HLK-1D0503 5V to 3.3V 1W300mA DCDC Power Supply Module Small Size SPI Isolation Voltage Regulator IP65 Waterproof and Dustproof

DC / DC module power supply

1W DC / DC series products provide small size, high efficiency, small power, constant voltage, input isolation, unregulated, single output module power; This series of products is specifically for the integrated power system that needs to generate a set of isolation from the input power designed for the voltage application. This product is suitable for pure digital circuit occasions, general low-frequency analog circuit occasions, relay transmission circuits, data exchange circuits, etc.



Product performance

1. Features: constant voltage input, unregulated isolated single output, 1W

2. Conversion efficiency 80% (Typ)

3. Isolation is required between input and output (isolation voltage ≤ 1500VDC)

4. Output short circuit protection

5. The input power supply voltage is relatively stable (voltage variation range ± 10% Vin)

6. Operating temperature range: -40 ° C- + 85 ° C

7. Low requirements for output voltage stability

8. Small SIP packet

9. International standard pins, PCB board online installation

10. It is potted with high-quality environmentally friendly thermal and waterproof conductive adhesive, which is moisture-proof and vibration-proof, meeting IP65 waterproof and dustproof standard

11.High reliability, long life design, long continuous working time MTBF≥ 3.5 million hours (3500000Hrs)

12. Size: 11.5 * 10 * 6mm



Product application notes

1. Input Requirements: Make sure that the range of variation of the power supply output voltage does not exceed the input requirements of the DC / DC module itself.

The output power must be greater than the output power of the DC / DC module;

2. Recommended circuit 1 For occasions with general ripple and noise requirements, a filter capacitor can be connected in parallel at the input and output ends.

The connection circuit is shown in the following figure (1) and the detailed value of the filter capacitor recommended value; Output load requirement: try to avoid use without load,

When the actual power consumption of the load is less than 10% of the module's rated power or there is no load, it is recommended to connect a dummy load to the output terminal.

The dummy load (resistance) can be calculated according to 5 ~ 10% of the module's rated power, Uout = resistance value / (1W * 10%);

3. Overload protection: Under normal working conditions, the output circuit of this product has no protection against overload conditions. The easiest way is

Connect an automatic recovery fuse in series to the input or add a circuit breaker to the circuit;

4. The capacitance value of the external capacitor at the output end should not be too large, otherwise it will easily cause over-current or bad start when the module is started;

5. If the product operates below the minimum required load, it cannot be guaranteed that the product's performance meets all the performance indicators in this manual;

6. The maximum capacitive load is tested under the input voltage range and full load conditions;

7. Except for special instructions, all indicators in this manual are measured at Ta = 25 ℃, humidity <75% RH, nominal input voltage and nominal output load;