Description: 
  Input voltage 6.5~40V,output 3.3V/5V 
  Maximum output current 1A   
  DC-DC Step-Down Converter module working frequency 550KHz. efficiency is 76-90% . 
  Quiescent current: about 1.5MA   
  Overtemperature shutdown, input under-voltage protection, BS-voltage protection, and short circuit protection.   
  2.54mm pin pitch, Arduiuo UNO MEGA2560 Breadboard MCU Development Board friendly   
  Excluding Pin Size 18.3mm x 10.2mm x 6.7mm( small)   
  Weight : about 1.3g(Very light) 
  Attention : 
  This is a DC-DC voltage converter module,Must be noted when using: 
  1. Input voltage can not be greater than the maximum input range 
  2. Output power can not be greater than the maximum load for a long time 
  3. Input power must be greater than the output power, because the power consumption of the module itself 
  Applications: 
  3.3V MCU ARM CPU FPGA/CPLD 
  12V 5V TO 3.3V lithium battery-powered systems 
  3.3V Motor 
  WIFI esp8266 Module 
  CCTV camera 
  Wireless Module:Nrf24l01 CC1101 CC2500 CC2530 Zigbee 
  Smart home / home automation 
  Distributed Power Systems 
  Battery Charger 
  Pre-Regulator for Linear Regulators 
  replace AMS1117-3.3 LM1117-3.3 1117 LDO 
  Package Include: 
  1 x 1A DC 6.5-40V to 3.3V 5V DC-DC Step-Down Buck Converter for Arduino ESP8266 RF BMS Power Module Input 6.5-40V Output 3.3V 5V