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HM5309
PFM Step-Up DC-DC Controller IC
HM5309
General Description
The HM5309 is a simple, compact PFM boost controller designed for applications where extremely low cost and small size are top priorities. The output voltage is fixed at 9V with 1% accuracy from an input voltage range of +2.7V to +6.5V. Low current consumption of 32uA typical makes HM5309 ideal for battery-powered applications. The HM5309 is designed specifically to provide a simple application circuit and minimize the size and number of external components, making them ideal for consumer electronics applications. The HM5309 adopts PFM operating mode, which provides excellent efficiency over a wide-range of input voltage and load currents.