Is your project board going to require a 3,3V consistent power supply? Here is the most cost-effective answer to your problem…! Buy this DC-DC 1.8V-5V to 3.3V Booster and Buck Power Modules in a small size (11 x 7 mm) that provides a consistent 3.3V DC output with an input supply range of 1.8 to 5 VDC. The buck-boost module steps up the voltage when the input is less than 3V and steps down the voltage when the input is greater than 3.3V, hence the name.

Circuit Diagram:

Features and Specifications:

1. Input Voltage: 1.5V to 5V DC
2. Output Voltage: 3.3V DC
3. Dimensions (L x W)mm:  11  x 7

Package Includes:

1 x DC-DC 1.8V-5V to 3.3V Boost and Buck Power Module

This CN6009 XL6009 DC – DC Step-up converter module is a non-isolated step-up (boost) voltage converter featuring adjustable output voltage and high efficiency.

The module uses the second generation of high-frequency switching technology XL6009E1 core chip performance than the first generation technology LM2577. XL6009 boost module at a lower cost, superior performance.

It equips 4A high-efficiency MOSFET switches, so as to provide a conversion efficiency of up to 94%.

High switching frequency 400KHz, you can use a small -capacity filter capacitors that can achieve very good results, the ripple is smaller and smaller

Pins

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

Features :

1. The performance is much higher than LM2577.
2. Non-isolated Boost converter.
3. It has a non-synchronous rectifier.
4. Small and Handy voltage regulator module.

Package Includes :

1 x CN6009 XL6009 DC-DC Step-up converter module.

Dual Display 5A Power Adjustable Step-Down Constant-Voltage Constant-Current Power Module （With Case)

Specifications:

1. Input Voltage: DC 5V-32V
2. Output Voltage: DC 5V-60V Continuously adjustable (only applies to the input voltage is less than the output voltage occasion, can not buck)
3. Input Current: Max 16A (More than 8A. Please enhance heat dissipation)
4. Output Current: Max 8A (More than 4A, Please enhance heat dissipation)
   (Related to input and output dropout voltage, the greater the dropout voltage the smaller the output current)
5. Output Power: Max 90W in natural cooling, Max 150W in enhance heat dissipation.
6. Module Properties: non-isolated step-up module BOOST
7. Constant Current Output Range: 0.3-8A
8. Working Temperature:-40°C ~ +85°C (when ambient temperature is too high. please enhance heat dissipation)
9. Working Frequency: 150KHz
10. Conversion Efficiency: Up to 95% (efficiency of input and output voltage, current. dropout voltage related)
11. Short Circuit Protection: Yes (input 15A fuse)
12. Input Reverse Polarity Protection: None (If you need, please install diode by yourself)
13. Output Indicator: with charging indicator, charging yellow, Full blue.
14. Anti-anti-irrigation Output: Yes
15. Connection: terminals or solder terminals, IN is input, OUT is output
16. Dimensions: 80 x 53 x 35 L*W*H
17. Weight: 135g

Calibration:
This module has a calibration function, don’t worry about the problem of inaccurate measurements. If you found inaccurate measurement, can use the following method of calibration. Just for the first time using a calibrated once!

Voltage Calibration: when power off status, keep pressing the “set” key. power on, enter the voltage calibration mode. then the LCD screen starts flashing. release the “set” key, press the “Set” button to increase, press the “ENT” button to reduce, until calibrated to the correct input voltage. For example, the input voltage is 12.65V, then the voltage was adjusted to 12.65V. then automatically saved after 2 seconds, power off, calibration is complete!

Special Instruction:
Some customers feedback that the output voltage of module can not be adjusted When they just receive the item, this is because the module factory defaults output voltage at about 20V. When you encounter this problem. Please counterclockwise rotation ADJ-V potentiometer 10 laps or more, until the voltage value changes, then the module can properly adjust the voltage.

Setting Instruction:
Setting key to set the display node, it has three types:
1, F-0 mode: Display output voltage:
2, F-1 node: Display input voltage:
3, F-2 mode: Alternating display input or output voltage

Instructions: Press the “SET” button to cycle through the three display modes, the corresponding indicator will be on or off, then press the “ENT” button to save and exit. if separate press the ‘ENT” button to switch the backlit LCD screen.

Using Instructions:
Adjusting Voltage: under no-load conditions, adjust the “constant voltage potentiometer ADJ-V”, so that the output voltage reaches the value you want: Adjustment Current: connected to the load, adjust the “constant current potentiometer ADJ-I”, so that the output current reaches the current value you want (the factory default is more than 2A, if you want to adjust the current value is small. more counter-clockwise tune laps will change), if you do not need constant current, it doesn’t need adjustment:

Indicator color change instruction: Charge turn lamp current factory default is 0.1 times the charging
current: battery during charging. the current is gradually reduced, gradually turned from the constant current charging to constant voltage charging, if the charging current setting is IA, then when the charge current is less than 0.1A. the charging yellow indicator light off, full of blue indicator lights up and the battery is fully charged.

Features:

1. Wide input voltage: 5V-32V; Output voltage: 5-60V; The maximum output current is 8A; The maximum output power is 150W
2. The module adopts the deliciated crystal shell and the LCD digital display, can full-screen display voltage and current; surrounded by hollow design, good to the heat dissipation
3. The conversion efficiency up to 95%; the operating temperature: -40 ~ +85 degrees
4. With the calibration function and short-circuit protection, easy to operate; the shell floor has a fan openings, can add fan to strengthen the heat dissipation
5. Widely suitable for direct drive LED, solar panels, wind turbines etc.

Package Includes:

1 x Dual Display 5A Power Adjustable Step-Down Constant-Voltage Constant-Current Power Module.( with case )

XL4015 5A Variable Voltage & Current Step Down Power Module with LED Display provides output voltage and current limit adjustment in a compact module with built-in display. This compact DC-DC module is an adjustable XL4015 based voltage step-down (buck) converter module with the addition of a current limiting adjustment and a daughter board that provides a display of the output voltage and current.  This makes it convenient to use for a number of different applications such as for charging batteries, using as a constant current LED driver or serving as a small adjustable power supply with current limiting.

The module is rated for an input of 5V – 30V with an output voltage of 0.8V – 29V at up to 5A.  The module runs very comfortably at 1.5A and should be limited to around 3A unless some air flow is provided through the module to help keep things cool.

Features:

1. Built-in display of output voltage and current
2. Output voltage adjustment and Output current limit adjustment
3. Output current up to 5A with cooling and 3A without cooling
4. Input voltage range 5 to 30V and Output voltage range 0.8 to 29V
5. High efficiency: The module uses chips with high efficiency up to 95%, and can go to 5A current.
6. The voltage difference between input and output is 1V, with a minimum output voltage of 0.8v.
7. This module is an adjustable step-down module. The output voltage can be changed by adjusting the blue adjustable resistor on the module.
8. Module above marked IN-(input negative), IN+(input positive), OUT-(output negative), OUT+(output positive) must be correctly connected, otherwise it may lead to module damage.

Specifications:

1. Model: XL4015 With Display
2. Input voltage: 5V-30V
3. Output voltage: 0.8V-29V
4. Output current: 3A (without air cooling), 5A (with forced air cooling)
5. Conversion efficiency: 95% (highest)
6. Switching frequency: 300KHz
7. Input impedance: 50 milliohms
8. Output ripple: 50mV (max) 20M bandwidth
9. Load regulation: ± 0.5%
10. Voltage regulation: ± 2.5%
11. Operating temperature: -40 ℃ to +85 ℃
12. Length (mm): 52
13. Width (mm): 27
14. Height (mm): 21
15. Weight (gm): 80

Package Includes:

1 x XL4015 5A Variable Voltage & Current Step Down Power Module with DUAL LED Display

Dual Display 3A DC-DC 5-23V To 0-16.5V Step Down Power Supply Buck Converter Adjustable LCD Step- down Voltage Regulator. digital dc-dc voltage regulator module is equipped with STC LCD screen. It can display the output voltage and current dual parameter to make it more convenient to read the voltage value, it can also support reverse protection. In addition, On-board tactile push button to regulate the output voltage better than the potentiometer. Meanwhile , this product with outer shell design compared with other DIY product. Once assembled, it will turn into a portable digital voltmeter also protect the module.

Work Parameter Input voltage: 5-23V, Output voltage: 0.01-18V continuously adjustable, automatically save the last set voltage (input voltage must be higher than the output voltage by more than 1V).Output current: maximum 3A, it is recommended to use within 2A, if the heat is large, please solve the heat dissipation problem by yourself. Note: The current size is adaptive according to the load, not adjustable.

Features:

1. Input voltage: 5-23V.
2. Output voltage: 0-16.5V..
3. Mini input output voltage difference: 1V.
4. Maximum Output current: 3A (suggest 2A during use, over 2A need the heatsink).
5. Display Accuracy: 1%.
6. Maximum Conversion Efficiency: 95%.
7. Load Regulation: S (I) ≤0.8%.
8. Voltage Regulation: S (u) ≤0.8%.
9. LCD Display Resolution: 0.01.
10. Module Size: 62*44*18 mm.

Specification:

1. Material: electrical components.
2. Color: as picture shows
3. Converter Type: DC-DC.
4. Input voltage: 5 ~ 23V (better voltage 20V).
5. Output voltage: 0V ~ 16.5V (continuously adjustable).
6. For peak current: 3A…
7. Motherboard Size: approx. 50 x 30 x 12 mm (L x W x H).
8. Display Module: STN LCD.
9. LCD Size: approx. 37.5 x 17.0 mm (L x W).
10. LCD Accuracy: 1%.
11. Conversion efficiency: 95%.
12. Load regulation (I): <= 0.8%.
13. Voltage regulation (U):  0.8%.
14. Quantity: 1pc..

Package Includes:

1 x Dual Display 3A DC-DC 5-23V To 0-16.5V Step Down Power Supply Buck Converter Adjustable LCD Step- down Voltage Regulator.

This is a Type-C USB 5V 2A Step-Up Boost Converter with a USB Charger. Great Step-up Module with 5V input, output 5V for many digital devices, so this is really a great module for designing a portable charger. Useful for your USB charger projects and onboard USB device supply solutions.

Function:

1. When the load current is less than 50mA continuously, the output will be turned off.
2. It supports the external key, which is connected to the K point and the output negative pole. Short press to turn on the power display and turn on the 5V output. Two consecutive short presses will turn off the power display and turn off the 5V output.
3. When the charging current drops to 100mA after reaching the final floating charging voltage, the charging cycle will be automatically terminated.
4. When the battery voltage drops below 4.1V, the charging cycle starts again.
5. When the battery voltage is lower than 2.8V, the battery will be precharged with a current of 180mA.
6. The USB-a base welding position is provided on the back of the product, which can be installed manually.
7. It supports discharging while charging.

Connection Diagram:

Features and Specifications:

1. Input voltage range: 5-5.5V
2. Charging cut-off voltage: (4.2V/4.35V) ±0.5%:
3. Charging current: 2.4A±5%
4. Boost output voltage: 5V5.15V (wire loss compensation)
5. Boost output voltage ripple: 100mV
6. Boost output current: 2A
7. Boost conversion efficiency: 92.5% (3.6V input, 5V2A Output)
8. Battery end quiescent current: 30uA
9. Material: Metal and Plastic

Package includes:

1 x Type-C USB 5V 2A Step-Up Boost Converter with USB Charger