Step-Down Voltage Regulator D24V5F1 - 1,8V 0,5A - Pololu 2840

Index: PLL-03107 EAN: 5904422367190

A step-down pulse inverter module with an efficiency of 80 % - 93 %. Converts the input voltage from 3 V to 36 V to an output value of 1.8 V. The maximum continuous current is 0.5 A.

Step-Down Voltage Regulator D24V5F1 - 1,8V 0,5A - Pololu 2840
€6.50
€5.28 tax excl.
Waiting time: 4-6 weeks
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Manufacturer: Pololu

Product description: PololD24V5F1 - step-down converter - 1.8 V 0.5 A

The DC-DC pulse controller converts the input voltage from3 V* to 36 Vinto an output value of1.8 V. It allows a current consumption of up to 0.5 A. The system has a high efficiency of 80 % - 93 %.

 Pololu D24V5F1 - przetwornica step-down - 1,8V 0,5A

Pololu D24V5F1 - step-down converter - 1.8 V 0.5 A.

We offer versions with output voltages:1,8V,2,5V,3,3V,5V,6V,9V,12Vand15V.

Quotations

The module has four outputs:

  • VIN- input voltage from 3 V to 36 V - depending on the drop-out voltage.
  • GND- ground potential.
  • VOUT- output voltage.
  • SHDN- low state (below 0.4 V) switches the system into low power consumption mode, where it consumes only 10 uA - 20 uA for each Volt of the supply voltage. Pin is pulled to VIN by default through a 100 kΩ resistor. If the low-power mode is not usedSHDNcan be left unconnected.

You can solder the popular goldpin raster pinned outputs to 2.54 mm (the set is included). The module can be plugged into thecontactboard,connected with wiresor placedin a dedicated printed circuit board.

Efficiency and output current

Efficiency is defined as the ratio of output power to input power (Power out)/(Power in). This is a very important parameter when working with portable energy sources (batteries and accumulators), where the time of operation on one charging cycle counts. The efficiency dependence on the input voltage is shown in the graphs below.

Voltage drop-out

For versions with an output voltage of 1.8 V, the drop-out voltage is 1.2 V. This means that the input voltage must be at least 3 V to reach the catalogue output voltage.

Dangerous voltage pulses

When connecting the power supply to the module, dangerous, short, high amplitude eclectic impulses (so-called pins) may appear, which may permanently damage the system. Polol's tests show that for voltages above 20 V,the pinsmay have an amplitude exceeding 42 V. In order to protect against this undesirable phenomenon it is recommended to solder a capacitor of at least 33 uF / 50 V as close as possible to the pins supplying the inverter.

Specification

  • Input voltage: 3 V* to 36 V
  • Output voltage: 1,8 V
  • Accuracy of output voltage: 4 %
  • Maximum output current: 0,5 A
  • Switching frequency: 500 kHz
  • Built-in security:
    • against excessive power consumption
    • before too high a temperature
  • Controller: ISL85415(documentation)
  • Dimensions: 13 x 10 x 3 mm
  • Weight: 5 g (without connectors)

Length 13 mm
Width 10 mm
Height 3 mm
Voltage to 3.0 V
Voltage from 36 V
Voltage output from 1.8 V
Output voltage to 1.8 V
Nominal output voltage 1.8 V
Current 0.5 A
Stabilizer - Type2 switching
Stabilizer - Type step-down
Package width 7.7 cm
Package height 8 cm
Package depth 0.2 cm
Package weight 0.002 kg

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