# Synchronous step-down module, 9-30V to 5V, 5A, fixed

> Synchronous, non-isolated step-down (buck) module for input voltages of 9-30VDC (maximum limit 35V), delivers a fixed 5V output, maximum current 5A, power 25W. Conversion efficiency up to 95%, synchronous rectification, drop-out voltage 4V, input reverse polarity protection. Connection via 3 screw terminals, common GND for input/output. Dimensions: 45 x 30 x 15 mm.

- Page: https://sigmanortec.ro/en/synchronous-step-down-module-9-30v-to-5v-5a-fixed
- Price: 21.02 RON
- Availability: Out of stock
- Reference: 9754 · EAN: 5943526219585
- Category: Electronic components > Step Down Modules
- Specifications: tension: AD; Supply Voltage: 9; Maximum Input Voltage: 30; Minimum Output Voltage: 5; Maximum Output Voltage: 5; Source Type: descend; Current Adjustment: Not; Voltage Adjustment: Not; Adjustment Type: Fixed; Maximum Output Current: 5
- Package (shipping data): 0.018 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

Synchronous buck converter for efficient power supply of 5V equipment from 9-30VDC sources, delivers up to 5A for consumers such as electronic boards, modules or peripherals. Offers efficiency up to 95% for reduced heating, stable fixed 5V output, synchronous rectification and reverse polarity protection, quick connection via screw terminals and common input-output GND.
Synchronous voltage reducer, designed to transform input voltages between 9 and 30VDC into a stable output voltage of 5V, with an output current of up to 5A.
ATTENTION: 35VDC is the upper limit. Use below this value, recommended up to 30V.
Being a non-isolated buck module (BUCK), it offers an efficient and reliable solution for the power supply needs of electronic devices that require a voltage of 5V. With a conversion efficiency of up to 95%, this module minimizes energy losses, being ideal for a wide range of applications.
It has protection against polarity reversal (diode) at the input, ensuring a safe and durable use of the module.
The module has screw connectors, three in number. The middle connector is common GND for both input and output.
Specifications:
Input Voltage: 9 - 30VDC (the maximum voltage limit is 35V. It is recommended to use a safety margin)
Type: Non-Isolated Buck Step-Down
Output Voltage: 5V fixed
Output Current: 5A
Output Power: 25W
Rectification Mode: Synchronous Rectification
Drop-Out Voltage: 4V
Conversion Efficiency: Up to 95%
Input Reverse Polarity Protection: Yes
Dimensions: 45 x 30 x 15 mm
Use:
Connect the positive terminal (+) of the power source to the In+ pin and the negative terminal (-) of the source to GND of the module. Make sure that the power supply does not exceed the maximum input voltage of 35V (recommended up to 30V).
Connect the positive terminal (+) of the device that requires power to the Out+ pin and the negative terminal (-) to GND of the module.
The GND pin is common for both input and output.
After the correct connection, the module will start to convert the input voltage into a stable output of 5V. Monitor the consumption so as not to exceed the 5A capacity of the module.