MC33468
MC33468 is VARIABLE FREQUENCY MICROPOWER DC-to-DC CONVERTER manufactured by Motorola Semiconductor.
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MC33468 Variable Frequency Micropower Step-up DC-DC Converter
The MC33468 is a micropower step- up switching voltage regulator, specifically designed for handheld and pager applications, to provide a regulated output voltage using a minimum of external parts. This device Features a quiescent bias current of 3.0 µA typical. The MC33468 Features a highly accurate voltage reference, an error amplifier, an oscillator, a variable frequency modulation (VFM) controller, a drive pin (EXT) for an external transistor, and feedback resistors. The Vout pin is fixed at 2V in the IC. The output of the converter with an inductor, a diode, a capacitor,...