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The PST8901 is a 2.1MHz
constant frequency, high efficiency, slope compensated current
mode PWM boost converter. The devices integrate a low-side NMOS
switch and a high-side PMOS as synchronous rectifier for high
efficiency and as load disconnet switch. With a 950mA peak
switch current limit, the PST8901 is capable of delivering 100mA
to the load with a single AA cell, up to 250mA from a dual AA
cell, or up to 400mA from a single-cell lithium-ion battery. The
device has a 1.0V start-up voltage with operation down to 0.8V.
The PST8901 is offered in a
low profile (1mm) DFN2x2-8 package,
and is available in fixed output voltages of 3.3V and 5.0V.
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