Mini DC-DC Buck Step-down Converter Adjustable Power Module 3.3V/5V/9V/12V 3A
1: Using brand new original chips.
2: The maximum output current is 3A, and it runs for a long time at 2.1A with sufficient margin. After running for about 20 seconds at 3A, the chip enters overheat protection and restarts. It can work at 3A current by cooling and dissipating the heat of the chip.
3: Adopting a completely new design scheme, the circuit design does not require electrolytic capacitors and tantalum capacitors (electrolytic capacitors have a short lifespan, while tantalum capacitors pose a risk of explosion). Three large-sized solid-state ceramic capacitors (MCC) are currently used in high-end circuits.
4: Using non isolated DC synchronous rectification, the circuit conversion efficiency is very high, reaching 97.5% when converting 6.5V to 5V at 0.7A and 94% when converting 12V to 5V at 1A.
5: Adopting integrated inductors with ultra-low internal resistance to maximize conversion efficiency. Reduce heat generation, improve efficiency, and have lower heat generation than ordinary shielded inductors.
6: Ultra small size, measuring only about 18 (length) * 10 (width) * 3.8 (height) millimeters, mini in size.
7: Ultra low static current, 12V input, 5V output voltage, with LED indicator light on the board - static current less than 0.45mA. Connected to the car battery without the need for a switch, it can be connected to the cigarette lighter line or ACC power line.
8: The output is integrated with adjustable and fixed voltage, and the fixed output does not require customization. It can be directly spot welded on the board. Special voltages can be adjusted with potentiometers, making it highly versatile.
9: Output with LED light indication, convenient and intuitive indication with voltage output.
10: Equipped with an enable port, default to working mode, low level shutdown, convenient for control
11: Can be used to replace 78 series linear regulators, such as 7805 7812, etc.
12: Both input and output use 2.54mm spacing pin holes, which are the same as the 7805 pin spacing, making it easy to use and process.
Module nature: Non isolated voltage reduction module (BUCK) synchronous rectification
Input voltage: DC4.5-24V
Output voltage: Adjustable and fixed output, fixed output voltage can be selected on the back
Adjustable range: (0.8-12V)
Fixed voltage: (3.3V 5V 9V 12V)
Output current: maximum 3A (please pay attention to heat dissipation when fully loaded), actual test input 12V output within 1.5A does not require special heat dissipation treatment. Conversion efficiency: up to 97.5% (6.5 to 5V 0.7A)
Switching frequency: 500KHz
Output ripple: around 20mV (12V to 5V3A)
Working temperature: Industrial grade (-40 ℃ to+85 ℃) (the higher the ambient temperature, the lower the output power)
Output overvoltage protection: None
Full load temperature rise: 40 ℃
Static current: 0.85 milliamps
Load adjustment rate: ± 1%
Voltage regulation rate: ± 0.5%
Dynamic response speed: 5% 200uS
Output short circuit protection: Yes (please do not short circuit for a long time)
Reverse input protection: None
Enable control: Yes, high level operation, low level stop operation, high level is 2-5V, low level is around 0V. Default internal with pull-up to input positive pole.
Wiring method: Welding
Input method: Welding
Output Method: Welding/Needle Alignment
Welding hole spacing: 2.54 millimeters
1X module
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