RICOH RP401x SERIES HIGH EFFICIENCY SMALL PACKAGES STEP-UP DC/DC CONVERTERS handbook
Update: 28 September, 2023
RP401x Series are high efficiency, step-up DC/DC converter ICs packaged in compact 5pin SOT23-5， or 6pin DFN(PLP)1820-6. This IC can start up from low voltage (Typ.0.6V), therefore, it is suitable for using with single or 2 serial alkaline batteries, or a nickel-metal-hydride (NiMH) battery, or one-cell Lithium-ion (Li+) battery. This IC consists of an oscillator, a reference voltage unit with soft start, a chip enable circuit, an error amplifier, phase compensation circuits, a slope circuit, a PWM control circuit, a start-up circuit, a PWM/VFM mode control circuit, internal switches and a protection circuit. A low ripple high efficiency step-up DC/DC converter can be composed of the RP401x with only an inductor, a diode, (resisters for adjustable type), and capacitors. The output voltage of the RP401K001s is adjustable, and others are fixed internally. The output voltage range is from 1.8V to 5.5V. RP401Kxx1A/B series have a MODE pin to alternate between PWM fix and PWM/VFM automatic shift to improve the efficiency at light load. If MODE pin is set 'H', the mode is PWM fix, and when the MODE pin is set 'L', PWM/VFM automatic shift. The RP401xxx1C and D do not have MODE pin. The RP401xxx1C is PWM/PFM alternative type, and the RP401xxx1D is PWM fixed type.
Brand: RICOH
File format: PDF
Size: 576 KB
MD5 Checksum: 5A0F60E68803EAA1A2772A0EFAE28280
Publication date: 09 July, 2012
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PDF Link: RICOH RP401x SERIES HIGH EFFICIENCY SMALL PACKAGES STEP-UP DC/DC CONVERTERS handbook PDF