DC DC Voltage Boost Buck Converter 4.8-30V Solar Charger Charging Controller Adjustable Step-Up/Down Automatic Power Module

NOTE : we have documents of most of products in our store If you need it , contact us :) 1. Descriptions: ZK-SJ4 is a DC adjustable constant voltage constant current step down/up power supply module.Adjustable stable output voltage and current.Set output current to meet the demand.It can be used as ordinary buck power supply module, charger and LED constant current driver.Simple and efficient, practical.Support solar charging. 2. Features: 1>.High voltage resistant terminal. 2>.Support solar charging. 3>.Support undervoltage protection. 4>.Support short circuit protection. 5>.Support automatic buck/boost voltage. 6>.Support solar charging. 7>.Support anti-backflow Protection 8>.Support charging function. 9>.Support working status indicator. 10>.High current, low heat. 3.Parameters: 1>.Product Name:ZK-SJ4 4A Step Down/Up Power Supply Module 2>.Product Number:ZK-SJ4 3>.Working Voltage:DC 4.8V-30V 4>.Output Voltage:DC 0.5V-30V 5>.Output Current:4A(4A need heat sink;3A is stable for long time) 6>.Output Power:60W(60W need heat sink;35W is for 3A) 7>.Conversion efficiency:About 94% 8>.Working current:30mA 9>.Undervoltage Protection:Yes(Self-recovery) 10>.Anti-backflow Protection:Yes 11>.Short Protection:Yes 12>.Work frequency:180KHz 13>.Working Temperature range:-20?~85? 14>.Working Humidity range:0%-95%RH 15>.Size:68*37*22mm 16>.Heat sink size:48*16*10mm 4.Potentiometer/LED introduction: 1>.CV Potentiometer:Adjust output voltage.Increase the output voltage when rotating clockwise. 2>.CC Potentiometer:Adjust output current.Increase the output current when rotating clockwise. 3>.CC LED:Red LED.Constant current output indicator.It enters the constant current state when the load current reaches