Regulador de Voltaje Boost Ajustable 4-25V
[pol-799]

Regulador de Voltaje Boost Ajustable 4-25V
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Regulador de Voltaje Boost Ajustable 4-25V

La técnica de conmutación de este regulador permite poder producir un voltaje mayor de un voltaje de entrada menor no regulada.

efectivo para proteger nuestros proyectos de voltajes no deseados y ruidos

permite ajustar el voltaje de salida con exactitud.

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Caracteristicas

  • Voltaje de Entrada: 1.5? V to 16? V
  • Voltaje de Salida Ajustable ? 4? V to 25? V
  • Frecuencia switching 750 kHz
  • 2? A switch (and input) limit
  • Protecion de Sobre temperatura y sobre corriente.
  • typical efficiency of 80-90% when doubling voltage and with 100-500? mA output
  • Tamaño: 10.7? x? 22.4? x? 5.8? mm
  • Peso sin pines: 1.6? g

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Overview

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The Pololu adjustable boost regulator is a very flexible switching regulator (also called a switched-mode power supply, SMPS, or DC-to-DC converter) that can generate voltages higher than its input voltage. We offer two adjustable ranges: approximately? 2.5? V to 9.5? V? and? 4? V to 25? V. The output voltage can be set using the trimmer potentiometer in the upper-right corner of the board. The input voltage range is 1.5? V to 16? V (the input voltage should be kept below the output voltage). The integrated 2? A switch allows for output currents high enough to drive small motors, as in our? 3pi robot, and allows large voltage gains, such as obtaining 24? V from two NiMH or NiCd cells.

Note:? For high-volume applications, this product can be customized with fixed output voltages ranging from 2? V to 30? V.

Some example applications include:

  • Powering 5? V or 3.3? V systems from lower-voltage batteries.
  • Powering 5? V subsystems (e.g. sensors) in lower-voltage (e.g. 3.3? V) systems.
  • Achieving consistent actuator operation when powered by fluctuating batteries
  • Powering high-brightness LEDs or a large number of LEDs in series

Feature summary

  • input voltage: 1.5? V to 16? V
  • output adjustable from? 2.5? V to 9.5? V? or? 4? V to 25? V
  • 750 kHz switching frequency
  • 2? A switch (and input) limit
  • integrated over-temperature and over-current shutoff
  • typical efficiency of 80-90% when doubling voltage and with 100-500? mA output
  • small size: 10.7? x? 22.4? x? 5.8? mm (0.42"? x? 0.88"? x? 0.23")
  • weight without header pins: 1.6? g (0.06? oz)

Using the Boost Regulator

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Connections

The boost regulator has just three connections: the input voltage, ground, and the output voltage. These three connections are labeled on the back side of the PCB, and they are arranged with a 0.1" spacing along the edge of the board for compatibility with solderless breadboards, connectors, and other prototyping arrangements that use a 0.1" grid. You can solder wires directly to the board or solder in either the 3×1straight male header strip? or the 3×1? right-angle male header strip? that is included.

Setting the output voltage

The output voltage can be adjusted using a meter and a light load (e.g. a 1k 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. 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 2.5? V (for both the 2.5? V to 9.5? V and 4? V to 25? V versions). The input voltage should not exceed the output voltage, so we recommend setting the output voltage with the input voltage set to around 2.5? V.

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  Sunday 18 November, 2018     25428883 peticiones desde Monday 11 April, 2005