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RT9742 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9742 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 19 page  RT9742 ® DS9742-00 July 2015 www.richtek.com 1 © Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Simplified Application Circuit Applications USB Peripherals Notebook PCs 70m Ω Ω Ω Ω Ω/55mΩ Ω Ω Ω Ω, 3A/2A/1.5A/1A High-Side Power Switches with Flag General Description The RT9742 is a cost-effective, low-voltage, single N-MOSFET high-side Power Switch IC for USB application. Low switch-on resistance and low supply current are realized in this IC. The RT9742 integrates an over-current protection circuit, a short fold back circuit, a thermal shutdown circuit and an under-voltage lockout circuit for overall protection. Besides, a flag output is available to indicate fault conditions to the local USB controller. Furthermore, the chip also integrates an embedded delay function to prevent miss-operation from happening due to inrush-current. The RT9742 is an ideal solution for USB power supply and can support flexible applications since it is available in TSOT-23-5, TSOT-23-5 (FC) and SOT-23-3 package. Features 70m Ω Ω Ω Ω Ω/55mΩ Ω Ω Ω Ω (typ.) N-MOSFET Switch Operating Range : 2.7V to 6V Reverse Blocking Current Under Voltage Lockout Deglitched Fault Report (FLG) Thermal Protection with Fold-back Over Current Protection Short Circuit Protection Pin Configurations (TOP VIEW) SOT-23-3 VIN VOUT GND 2 3 VOUT GND VIN VOUT EN 4 23 5 TSOT-23-5 (For RT9742M Only) TSOT-23-5 / TSOT-23-5 (FC) VOUT GND VIN 4 23 5 FLG EN/EN GND VOUT RT9742 COUT VBUS D+ D- GND Data Supply Voltage 2.7V to 6V VIN Over-Current USB Controller FLG CIN Chip Enable EN/EN |
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