The DS lite has it's own charger, it is not compatible with the original DS (phat), dsi, 3ds or 2ds models.
Micro USB will not work with the device as it isn't the same charging port and won't fit.
Fact: The charger for the 3ds, 2ds and DSi models are the exact same,
But it's not the same charger for any DS models that released before the DSI. Which is why it isn't compatible with the DS lite or original DS.