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The
PST8020 is a 1.2MHz constant frequency current mode PWM
step-down converter. It is ideal for applications requiring very
high current up to 2A while still achieving over 90% efficiency during
peak load conditions. The PST8020 also can run at 100% duty
cycle for low dropout operation, extending battery life in
portable systems while light load operation provides very low
output ripple for noise sensitive applications.
The PST8020
can supply up to 2A output load
current from a 2.5V to 5.5V input voltage and the output voltage
can be regulated as low as 0.6V. The high switching frequency
minimizes the size of external components while keeping
switching losses low. The internal slope compensation setting
allows the device to operate with smaller inductor values to
optimize size and provide efficient operation.
The
PST8020 is available in adjustable (0.6V to VIN) and fixed
(1.8V) output voltage versions. The device is available in a Pb-free, 3mm x 3mm 10-lead TDFN package and is rated over the -40°C to +85°C temperature range.
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