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RT8010PQW Datasheet(PDF) 2 Page - Richtek Technology Corporation |
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RT8010PQW Datasheet(HTML) 2 Page - Richtek Technology Corporation |
2 / 15 page RT8010/A 2 DS8010/A-02 March 2007 www.richtek.com Typical Application Circuit Figure 1. Fixed Voltage Regulator Figure 2. Adjustable Voltage Regulator ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + = R2 R1 1 x V V REF OUT with R2 = 300k Ω to 60kΩ so the IR2 = 2μA to 10μA, and (R1 x C1) should be in the range between 3x10-6 and 6x10-6 for component selection. Figure 3 Layout note: 1. The distance that CIN connects to VIN is as close as possible (Under 2mm). 2. COUT should be placed near RT8010/A. Layout Guide 4.7uF 10uF VIN LX NC RT8010/A EN VOUT 2.2uH 2.5V to 5.5V VIN VOUT CIN L 6 4 3 2 5 COUT GND 1 4.7uF 10uF VIN LX RT8010/A EN FB 2.2uH 2.5V to 5.5V VIN VOUT CIN L 6 4 3 2 COUT R1 R2 C1 IR2 NC 5 GND 1 NC EN VIN FB GND LX RT8010/A_ADJ CIN must be placed between VDD and GND as closer as possible LX should be connected to Inductor by wide and short trace, keep sensitive compontents away from this trace Output capacitor must be near RT8010/A L1 COUT CIN 1 2 3 4 5 6 R1 R2 L1 NC EN VIN GND LX COUT CIN RT8010/A_FIX CIN must be placed between VDD and GND as closer as possible LX should be connected to Inductor by wide and short trace, keep sensitive compontents away from this trace Output capacitor must be near RT8010 1 2 3 4 5 6 VOUT |
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