Chapter 60

ThinSOT micropower buck regulator has low output ripple

Keith Szolusha


The LT3470, a wide input voltage range, hysteretic mode, fully integrated monolithic 300mA step-down DC/DC converter, is described.


Monolithic step-down DC/DC converter



High voltage monolithic step-down converters simplify circuit design and save space by integrating the high side power switch into the device. In most cases, the switch is an n-type transistor (NMOS or NPN) with a boot-strapped drive stage, requiring an external boost diode and capacitor as well as the main catch diode, complicating the applications circuit.

The LT3470 is a 40V step-down converter with the power switch, catch diode and boost diode ...

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