MINI Size DC/DC Buck Adjustable Step-Down Module 4.5-24V to 1.8v, 2.5v, 5v, 9v, 12v,3A
1: The maximum output current is 3A , the long-term operation is 2.1A, and the margin is sufficient.
2: A new design is adopted , and the circuit design does not require electrolytic capacitors and tantalum capacitors
3: Improve conversion efficiency. Reduce heat.
4: Small size, 20 (length) * 11 (width) * 5 (height) mm.
5: Low quiescent current, quiescent current 0.85 mA .
There is no need to add a switch to the car battery, 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.
It is very useful for voltage and can be adjusted with a potentiometer. It is very versatile
7: Integrated enable port, the default is the working mode, the low level is closed, which brings convenience for control
Module nature: non-isolated buck 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),
the actual test input 12V output within 1.5A without special treatment heat dissipation
Conversion efficiency: up to 97.5% (6.5 to 5V 0.7A)
Switching frequency: 5 00KHz
Output ripple: 2 around 0mV (12V turn 5V3A) 20M bandwidth,
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 ℃
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, high level work, low level stop working,
high level is 2-5V, low level is about 0V.
The default is internally pulled up to the positive input.
Wiring method: welding
Input method: welding
Output method: welding/row pin
Welding hole spacing: 2.54 mm