LM2596S:

1. the range of input voltage: 3.2 V to 40 V dc (input voltage must be higher than to the output voltage of 1.5 V above. Can't booster)
2. the range of output voltage: 1.25 V dc to 35 V voltage adjustable, high efficiency (92%) largest maximum output current is 3A.

Input voltage :4V ~ 35V
The output voltage : 1.23V ~ 30V
Output Current :3A( Max)
Conversion efficiency:92%( MAX )
Output ripple: <30mV
Switching frequency: 150KHz
Working temperature: -forty Five~ +85
Size :43mm * 21mm * 14mm(Long*Width*Hight)

Instructions:
1. Power (3-40V), power indicator light, the module is working properly.

2. Adjust the blue potentiometer knob (clockwise rotation generally boost,counter-clockwise rotationTurn down) and reach with a multimeter to monitor the output voltage required voltage.

Note:

Current work long hours is recommended for use in less than 2.5A, while adding bulkHeat sink (10W output above),because it is the step-down module, in order to ensure stable output Set,please keep the minimum 1.5V differential.

LM2596S-DIP:

Dense vias, heat and strong!
Increase in the input and output terminals respectively X7R high-Q high frequency bypass capacitor, electromagnetic compatibility super!
Input voltage range: DC 3.2V to 35V (input voltage must be higher than the voltage output to 1.5V or more can not be boosted.)
Output Voltage Range: 1.25V to 30V DC voltage is continuously adjustable, high efficiency (maximum 92%) of the maximum output current of 3A.
Found 12V input, load regulation 5V 1A output current is lower than 1%
Note: The input and output can not be reversed, reverse might burn chips;
This is a step-down module, the input voltage is higher than the required output voltage;
Output 2A or less long period of time without additional heat sink output current is greater than 2.5A (or output power greater than 10W) to work long hours please add heat sink.
Electrical parameters:
Input: DC 3.2V to 35V (input voltage must be more than the output voltage can not be higher than boost 1.25v.)
Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.
Features: All solid capacitors using SANYO, 36u thick circuit boards, high-Q inductors with high power output LED indicator
Size: 41 (L) * 20 (W) * 14 (H) mm (including potentiometers) Taobao minimum with locating hole with LED indicator DC-DC
Instructions:
Access to power (3-35V), 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.
Application examples:
1. The vehicle power supply, only need to enter this module termination point the car cigarette power supply, you can adjust the potentiometer, the output voltage can be adjusted in 1.25-30V, for your phone, MP3, MP4, PSP charging many devices powered, very simple and convenient.
2. The power to the electronic device when the device needs 3-30V power supply voltage corresponding to the hand while using this module you can easily put the voltage to the desired voltage and solve problems.
3. The system voltage test can be used to make this project a variety of debugging module voltage test system operating voltage range, very easy and convenient.

LM2596S-LED：

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 good working voltage range is 5~32V;
● Ultra-wide output voltage 5V~35V;
● Built-in 4A high efficiency MOSFET switch tube, the efficiency is up to 94%; (LM2577 current is only 3A)
● The switching frequency is 400KHz, which can achieve very good results with a small-capacity filter capacitor. The ripple is smaller and the volume is smaller. (LM2577 frequency is only 50KHz)

Technical Parameters:
Model specification：XL6009 boost module
Modular nature：Non-isolated boost (BOOST)
Rectification method：Asynchronous rectifier
Input range：3V~32V
Output range：5V~35V
Input Current：4A (maximum ), no load 18mA (5V input, 8V output,no load less than 18mA. The higher the voltage,
the greater the no-load current.)
Conversion efficiency：<94%(the greater the pressure difference,the lower the efficiency)
On-off level：400KHz
Output ripple：50mV(the higher the voltage,the larger the current,the larger the ripple)
Hello Elena：±0.5%
Voltage regulation：±0.5%
Operating temperature：-40°C~ +85°C
Dimensions 43mm * 21mm (L*W)

IN+ input positive
IN- input negative
OUT+ output positive
OUT-output negative!

Test comparison sample reference:
Input 5V output 12V 0.8A 9.6W
Input 7.4V output 12V 1.5A 18W
Input 12V output 15V 2A 30W
Input 12V output 16V 2A 32W
Input 12V output 18V 1.6A 28.8W
Input 12V output 19V 1.5A 28.5W
Input 12V output 24V 1 A 24W
Input 3V output 12V 0.4A 4.8W

Vin*Iin* efficiency = Vout*Iout

Vin: input voltage
Iin: Input current
Vout: output voltage
Iout: output current