Datasheet：
| Model | DC-DC BUCK03 |
| Input Voltage | 4.5-16V |
| Output Voltage | 3.3V/5.2V |
| Output Current | 0-4A |
| Output Voltage Accuracy | < 1% |
| Line Regulation | <0.5% |
| Load Regulation | < 1% |
| Output Ripple noise | <2 0mV |
| Conversion efficiency | > 85% , Max 98% |
| Static power | < 500uA |
| Working environment | -40°C - 85°C |
| Size | 13mm*18.6mm*5mm |
Features: High conversion efficiency, PCB: 2 ounce CCL + Electroless Nickel, can support 4A output current.
Preset two VOUT, the default output is 5.2V( A pad shorted ), and the output voltage can be adjusted to 3.3V by disconnect A pad.
EN control pin, high level in normal operating conditions(default mode), low level shut down.
FB ajust pin. The VOUT is:
R1 100K
R2 22.1K
R3 31.6K
R2,R3 in parallel
VFB=0.6V
VOUT=(100K/13K + 1) X VFB
This moule is mini design, can put it in narrow place.
High conversion efficiency:
Temperature testing
condition:
input 12V, output 5.2V4A,
room temperature 30°,
the module is suspended (only use the alligator clip on the input and output ends).
After 2 hours of operation, the temperature gun is measured several times, and the temperature less then 75°C.
In practical applications, the GND pin can also be soldered to other copper foils for heat dissipation.
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