The PC8609 is a synchronous step-up converter
with 0.65μA ultra low quiescent current. It is designed
for products powered by alkaline battery, NiMH
rechargeable battery, Li-Mn battery or rechargeable
Li-Ion battery, for which high efficiency under light load
condition is critical to achieve long battery life
operation.
The PC8609 step-up converter only consumes
0.65μA quiescent current under light load condition and
can achieve up to 75% efficiency at 10μA load with
fixed output voltage version. It can also support up to
300mA output current from 3.3V to 5V conversion, and
achieve up to 93% efficiency at 200mA load.
The PC8609 also offers both down mode
andpass-through operation for different applications.In
down mode, the output voltage can still be regulated at
target value even when input voltage is higher than
output voltage. In pass-through mode, the output
voltage follows input voltage. The PC8609 exits
down mode and enters into pass-through mode when
VIN > VOUT + 0.3V.
The PC8609 supports true shutdown function when it
is disabled, which disconnects the load from the input
supply to reduce the current consumption. The
PC8609 offers both adjustable output voltage version
and fixed output voltage versions. It is available
in Green WLCSP-1.22×0.83-6B and TDFN-2×2-6AL
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