Description

This Mini DC-DC Adjustable Step-Down Buck Converter is a compact and efficient solution for powering various devices. Designed with advanced technology and premium components, it offers adjustable and fixed output voltage options for versatility. With a maximum output current of 3A and ultra-low quiescent current, it’s perfect for use in automotive systems, microcontrollers, LED drivers, and other low-power applications. Its solid ceramic capacitor design and synchronous rectification technology ensure durability, high efficiency, and stable performance.

Why Choose This Step-Down Converter?

This converter is built with imported chips and features innovative circuitry that eliminates the need for electrolytic or tantalum capacitors, enhancing reliability and safety. Its high conversion efficiency, adjustable output options, and integrated enable port make it suitable for a wide range of applications. Compact in size and robust in performance, this module is an ideal replacement for traditional 78xx series linear regulators, providing superior performance and efficiency.

Key Features

Performance:

• Input Voltage: DC 4.5-24V.
• Adjustable Output: 0.8-17V or fixed at 1.8V, 2.5V, 3.3V, 5V, 9V, or 12V.
• Output Current: Maximum 3A (long-term operation at 2.1A).
• High Conversion Efficiency: Up to 97.5% (e.g., 6.5V to 5V at 0.7A).
• Switching Frequency: 500kHz for stable operation.
• Output Ripple: Approximately 20mV at 12V input and 5V/3A output (20M bandwidth).

Durability and Design: Industrial-grade operating temperature (-40°C to 85°C) and a compact size (20mm x 11mm x 5mm).
Advanced Components: High-current shielded inductors and two large solid ceramic capacitors (MCC) ensure reliable performance.
Control Features: Integrated enable port allows high/low-level input control.
Safety: Includes short-circuit protection (avoid prolonged short circuits).
Versatility: Directly replace 78xx series regulators.
Low Quiescent Current: Only 0.85mA, ideal for automotive and battery applications.

Technical Specifications

Module Type: Non-isolated step-down (BUCK) with synchronous rectification.
Input Voltage: DC 4.5-24V.
Output Voltage: Adjustable 0.8-17V or fixed at 1.8V, 2.5V, 3.3V, 5V, 9V, or 12V.
Output Current: Maximum 3A (long-term operation at 2.1A, ensure heat dissipation if fully loaded).
Efficiency: Up to 97.5%.
Switching Frequency: 500kHz.
Ripple: 20mV typical (20M bandwidth).
Operating Temperature: -40°C to 85°C (full load temperature rise: 40°C).
Protection: Short-circuit protection (do not short circuit for long durations).
Reverse Connection Protection: Not included (external diode recommended).
Enable Control: High level (2-5V) activates, low level (0V) deactivates.
Size: 20mm x 11mm x 5mm.
Wiring: Soldering connections; hole spacing: 2.54mm.