Hi, would one of these do the job:
LTC1154
TC4420
sn75374
I only have a +5v supply so I gather I require a charge pump.
Supply in NZ seems to be limited........
Have you considered a simple logic level mosfet? Some of them can be driven directly by the MCU with a small gate resistor (200 ohm).
If you need more gate drive than that, you can use a push/pull gate drive with a pair of complementary transistors in a single package to keep it simple.