Ultra-kis méretű DC-DC lépcsős tápegység modul 3A Buck Converter Állítható 1,8V 2,5V 3,3V 5V 9V 12V
Ultra-Small Size DC-DC Step Down Power Supply Module 3A Buck Converter Adjustable 1.8V 2.5V 3.3V 5V 9V 12V
Product introduction:
1: Adopt new imported chips.
2: The output current should not be greater than 3A, and the long-term operation should be 2.1A, and the margin is sufficient.
3: With a new design, the circuit design does not require electrolytic capacitors and tantalum capacitors (electrolytic capacitors have a short lifetime and the tantalum capacitors are explosive). Two large-size solid-state ceramic capacitors (MCCs) for high-end circuits are used.
4: The new scheme adopts synchronous rectification, and the circuit conversion efficiency is very high. When the 6.5V turns 5V 0.7A, the efficiency is as high as 97.5% , and when 12V turns 5V 1A, it also reaches 94% . Unlike the peers, the efficiency is only 60-70% . . (The efficiency test removes the voltage drop across the input reverse-protection diode and fuse).
5: Adopt high current shielding inductance, ultra low internal resistance to improve conversion efficiency. Reduce heat.
6: Small size, 20 (length) * 11 (width) * 5 (height) mm.
7: Low quiescent current, quiescent current 0.85 mA. Connected to the car battery without a switch, can be connected to the cigarette lighter line, or ACC power line.
8: The output is integrated with adjustable and fixed voltage. The fixed output is not required to be customized. It can be directly soldered on the board. It is very voltage-sensitive and can be adjusted by potentiometer. It is very versatile.
9: Integrated enable port, default is working mode, low level is off, which brings convenience to control
10: Can be used to replace 78 series linear regulators, such as 7805 7812 and so on.
 
Module parameters:
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 on the back
Adjustable range (0.8-17V), fixed voltage (1.8V 2.5V 3.3V 5V 9V 12V)
Output current: Do not exceed 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: 500KHz
Output ripple: 20mV (12V to 5V3A) 20M bandwidth
Operating temperature: industrial grade (-40 ° C to 85 ° C) (the higher the ambient temperature, the lower the output power)
Output overvoltage protection: none
Full load temperature rise: 40 ° C
Quiescent current: 0.85 mA
Load adjustment rate: ±1%
Voltage regulation rate: ±0.5%
Dynamic response speed: 5% 200uS
Output short circuit protection: Yes, do not short circuit for a long time
Input reverse connection protection: none, input reverse connection protection diode
Enable control: Yes, high level operation, low level stop working, high level is 2-5V, low level is about 0V. The default internal pull-up to input positive.
Wiring method: welding
Input method: welding
Output method: welding / pin header
Welding hole spacing: 2.54 mm
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