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RT8020PQW Datasheet(PDF) 3 Page - Richtek Technology Corporation |
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RT8020PQW Datasheet(HTML) 3 Page - Richtek Technology Corporation |
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3 / 14 page  RT8020 3 DS8020-03 August 2007 www.richtek.com Functional Pin Description Pin No. Pin Name Pin Function 1 VIN2 Power Input of Channel 2. 2 LX2 Pin for Switching of Channel 2. 3, 9, Exposed Pad (13) GND Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. 4 FB1 Feedback of Channel 1. 5, 11 NC1, NC2 No Connection or Connect to VIN. 6 EN1 Chip Enable of Channel 1 (Active High). VEN1 ≦ VIN1. 7 VIN1 Power Input of Channel 1. 8 LX1 Pin for Switching of Channel 1. 10 FB2 Feedback of Channel 2. 12 EN2 Chip Enable of Channel 2 (Active High). VEN2 ≦ VIN2. Function Block Diagram Driver Control Logic Current Limit Detector OSC and Shutdown Control Current Sense VREF FBx GND LXx PWM Comparator Slope Compensation Error Amplifier UVLO and Power Good Detector RC COMP ENx VINx RS1 RS2 |
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