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RT8259PE Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8259PE Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 13 page  RT8259 1 DS8259-03 March 2011 www.richtek.com Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 1.2A, 24V, 1.4MHz Step-Down Converter General Description The RT8259 is a high voltage buck converter that can support the input voltage range from 4.5V to 24V and the output current can be up to 1.2A. Current Mode operation provides fast transient response and eases loop stabilization. The chip also provides protection functions such as cycle- by-cycle current limiting and thermal shutdown protection. The RT8259 is available in a SOT-23-6 and TSOT-23-6 packages. Features Wide Operating Input Voltage Range : 4.5V to 24V Adjustable Output Voltage Range : 0.8V to 15V 1.2A Output Current 0.3 Ω Ω Ω Ω Ω Internal Power MOSFET Switch High Efficiency up to 92% 1.4MHz Fixed Switching Frequency Stable with Low ESR Output Ceramic Capacitors Thermal Shutdown Cycle-By-Cycle Over Current Protection RoHS Compliant and Halogen Free Applications Distributed Power Systems Battery Charger Pre-Regulator for Linear Regulators WLEDDrivers Typical Application Circuit Pin Configurations (TOP VIEW) SOT-23-6/TSOT-23-6 Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. BOOT GND FB EN VIN PHASE 4 23 5 6 VIN EN GND BOOT FB PHASE 4 2 3 5 6 1 L1 4.7µH CB 10nF C2 22µF R1 62k R2 19.6k VOUT 3.3V C1 10µF Chip Enable VIN 4.5V to 24V RT8259 D1 B230A Open = Automatic Startup RT8259 Package Type E : SOT-23-6 J6 : TSOT-23-6 Lead Plating System G : Green (Halogen Free and Pb Free) |
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