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US201XXL-AF5-R Datasheet(PDF) 1 Page - Unisonic Technologies |
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US201XXL-AF5-R Datasheet(HTML) 1 Page - Unisonic Technologies |
1 / 7 page UNISONIC TECHNOLOGIES CO., LTD US201/A/B/C CMOS IC www.unisonic.com.tw 1 of 7 Copyright © 2011 Unisonic Technologies Co., Ltd QW-R502-302.E HIGH-SIDE POWER SWITCHES WITH FLAG DESCRIPTION The UTC US201/A/B/C series are 80mΩ high-side power switches. There’s internal single low voltage N-Channel MOSFET which makes it an ideal for all USB applications. This MOSFET should be driven by a charge pump circuitry inside. Its switch on resistance is as low as 80mΩ which we know specially meets the drop voltage for USB applications. The flag pin can output an open-drain fault flag to next controller. There’re lots internal special ways for protecting the chip’s operation. When in hot-plug events, there’s large current which can create the upstream voltage droop to match the USB’s voltage droop requirements and soft-start for isolating the power source. As soon as the die temperature is higher than 130℃, the internal shutdown circuit will work. Only when there’s a normal input voltage in the VIN pin, the UVLO (under-voltage lockout, 1.3V/2.5V typ.) can make sure the chip is till in the off state. Because of the requirement of USB power the fault current should be ensured less than 0.6A/1.1A (UTC US201/A, single port) and 1.3A /1.5A (UTC US201B/C, dual ports). FEATURES * 80mΩ(Typ) N-Channel MOSFET * Supply Current: – Switch On : 25μA(Typ) – Switch Off : 1μA (Typ) * Load Current 500mA for US201 and 1.0A for US201A/B/C * Input Voltage from 2V ~ 5.5V * In Off-State: Output Voltage can be Higher than Input ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing US201XXL-AF5-R US201XXG-AF5-R SOT-25 Tape Reel |
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