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RT8269 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8269 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 12 page  RT8269 1 DS8269-02 March 2011 www.richtek.com Ordering Information Pin Configurations (TOP VIEW) 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. 3A, 24V, 400kHz Step-Down Converter Applications Distributive Power Systems Battery Charger DSL Modems Pre-regulator for Linear Regulators General Description The RT8269 is a high voltage buck converter that can support the input voltage range from 4.75V to 24V and the output current can be up to 3A. Current Mode operation provides fast transient response and eases loop stabilization. The chip provides protection functions such as cycle-by- cycle current limiting and thermal shutdown protection. In shutdown mode, the regulator draws 25 μA of supply current. The RT8269 is available in a SOP-8 (Exposed Pad) surface mount package. Features Wide Operating Input Range : 4.75V to 24V Adjustable Output Voltage Range : 0.92V to 15V Output Current up to 3A 25 μμμμμA Low Shutdown Current Power MOSFET : 0.1 Ω Ω Ω Ω Ω High Efficiency up to 95% 400kHz Fixed Switching Frequency Stable with Low ESR Output Ceramic Capacitors Thermal Shutdown Protection Cycle-By-Cycle Over Current Protection RoHS Compliant and Halogen Free Typical Application Circuit SOP-8 (Exposed Pad) SS BOOT VIN GND SW FB EN COMP 2 3 4 5 8 7 6 GND 9 VIN EN GND BOOT FB SW 7 5 2 3 1 L1 10µH 10nF 22µFx2 R1 25.8k R2 10k VOUT 3.3V/3A 10µFx2 Chip Enable VIN 4.75V to 24V RT8269 D1 B330A SS 8 CSS 0.1µF COMP CC 2.7nF RC 22k CP NC 6 4, 9 (Exposed Pad) CBOOT COUT CIN Package Type SP : SOP-8 (Exposed Pad-Option 1) RT8269 Lead Plating System G : Green (Halogen Free and Pb Free) |
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