LM2596S: Product Parameters: Product model: LM2596S DC-DC Buck module; The input voltage: 4.5V-28V; The output voltage: 0.8V-20V; The output current: 3A(MAX); Conersion efficiency: 96%; Switching frequency: 1.5MHz; Working temperature: -45~+85; Size: 44mm*21mm*14mm; Weight: 3g. Input voltage range: DC 3V to 40V (input voltage must be more than 1.5V above the output voltage is high. Can not boost). Input + --- IN +. Enter negative --- IN-. Output Voltage Range: Output + --- OUT. Output negative --- OUT. 1.5 to 35V DC voltage is continuously adjustable, the maximum output current of 3A. Product Description: Advantages: All use of imported SMD aluminum electrolytic capacitors, high-power high-Q inductors. Additionally, each a plate have been strictly technical tests, all testing has been completed using a separate anti-static protection bags package. Specially designed two screw holes. Four input and output pads are provided with a pin fixing hole spacing 100mil are integer multiples, convenient volume applications in the product; Note: working long hours is recommended for use in less than 2.5A of current, and coupled with the heat sink (10W output above); Since the step-down module, in order to ensure stable output, keep a minimum 1.5V differential. Voltage Regulator: Access to power (3-40V), adjust the blue potentiometer knob (clockwise rotation generally boost, buck counterclockwise rotation) and with a multimeter to monitor the output voltage reaches the required voltage. Wiring: 1. welding, welded directly to the power line input (output) port; 2. solder pins, or pins can be inserted through the lead insertion use in tunnel plate; soldered directly to the PCB after another or add pins. LM2596S-ADJ: Product Description this is a high performance DC to DC step-down adjustable power supply module, switching regulator. Mode: LM2596S-ADJ Input voltage: 3.2-40V Output Voltage: 1.5-35V (adjustable), input must least high 1.5V than output Output current: rated current 2A, maximum 3A (need to add heat sink), if the output power greater than 15W, combined heat sink is proposed. Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency) his is a high performance DC to DC step-down adjustable power supply module, switching regulator. Minimum drop-down voltage: 1.5V Voltage regulation: 0.5% Dynamic response speed: 5% 200uS circuit protection: SS36 Operating temperature: Industrial grade (-40 to + 85)(output power 10W or less) Load requlation: 0.5% Size: 43*21*14mm LM2596: Type: DC/DC Constant Current / Constant Voltage Size: (L*W*H)4.80*2.40*1.4cm/1.89"*0.94"*0.55" Input Voltage: 5V-57V input voltage must be higher 2V than the output voltage Output Current: rated current 2.5A/ 3A MAX ( Heat-sink Needed) Output Voltage: 1.25-30V (Adjustable) Output Power: 15w max at maximum voltage Output short circuit protection: Yes, constant current (constant current setting values) Input reverse polarity protection: Yes, Constant current range: 0.2-3A (adjustable, default transferred 1A) Turn lamp current: constant current value * (0.1), turn the lamp current constant current value Linkage Benefits: Stepless adjustment of the output voltage Stepless adjustment of the output current LED indicator, Red under load / Green on load free Multiturn potentiometer with long life Up to 1.5V (Typ. 1.16V) difference between the input and output voltages Up to 2.5A output current Very low power consumption at idle, about 10mA (0.01) Temperature protection Input voltage to 60V High stability of the output voltage High efficiency No need additional cooling to 2.2A High frequency DC/DC conversion, leading to size reduction of the device Application: Charger for all batteries in the range 1.23V ~ 28V, only set the precise battery voltage and charging current High conversion when used in car Adjustable laboratory voltage source LED driver with constant current Dimming devices Laboratory power supply Note: Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you XL6009: The XL6009 is a 4A switching current boost (BOOST) module. The module uses high-frequency switching technology XL6009E1 as the core chip, the performance is superior to LM2577. The XL6009 boost module is less expensive and performs better, and the LM2577 module is about to be phased out. Ultra-wide input voltage 3V~32V, zui go