Product introduction:

1: The maximum output current is 3A, long-term operation is 2.1A, and the margin is sufficient.

2: Adopt a new scheme design, the circuit design does not need electrolytic capacitors and tantalum capacitors

3: Improve conversion efficiency. Reduce heat generation.

4: Small size, 20 (length) * 11 (width) * 5 (height) mm.

5: Low quiescent current, quiescent current 0.85 mA. It is connected to the car battery without a switch, it can be connected to the cigarette lighter line or the ACC power line.

6: The output is integrated with adjustable and fixed voltage. The fixed output does not need to be customized. It can be spot welded directly on the board. The voltage is very useful and can be adjusted with a potentiometer. It is very versatile

7: Integrated enable port, the default is working mode, low level is closed, which brings convenience to control

Module parameters

Module nature: non-isolated step-down module (BUCK) synchronous rectification

Input voltage: DC 4.5-24V

Output voltage: integrated adjustable and fixed output, fixed output voltage can be selected on the back

Adjustable range (0.8-17V), fixed voltage (1.8V 2.5V 3.3V 5V 9V 12V)

Output current: Maximum 3A (please pay attention to heat dissipation at full load), no special heat dissipation is required for the actual test input 12V output within 1.5A.



Conversion efficiency: up to 97.5% (6.5 to 5V 0.7A)

Switching frequency: 500KHz



Output ripple: about 20mV (12V to 5V3A) 20M bandwidth

Working temperature: industrial grade (-40℃ to +85℃) (the higher the ambient temperature, the smaller the output power)


Output overvoltage protection: none

Full load temperature rise: 40℃

Quiescent current: 0.85 mA

Load regulation rate: ±1%

Voltage adjustment rate: ±0.5%

Dynamic response speed: 5% 200uS

Output short circuit protection: Yes, please do not short circuit for a long time

Input reverse connection protection: None, input reverse connection protection diode


Enable control: Yes, work at high level, stop at low level, high level is 2-5V, low level is about 0V. The default internal pull-up to the input positive.

Connection method: welding

Input method: welding

Output mode: welding/pin header





Welding hole spacing: 2.54 mm