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2001. Sep. 8
s OUTLINE
PWM/VFM step-down DC/DC converter with Synchronous Rectifier
R1230D Series
The R1230D Series are PWM step-down DC/DC Converters with synchronous rectifier, low supply current by CMOS process.
Each of these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, protection circuits, a protection against miss operation under low voltage (UVLO), PWM/VFM alternative circuit, a chip enable circuit, and a driver transistor. A low ripple, high efficiency step-down DC/DC converter can be easily composed of this IC with only a few kinds of external components, or an inductor and capacitors. (As for R1230D001C/D types, divider resistors are also necessary.
R1230D001B Datasheet
