Block diagram of the 5V, 300mA Isolated Step-Down Voltage Regulator D24Z3F5.
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  • Block diagram of the 5V, 300mA Isolated Step-Down Voltage Regulator D24Z3F5.
  • Block diagram of the 5V, 300mA Isolated Step-Down Voltage Regulator D24Z3F5.
ID: 1207056
zł28.24
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zł22.96 tax excl.

Isolated DC-DC step-down regulator designed to reduce a 5.5–36 V input to a regulated 5 V output. It provides up to 300 mA of output current, an optional 5.5 V output setting, and galvanic isolation between the input and output sides. Pololu 5756

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Available quantity: 4
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Description

Voltage regulator Pololu 5756 combines an input step-down stage with an isolated DC-DC power module based on the Texas Instruments UCC33420RAQR. The module operates from a 5.5–36 V input and provides a regulated 5 V output with up to 300 mA of current. Operation down to approximately 4.6 V is also possible with reduced output current capability.

Output voltage is set to 5 V by default and can be changed to 5.5 V using the SEL input. Galvanic isolation separates the input GNDI ground from the output GNDO ground, helping prevent ground loops and unwanted current flow between connected circuits. Typical regulator efficiency is approximately 45–55%, depending on input voltage and load.

UCC33420 provides 3000 VRMS basic isolation and a maximum working isolation voltage of 820 VRMS. The EN input allows the regulator to be disabled, while the FLT output indicates conditions such as output undervoltage or thermal protection. The board features 2.54 mm pitch through-holes and a routed slot that increases the minimum PCB creepage distance to approximately 4.9 mm.

Features

  • Manufacturer: Pololu
  • Pololu product number: 5756
  • Model: D24Z3F5
  • Device type: isolated DC-DC step-down regulator
  • Isolation module: Texas Instruments UCC33420RAQR
  • Input voltage range: 5.5–36 V
  • Output voltage: 5 V default or 5.5 V selectable through SEL
  • Maximum output current: 300 mA
  • Output voltage accuracy: approximately 4%
  • Isolation: galvanic, 3000 VRMS basic isolation and 820 VRMS working isolation
  • Minimum PCB creepage distance: 4.9 mm
  • Typical efficiency: approximately 45–55%
  • No-load quiescent current: approximately 1–6 mA
  • Switching frequency: approximately 1.1 MHz for the step-down stage and 64.5 MHz for the isolation module
  • Control and diagnostics: EN input, FLT output, and SEL voltage selection
  • Protection: thermal protection; no built-in reverse-voltage protection
  • Pin pitch: 2.54 mm
  • Board dimensions: approximately 10.2 × 25.4 × 3.8 mm
  • Weight: approximately 0.8 g
1207056

Data sheet

Output voltage
5th
Output current
300 mA
Converter type
Step-down
Supply voltage min
5,5 V
Supply voltages max
36 V

Manufacturer

  • BTC Korporacja sp. z o. o.
  • Ludwinowo Zegrzyńskie 52G
  • 05-140 Ludwinowo Zegrzyńskie
  • Poland
  • [email protected]
  • 22 767 36 20

Responsible person

  • BTC Korporacja sp. z o. o.
  • Ludwinowo Zegrzyńskie 52G
  • 05-140 Ludwinowo Zegrzyńskie
  • Poland
  • [email protected]
  • 22 767 36 20

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