Mini DC-DC Buck Boost Module 1.8-5.5V to 3.3V4.2V5V3A Adjustable Output Low Ripple Step-up Step-down Constant Voltage Module

Product feature:1. Offers commonly used output voltages of 3.3V, 4V, and 5V, which customers can freely adjust2. Features a high-performance circuit design that reduces power loss and ensures stable and reliable output3. Compact and lightweight, making it easy to integrate into various devices or DIY projects4. Built-in multi-level protection mechanisms ensure safe operation of the module and connected devices5. Made with high-quality materials to guarantee product quality and ensure more stable performanceProduct Specifications:Input Voltage: DC 1.8V–5.5V (2V or higher recommended)Output Voltage: 3.3V/4V/5V (adjustable via short-circuit)Maximum Operating Current: 3ASelectable Normal/Power-Saving ModeOutput Short-Circuit ProtectionBuilt-in Over-Temperature ProtectionProduct Description:Features genuine, imported chips from major brands with a maximum operating current of 3A. The actual current should be selected appropriately based on voltage drop and heat generation. In low-power scenarios, short the PS pin to enable power-saving mode and remove the LED to reduce standby power consumption. The output voltage can be set via a shorting pin, and a solder pad for a resistor is provided to allow for other voltage settings.Wiring Instructions:VIN: DC input positive terminal (1.8V–5.5V)GND: DC input negative terminal; connected to the output negative terminalOUT: DC output positive terminalPS Shorting Point: Shorting this point puts the module into power-saving modeEN: Module enable; a low level turns it off. Output is active by defaultPrecautions:1. Maximum input and output current is 3A (output does not exceed 3A in buck mode; input does not exceed 3A in boost mode). Actual current depends on the voltage drop and heat dissipation conditions2. No reverse polarity protection is provided. The module can operate at a minimum voltage of 1.8V, but output power is reduced at low voltages3. Do not use wires that are too thin; ensure the wires can handle the corresponding current4. Provide adequate protection for inductive loads to prevent excessive back-EMF from exceeding the chip’s tolerance range5. The higher the power drawn by the module, the closer the current will be to the maximum current rating. Heat generation will increase accordingly; ensure proper heat dissipation during use6. In normal mode, standby current ranges from a few mA to over ten mA depending on the output and input voltages. When the PS pins are shorted and the LED is removed, the standby current can be reduced to within 100 µA.7. Users can customize the output voltage: shorting the 3V3 pad outputs 3.3V, and similarly, shorting the 4V2 pad outputs 4.2V. Do not short multiple pads simultaneously.Package Contents:Buck-Boost Module × 1