AT9342 is a high-frequency
(1.8MHz) buck-type switch regulator with internal integration of high-side
high-voltage power MOSFET. It offers a maximum efficient output of 0.6A for a
single channel, achieving rapid loop response through current mode control.
A wide input voltage range (4.2V
to 40V) enables various applications for buck-type power conversion. The low
quiescent current is suitable for battery-powered scenarios.
Under light load
conditions, efficiency within a wide load range is achieved by reducing switch
frequency to minimize losses in both the switch and gate driver. Frequency
folding technology helps prevent uncontrolled inductor current during startup.
Thermal shutdown ensures reliable and fault-tolerant operation. The AT9342 is
packaged in an SOT23-6L package.