It is 12v DC step down Converter Module CA1253 which has Input voltage 9-25V, output voltage 5V-3.3V, efficiency is as high as 92%, the maximum output current is 3A, 24-hour work does not need to strengthen heat. This is a dual output power module for various applications using 5V and 3.3V and it is driven by DC 12V input through 2 power IC to switch 5V and 3.3V. 12V DC converter DC step-down module CA-1253 12V to 5V to 3.3V 3A current power supply board,LCD repair tool.
- Input voltage: 12V
- Output voltage: 5V and 3.3V
- Max Output current: about 3A,
- Conversion efficiency: up to 92%
- Operating frequency: 380kHz
- Protection: Output short circuit and over heat with auto-recovery
Pin Assignment for P2, P3, and P4:
- P2 is 12V input port: 12V 12V GND GND
- P3 is 12v output port：GND GND ADJ SW 12V 12V
- P4 are 5v & 3.3v output port: ADJ SW GND GND GND GND 5V 5V 3.3V 3.3V(1)
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