This application note describes how to use the LTM2881 to build a dedicated isolated 5V power supply with no external components, capable of delivering 1W of power.
The document details how to configure the LTM2881 integrated circuit as an isolated DC/DC converter providing 5V output at up to 200mA (for the -5 variant) or 3.3V output at up to 120mA (for the -3 variant). It highlights that no external components are required because decoupling capacitors are integrated into the device.
| Input Supply Voltage (LTM2881-5) | 5V DC |
|---|---|
| Input Supply Voltage (LTM2881-3) | 3.3V |
| Output Current (LTM2881-5) | 200mA |
| Output Current (LTM2881-3) | 120mA |
| Efficiency (LTM2881-5) | 62% |
| Efficiency (LTM2881-3) | 52% |
| Package Dimensions | 15mm x 11.25mm x 2.8mm |
No, no external components are required as decoupling capacitors are integrated.
The device enters zero current shutdown mode when the ON pin is low.
Yes, it includes overcurrent and overtemperature protection.