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RT8258GE Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8258GE Datasheet(HTML) 1 Page - Richtek Technology Corporation |
1 / 12 page RT8258 1 DS8258-02 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, 700kHz Step-Down Converter General Description The RT8258 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 RT8258 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% 700kHz 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) Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. BOOT GND FB PHASE VIN EN 4 23 5 6 SOT-23-6/TSOT-23-6 VIN EN GND BOOT FB PHASE 4 2 3 5 6 1 L 10µH CBOOT 10nF COUT 22µF R1 100k R2 32.4k VOUT 3.3V CIN 10µF Chip Enable VIN 4.5V to 24V RT8258 D1 B230A RT8258 Package Type E : SOT-23-6 J6 : TSOT-23-6 Lead Plating System G : Green (Halogen Free and Pb Free) |
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