Product description: D30V30MASCMA - adjustable step-down converter with low voltage cut-off function - 4.2 V - 15 V 3 A - Pololu 4874
D30V30MASCMA is one of the modules from the series of miniature voltage regulators from Pololu , based on a synchronized step-down converter . It allows to obtain an output voltage from 4.2 V to 15 V from an input in the range of 4.2 V to 45 V. The maximum continuous output current depends on the input voltage and thermal conditions and is 3 A. It features the ability to precisely set the output voltage and low-voltage cutoff threshold voltage using built-in 11-turn potentiometers , which ensures the safety of powered systems and the ability to adapt to various design requirements. It also features a power saving mode and a "power good" indicator that indicates the stability of the output voltage. The compact size and standard pinout make it easy to integrate with prototypes and electronic devices.
D30V30MASCMA - adjustable step-down converter with low voltage cut-off function - 4.2 V - 15 V 3 A - Pololu 4874. 
D30V30MALCMA is one of the modules from a series of miniature voltage regulators from Pololu, based on a synchronized step-down converter.Special Features
- Adjustable output voltage range - the ability to precisely adjust the output voltage from 4.2V to 15V using a rotary potentiometer, allowing you to tailor the voltage exactly to your application needs
- Adjustable low voltage cut-off threshold - protects the device from too low supply voltage
- Maximum output current up to 3 A - the maximum current value depends on operating conditions, such as input voltage, output voltage and module cooling efficiency
- Wide input voltage range - from 4.2 V to 45 V, including dropout voltage, making the controller compatible with a variety of power sources, e.g. batteries, mains adapters or solar panels
- High efficiency - from 80% to 95%, which minimizes energy losses and reduces heating of the system, thus increasing reliability and battery life
- Soft-start function - limits the starting current and gradually increases the output voltage during start-up, preventing sudden voltage surges and protecting connected components
- Energy saving mode - automatic reduction of the switching frequency at low load, which improves the energy efficiency of the controller
Converter terminals
VOUT (Output Voltage) - regulator output, from which the stabilized output voltage is taken. In the photo, these are two pins marked as OUT and G (ground)
- GND (Ground) - the mass of the system, common for input and output, provides a reference for voltages and signals
- VIN (Input Voltage) - input supply voltage in the range from 4.2 V to 45 V. This is where we connect the input voltage, which the regulator lowers
- EN (Enable) - input enabling switching the regulator on and off. Lowering the voltage below a specified threshold causes the output to be switched off and the regulator to go into low current consumption mode (shutdown). Raising the voltage above the threshold activates the output
- PG (Power Good) - an output signal that indicates the correct operation of the regulator and the stability of the output voltage. This is an open-drain output that requires a resistor to pull up to the supply voltage
- Output voltage potentiometer - precise, 11-turn potentiometer allowing to set the output voltage in the range from 4.2 V to 15 V. Turning clockwise increases the voltage
- Low Voltage Cut-Off Threshold Potentiometer - A second 11-turn potentiometer allows you to set the low voltage cut-off threshold. This allows the controller to automatically turn off the power supply when the input voltage drops below a set level, protecting the device from damage
D30V30MASCMA step-down converter pinout.
The maximum continuous output current depends on the input voltage and thermal conditions.Technical specification of the step-down converter
- Input voltage: 4.2V to 45V
- Output voltage: 4.2 V to 15 V (adjustable)
- Output current: up to 3 A
- Efficiency: up to 90% (depending on conditions)
- Switching frequency: 700 kHz
- Quiescent current in off mode: 10 µA to 20 µA at 1 V on VIN
- Protections: reverse polarity up to 40V, overheating, overload, short circuit, low input voltage
- Dimensions: 15.2 x 25.4 x 9 mm
- Weight: 3.6 g
Kit Contents
- Step-down converter D30V30MASCMA
- Goldpin connector straight 6-pin (2.54 mm)
- Goldpin connector, angled, 6-pin (2.54 mm)
