JZ - Pololu 2571 - Pololu Adjustable 9-30V Step-Up Voltage Regulator U3V50AHV
search
  • JZ - Pololu 2571 - Pololu Adjustable 9-30V Step-Up Voltage Regulator U3V50AHV
ID: 210790
zł151.25
Tax included

zł122.97 tax excl.

This powerful boost regulator efficiently boosts input voltages as low as 2.9 V to a higher, adjustable output voltage between 9 V and 30 V while allowing an input current as high as 5 A.

6 weeks
On request
Kamami is the official distributor of electronic modules and Pololu robotic parts. All products of this brand in our offer are original and come directly from the manufacturer.

 

Free shipping

free shipping in Poland for all orders over 500 PLN

 

Same day shipping

If your payment will be credited to our account by 11:00

 

14 days for return

Each consumer can return the purchased goods within 14 days

Overview:

These adjustable boost (step-up) voltage regulators generate higher output voltages from input voltages as low as 2.9 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and have a typical efficiency between 80% to 95%. The available output current is a function of the input voltage, output voltage, and efficiency (see the Typical Efficiency and Output Current section below), but the input current can typically be as high as 5 A. The U3V50x regulator family includes two adjustable-output versions: the U3V50ALV offers an output range of 4 V to 12 V and the U3V50AHV offers an output range of 9 V to 30 V. Versions of this regulator are also available with a fixed 5 V, 6 V, 9 V, 12 V, or 24 V output:

Select options:

The different versions of the board all look very similar, so the bottom silkscreen includes a blank space where you can add your own distinguishing marks or labels.

The no-load quiescent current depends on the difference between the input and the output voltage. When the two are close, the quiescent current can be less then a milliamp (e.g. 0.6 mA with 5 V in and 6 V out); when the two are far apart, it might be in the tens of milliamps (e.g. 24 mA with 3 V in and 24 V out).

This regulator has built-in reverse-voltage protection, over-current protection, thermal shutdown (which typically activates at 165°C), and an under-voltage lockout that causes the regulator to turn off when the input voltage is below 2.5 V (typical).

Features:

  • Input voltage: 2.9 V to VOUT
  • Output adjustable from 4 V to 12 V or 9 V to 30 V
  • 5 A switch allows for input currents up to 5 A
  • Integrated reverse-voltage protection, over-current protection, over-temperature shutoff, and under-voltage lockout
  • Typical efficiency of 80% to 95%, depending on input voltage, output voltage, and load
  • Compact size: 1.9″ × 0.6″ × 0.41″ (48 × 15 × 10.5 mm)
  • Two mounting holes for #2 or M2 screws
  • Smaller holes for 0.1″ header pins and larger holes for terminal blocks offer several options for connecting to the board

Using the regulator:

Connections:

This boost regulator has four connections: input voltage (VIN), ground (GND), and output voltage (VOUT), and ENABLE.

The regulator is enabled by default: a 100 kΩ pull-up resistor on the board connects the ENABLE pin to reverse-protected VIN. The ENABLE pin can be driven low (under 0.7 V) to put the board into a low-power state. The quiescent current draw in this sleep mode is dominated by the current in the pull-up resistor from ENABLE to VIN and by the reverse-voltage protection circuit, which will draw between 10 µA and 20 µA per volt on VIN when ENABLE is held low. If you do not need this feature, you should leave the ENABLE pin disconnected. Note that like most boost regulators, the input power will pass through to the output when the board is disabled, so the ENABLE pin cannot be used to turn off power to the load.The input voltage, VIN, must be at least 2.9 V and should not exceed the output voltage, VOUT. (If VIN is higher than VOUT, the higher input voltage will show up on the output, which is potentially dangerous for your connected load and could also damage the regulator.)

Note that this regulator has a thick PCB (0.093″), so terminal block and header pins will not protrude as far through the holes as they would with typical 0.062″-thick PCBs.The connections are labeled on the back side of the PCB, and the board offers several options for making electrical connections. The eight smaller through-holes on the ends of the board are arranged with a 0.1″ spacing for compatibility with solderless breadboards, connectors, and other prototyping arrangements that use a 0.1″ grid; you can solder pieces of the included 9×1 straight male header strip into these smaller holes. Alternatively, you can solder the included 2-pin 5mm-pitch terminal blocks to the two pairs of larger holes on the ends of the board. For the most compact installation, you can solder wires directly to the board.

Setting the output voltage:The board has two mounting holes intended for #2 or M2 screws. The mounting holes are at opposite corners of the board, separated by 1.7″ horizontally and 0.4″ vertically.

The output voltage can be adjusted using a multimeter and a light load (e.g. a 10 kΩ to 100 kΩ resistor). Turning the potentiometer clockwise increases the output voltage. The output voltage can be affected by a screwdriver touching the potentiometer, so the output measurement should be done with nothing touching the potentiometer (also, note that touching parts of the board with your finger can affect the output voltage).

Warning: You should be careful not to use an input voltage that exceeds the output voltage setting, so we recommend setting the output voltage with an input voltage that is below anything in the possible output range. Note that the potentiometer has no physical end stops, which means that the wiper can be turned 360 degrees and into an invalid region in which the output voltage is set to approximately 3.9 V for the U3V50ALV and 8.3 V for the U3V50AHV. We do not ship these with any particular default voltage setting.

Note: The trimmer potentiometer is not rated for continual adjustment back and forth; the intended application is to set the output voltage a few times in its life.The absolute limit for the input voltage is approximately double the output voltage setting. For example, if the output is set to 10 V, exceeding 20 V on the input could permanently damage the regulator. Once the input exceeds the output set point, the output voltage will rise with the input voltage since the input is connected to the output through an inductor and a diode.

Typical efficiency and output current:

The efficiency of a voltage regulator, defined as (Power out)/(Power in), is an important measure of its performance, especially when battery life or heat are concerns. As shown in the graphs below, these switching regulators have an efficiency of 80% to 95% for most combinations of input voltage, output voltage, and load.

The maximum achievable output current is approximately proportional to the ratio of the input voltage to the output voltage. If the input current exceeds the 5 A switch current limit, the output voltage will begin to drop. Additionally, the maximum output current can depend on other factors, including the ambient temperature, air flow, and heat sinking.

During normal operation, this product can get hot enough to burn you. Take care when handling this product or other components connected to it.

Dimensions:

Size: 0.6″ × 1.9″ × 0.41″1
Weight: 7.5 g2

General specifications:

Minimum operating voltage: 2.9 V
Maximum operating voltage: 30 V3
Maximum input current: 5 A
Minimum output voltage: 9 V
Maximum output voltage: 30 V
Reverse voltage protection?: Y
Maximum quiescent current: 30 mA4

Identifying markings:

PCB dev codes: reg13b
Other PCB markings: 0J7769, blank white box

Notes:

1 Without included optional headers or terminal blocks. Height with terminal blocks installed is approximately 0.5″.
2 Without included optional headers or terminal blocks. Terminal blocks add 3.4 g.
3 The operating voltage should not exceed the set output voltage, VOUT.
4 Typical worst case (i.e. with VIN at 3 V and VOUT at 30 V). Quiescent current depends on the input and output voltages and is much lower for most of the input voltage range. The ENABLE pin can be used to reduce this to well under 1 mA.
210790

Data sheet

Output voltage
9 - 30 V
Output current
5A
Converter type
Step-up
Supply voltage min
2,9 V
Supply voltages max
30 V

Other products in the same category (16)