small. It is step-down so the output voltage is less than the input voltage. While operating in sync mode, the output voltage can be achieved as low as 1 V with very good efficiency up to 96%.
Having very small dimensions and supporting a current up to 1.8 A continuously, it can be easily included in a wide range of projects.
exeptional
foarte bun, super exceptional.
perfect pentru incarcator USB 12V
L-am folosit pentru un incarcator alimentat la 12V, cu 2 iesiri USB. Foarte multumit. 5 lei + cateva fire si un conector USB cu 2 porturi: un incarcator USB excelent si ieftin pentru orice smartphone.
Informatii gresite
Am cumparat azi, 2 bucati. Produsul este diferit (cip si descriere).
Chipset: CXW8509
Input voltage: 4.75V-23V
Output voltage: 1V-17V
Output current: peak 2A, continuous 1.5A
Power : 10W
Efficiency: up to 95% (@ Vin=5V, Vout=3.3V, Iout=300mA)
Switching frequency: 340KHz
Output ripple: 30mV (no load)
Supply current: 1.5mA (no load)
Working temperature: -40℃ ~ +85℃
Module Size: 17*11*4mm
http://www.arm32.cl/fuentes-de-poder/165-regulador-de-voltaje-mini-cxw8509-step-down.html
mic si puternic
https://cdn-shop.adafruit.com/datasheets/MP2307_r1.9.pdf
https://github.com/tardate/LittleArduinoProjects/tree/master/Electronics101/BuckConverterModules
eu am cumparat 3bucati, singura problema e chinuiala la reglaj (daca se pune un potentiometru multitura este perfect)
Slab
Desi chip-ul ar trebui sa suporte 3 A pe iesire la peste 1A placa se incalzeste foarte mult , randamentul e in zona 80-85%. La 2A dupa un minut intra in protectie termica. Problema e doar cu incalzirea , nu apare limitare in curent nici la 3A , e posibil sa mearga daca lipiti placa pe un radiator. Aveti grija cu semireglabilul , se rupe foarte usor.
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