Adjustable Step-down (CC CV) Power Module Input:7-35V, 1.25-30V Output

Applications:

• High-power LED constant current driver,lithium battery charger (including ferroelectric)
• 4V, 6V, 12V, 14V, 24V battery charger,Nickel cadmium,nickel metal hydride batteries charger,
• solar panels and wind turbines.

Features:

• Non-isolated step-down constant current, constant voltage module (CC CV) charging module
  
• Input voltage: 7-35V
  
• Output voltage: continuously adjustable (1.25-30V)
  
• Minimum Voltage difference: 2V
  
• Output current: rated 3A, the largest 4A (more than 15W, please install the heat sink)
  
• Constant current range :0-4A (adjustable)
  
• Size: ultra-small size 49 (L) * 23.4 (W) * 11.4 (H) mm (without potentiometer)
  
• Output power: natural cooling 15W, 25W with heatsink
  
• Conversion efficiency: up to 92% (output voltage higher, higher the efficiency)
  
• Output ripple: 20M bandwidth (for reference only)
  
• Input 12V Output 5V 3A 60mV (MAX)
  
• Operating temperature: Industrial grade (-40 ℃ to +85 ℃) 
• (ambient temperature exceeds 40 degrees, lower power use, or add one heatsink)
  
• Full load temperature rise: 45 °C
  
• No-load Current: Typical 10mA (12V switch to 4.2V)
  
• Load regulation: ± 1%
  
• Voltage regulation: ± 0.5%
  
• Dynamic response speed: 5% 200uS
  
• Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
  
• Indicator: Red LED constant current, the charge in light red, light blue, fully charged
  
• Output short circuit protection: Yes, constant current (constant current value of the current settings)
  
• Input reverse polarity protection: No, please comply with our plate or in the input reverse polarity protection diode in series.
  
• Connection mode: welded, plus pin can be directly soldered on the PCB to matching pin, radiator, shell.

For Battery charge use:

• 1) Make sure of the voltage and current of the battery you need to charge.
• 2) Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage
• 3) Use the multimeter in 10A current scale to measure output short-circuit current,and adjust the current potentiometer to make sure the output current to the expected charging current value.
• 4) Charge transfer lamp current default value is 0.1 times of the charging current(constant current value), For lamp current adjustment, please turn potentiometer adjustment;
• 5)Connected to the battery, try charging.
  (1,2,3,4 steps to connect the power module input and output load does not take batteries.)

For LED constant current driver usage:

• 1)Make sure operating current and Max operating Voltage of the LED you need to drive.
• 2)Adjust the constant voltage potentiometer to make sure the out put Voltage is up to LED Max operating Voltage.
• 3)Use the multimeter in 10A current scale to measure output short-circuit current,and adjust the current potentiometer to make sure the output current to the expected LED operating current.
• 4)Join LED,test.
  (1,2,3,4 steps to connect the power module input and output load does not take LED.)

Note: The item do not include the heatsink,  you need buy the heatsink seperately.