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RN5RY401C-TL Datasheet(PDF) 2 Page - RICOH electronics devices division |
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RN5RY401C-TL Datasheet(HTML) 2 Page - RICOH electronics devices division |
2 / 13 page VFM STEP-UP DC/DC CONVERTER CONTROLLER RN5RY ××1 SERIES 1 OUTLINE The RN5RY ××1 Series are VFM Control ICs for step-up DC/DC converter with an external driver transistor featuring high output voltage accuracy and low supply current by CMOS process. Each of the RN5RY ××1 Series ICs consists of a voltage reference unit, an error amplifier, an oscillator, a VFM control circuit and feed back resis- tors. A low ripple, high efficiency step -up DC/DC converter can be composed of the RN5RY ××1 Series with only an inductor, a diode, a capacitor, and a drive transistor. Since the package for these ICs are SOT-23-5( Mini-mold)package, high density mounting of the ICs on boards is possible. • Low Supply Current ..................................................................................TYP. 3µA • Low Standby Current ..................................................................................TYP. 0.6µA • Low Temperature-Drift Coefficient of Output Voltage ...........................TYP. ±50ppm / ˚C • High Accuracy Output Voltage ...................................................................±2.5% • Low Oscillation Start-up Voltage ...............................................................MAX. 0.8V • Small Package .............................................................................................SOT-23-5(Mini-Mold) FEATURES APPLICATIONS • Power source for battery-powered instruments. • Power source for cameras, VCRs, camcorders, pagers, and other hand-held communication instruments. BLOCK DIAGRAM + – 5 3 1 2 Vref OSC Output Buffer CE EXT VOUT GND |
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