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Voltage Regulator Modules

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2858-POLOLU 5V, 2.5A Step-Down Voltage Regulator D24V22F5
US$29.92
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.5 A and features reverse voltage protection. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. An optional shutdown pin enables a low-power state with a current draw of around 20 μA to 350 μA, depending on the input voltage, and a power-good output indicates when the regulator cannot adequately maintain the output voltage.
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PSM-335 5VDC USB Input to 12 VDC 1A Max Adaptor Cable with 2.5x5.5mm Output Connector
US$6.29
This neat cable adaptor allows you to power your 12VDC devices from a standard USB connector. Basically, it takes the 5VDC input from any USB connector and steps it up to 12VDC. The amperage supply varies depending on the USB output source. Note that a regular USB 1.0 and 2.0 connectors from a computer supplise 500 mA whereas a charging brick can go up to 2.5A depending on the model. The higher amperage input the cable takes, the higher it can supply but with a limit of 1A maximum.
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PSM-340 5VDC USB Input to 9VDC 0.8A Adaptor Cable with 2.5x5.5mm Output Connector 0.8A Max
US$7.95
This neat cable adaptor allows you to power your 9VDC devices from a standard USB connector. Basically, it takes the 5VDC input from any USB connector and steps it up to 9VDC. The amperage supply varies depending on the USB output source. Note that a regular USB 1.0 and 2.0 connectors from a computer supplise 500 mA whereas a charging brick can go up to 2.5A, depending on the model. The higher amperage input the cable takes, the higher it can supply but with a limit of 0.8A maximum.
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MOT-PCA9685-A I2C PCA9685 16-Channel PWM / 12 – bit Servo Driver
US$12.53
This module allows users to connect to Raspberry pi or Arduino to control multiple motors using i2c protocol. You can also drive LEDs with the module and supply external voltage and current. You can drive up to 16 PWM outputs using four wires from your microcontroller. You can buy a bunch and have up to 6 address to select resulting in 62 modules with a total of 992 outputs.
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DFR0508 FireBeetle Covers - DC Motor & Stepper Driver
US$26.25
DFRobot FireBeetle series are low power consumption microcontrollers designed for Internet of Things (IoT) development. FireBeetle Covers-DC Motor & Stepper Driver is a DC motor & Stepper Motor driver designed for FireBeetle Microcontrollers. It can control up to four-channels DC motors / two-phase four-wire stepper motors simultaneously. The motor driver cover integrates a STM8 as its coprocessor, controlling the motor speed and direction. It communicates with Microcontroller via IIC port, supports up 1000Hz refresh rate. The assisted processor STM8 controls motors and set the main control free. It effectively reduces the dependence on MCU pin resources and MCU occupancy. Independant motor control make the multi-motors projects more affordable. Cooperate with DFRobot Arduino Motor Library, it will reduce your development difficulty.
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AC to DC 5v Voltage Regulator Module 7805
US$6.93
The famous 7805 5 Volt DC regulator circuit is a great introduction to electronics. Now in a preassembled board you can use this mini device to convert AC voltage into DC regulated 5v output. Depending on the amperage of the transformer selected, you have a 5v power supply unit. There is a terminal block connector available on the other side.
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PSM-330 5A DC-DC Step Down Voltage Converter with Volt and Ammeter
US$13.93
Often referred as a BUCK converter this little unit is smaller than a AA battery in terms of length. What is great about this device is it can step down 38v to 1.25v with a amperage of 5. If you decide you want an output of more than 50 Watts please consider adding a heatsink. This Step Down Converter also comes with a nice LCD screen for reading the measurement of Current and Voltage.
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PSM-315 DC-DC Step Down Converter w/Voltage Display. LM317T
US$13.93
This handy DC-DC step down converter module can supply an output up to 1.5A at 1.2 to 37 VDC. Input supply range is from 4.2 to 40 VDC as well as 0-20 VAC. Output voltage is adjustable by a single turn potentiometer w/knob. Output voltage is displayed on a 3 digit display.
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PSM-325 DC-DC 5A Step Down Converter w/USB Charging Output and Acrylic Mounting Frame Kit
US$13.93
This versatile DC-DC 5A step down converter can supply an output of 1.25 to 32 VDC from an input of 5 to 36 VDC. Output voltage and current are adjustable with precision 25 turn potentiometers. Output voltage and current can be displayed on the 4 digit display. Includes USB connector for 5 volt charging applications. Can be used as a precision battery charger with voltage and current limiting control.
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PSM-320 DC-DC Step Down Converter 4.2 to 40 VDC, LM317T
US$4.19
This super compact DC-DC step down converter can supply an output up to 1.5A at 1.2 to 37 VDC. Input supply range is from 4.2 to 40 VDC. Output voltage is adjustable by 25 turn potentiometer.
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PSM-310 9-35VDC to 5V 5A 25 Watt DC-DC Stepdown Converter
US$9.85
This module will take 9 to 35 DC voltage and step down to a constant 5vdc output. The unit can handle up to 5Amps, this does not mean the device will constantly output 5amps. Should you go over 3 amps at the input, we would strongly suggest to add additional cooling fans or heatsinks. Insert VCC in IN+, GND into GND and for the output VOUT goes into OUT and GND is shared with the input ground.
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PSM-305 DC-DC 7V-28V to 5V 3A Fixed Step Down Converter Module
US$4.19
Need to supply your circuit/project with 5VDC but all you have at your disposal is a source between 7V-28VDC? This module without a doubt will help you do just that. This module allows anyone to input up to two stable DC voltage signals in the range of 7VDC -28VDC to in turn output up to two 5VDC signals. No matter the input, the output will always be fixed to 5V as long as the input stays in the specified range. The maximum outputted current can be as high as 2.5A prompting a heat sink requirement.
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PSM-300 Mini DC-DC 4.5-24V to 1.8-17V 3A Adjustable/Fixable Step Down Converter Module
US$3.14

This module is great for projects that need to regulate different voltage levels. Input any DC voltage signal and configure the board to output stepped down voltage that suits your project’s needs. The input voltage ranges from 4.5 to 24VDC while the output ranges from 1.8 to 17VDC. The maximum current this module can output is capped at 3A with some additional heatsink required. What makes this board stand out is its ability to give its user the option to either adjust the output voltage using the potentiometer or to fix the output to a desired voltage by cutting the trace on the backside of the board to the potentiometer and soldering the pad representing a fixed voltage you desire. (see image for example) The fixed voltage options are: 12V, 9V, 5V, 3.3V, 2.5V and 1.8V.

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2836-POLOLU 5V Step-Up/Step-Down Voltage Regulator S9V11F5
US$29.90
The S9V11F5 switching step-up/step-down regulator efficiently produces 5 V from input voltages between 2 V and 16 V. (Note: it requires an input voltage of at least 3 V to start, but it can operate down to 2 V after startup.) Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 5 V. The very compact (0.3″ × 0.45″) module has a typical efficiency of over 90% and can supply a typical output current of up to 1.5 A when the input voltage is around 5 V.
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5V, 2.5A Step-Down Voltage Regulator D24V25F5
US$52.55
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.
Delivery within 2-3 weeks
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