1.5MHz, 1A Synchronous Step-Down Converter
GENERAL DESCRIPTION
The is a high-efficiency monolithic
synchronous buck regulator using a constant
frequency, current mode architecture. The device is
available in an adjustable version. Supply current
with no load is 40uA and drops to <1uA in shutdown.
The 2.5V to 6V input voltage range makes the
ideally suited for single Li-Ion battery
powered applications. 100% duty cycle provides low
dropout operation, extending battery life in portable
systems. PWM/PFM mode operation provides very
low output ripple voltage for noise sensitive
applications.
Switching frequency is internally set at 1.5MHz,
allowing the use of small surface mount inductors
and capacitors. Low output voltages are easily
supported with the 0.6V feedback reference voltage.
The is offered in a low profile (1mm) 5-pin,
thin SOT package, and is available in an adjustable
version.
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