12V Lead Acid (SLA) smart charger with integrated battery protection

• charger IC - CN3717
• step up DC/DC converter - XL6008 when 10V < Uin < 15V
  
• step down DC/DC converter - XL5009 when 25V < Uin > 15V
• Low Drop out DC-DC stabilized output with XL4015 - Uout = 11.5V /4.65A max
• smart control with 8-bit Attiny controler
• over voltage protection when Vbat >14.9V
  
• under voltage protection when Vbat < 12V
• charge with temperature compensation
• max charge current 0.9A

Made by Honeytech