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Tiny, efficient light load switcher

Other Parts Discussed in Thread: TPS62120, TPS54040

I need a very tiny regulator, Vin's 25 to 30V , Vout=3.3V, Iout 10 - 100 mA , preferable package like SOT-5, 6 or 8; freq 500 Khz - ??MHz.  It's not too difficult to find initial candidates, but the typical load is 10mA and I know many switcher parts are not efficient at such light loads.  Typical Vin is 19V and at 10mA => .15W is dissipated which is pushing it for a tiny LDO.  I would like to avoid that.