LM2577S LM2596S Boost Buck Voltage DC DC Step Up Down Power Converter Module

It is a 15W Adapter/Charging Module/Power Supply Module with Applications of DIY Power Adapter/Charger, industrial equipment; electronic equipment, Communications Equipment, Power Tools, Car Driving Recorder, Car GPS, Car audio, LCD TV; Advertising screen, Monitoring System, LED lights, Fan, intercom and monitor system, etc.

Features:
-Module Properties: non-isolated Buck-Boost constant current, constant voltage module (CC-CV) charging module
-High-power constant current LED driver.
-Battery charger (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charger, solar panels, wind generators.
-Solar Panel, Wind generator voltage regulator, Car Power Supply.
-Output Current: Rate 3A, Max 4A ( If more than 15W, please install the heat sink, this item do not include heatsink)
-Constant current range: 0~2A (adjustable)
-Revolving light current: constant current value * (1% -100%), Revolving light current value Linkage with the constant current value, such as the constant current value is 3A, Revolving light current is set to constant current of 0.1 times (0.1 * 3A = 0.3A) when adjusted to the constant current value when the 2A, then Revolving light current is 0.2A (0.1 * 2A = 0.2A). Default 0.1 times

Minimum voltage pressure:
2V

Operating Temperature:
Industrial (-40°c to 85°c) (if the ambient temperature exceeds 40 °c, please lower power use, or to enhance heat dissipation)
This Converter only can rise Voltage, it can not rise Power.
if use Solar as a power supply, please make sure the input power is 1.1 times than the output power.

Battery Charging method:
Make sure the recharge battery float voltage and charge current, input voltage of the module.
Adjust the constant voltage regulator, the output voltage of about 3V.
With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current reaches a predetermined charge current value;
Adjust Constant regulator allows Output voltage reaches the float voltage;
Connected to the battery, try charging.
(1,2,3,4 step input connect power, output do not connect the battery.)

LED constant current driver Usage:
Make sure LED current and the maximum operating voltage;
Adjust the constant voltage regulator, the output voltage of about 3V.
With a multimeter ( to 10A) Measuring output Short-circuit current, Also adjust the constant regulator allows Output current reaches a predetermined LED working current value;
Adjust Constant regulator allows Output voltage Reach LED maximum working voltage;
Connected to the LED, test.
(1,2,3,4 take steps input connect power, output do not connect LED.)

Note:
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
Indicator: constant current Indicator Red, Charging indicator Red, Full charge indicator Blue.
Output short circuit protection: Yes, constant current (constant current setting values)
Input Reverse Polarity Protection: None (Please Series diode at the input port.)
Connection: Welding, can be directly soldered to a PCB.