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US223 Dataheets PDF



Part Number US223
Manufacturers UTC
Logo UTC
Description HIGH-SIDE POWER SWITCHES
Datasheet US223 DatasheetUS223 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD US223 Preliminary HIGH-SIDE POWER SWITCHES WITH FLAG CMOS IC  DESCRIPTION The UTC US223 are low voltage cost-effective high-side power switches with flag function. These devices are particularly suitable for self-powered and bus-powered USB applications. The build-in N-MOSFET’s RDS(ON) which meets the requirements of USB voltage drop is as low as 80mΩ. The UTC US223 contains a charge pump circuitry to drive the internal MOSFET switch and also incorporate such.

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UNISONIC TECHNOLOGIES CO., LTD US223 Preliminary HIGH-SIDE POWER SWITCHES WITH FLAG CMOS IC  DESCRIPTION The UTC US223 are low voltage cost-effective high-side power switches with flag function. These devices are particularly suitable for self-powered and bus-powered USB applications. The build-in N-MOSFET’s RDS(ON) which meets the requirements of USB voltage drop is as low as 80mΩ. The UTC US223 contains a charge pump circuitry to drive the internal MOSFET switch and also incorporate such protection circuits: soft-start circuit protect these devices from being damaged by limiting inrush current during plug-in; thermal shutdown circuit is used to prevent catastrophic switch failure from high-current loads. UVLO is used to ensure that the device remains off unless there is a valid input voltage present. A flag output is designed to indicate fault conditions to the local USB controller. lower quiescent current as 25μA making this device ideal for portable battery-operated equipment. The UTC US223 are applied in USB Bus/Self powered hubs, USB peripherals, NB, PCs, PC card hot swap, battery-powered equipment, hot-plug power supplies, battery-charger circuits, ACPI power distribution. 4 5 3 12 SOT-25  FEATURES * Input Voltage Varies From 3.5V to 5.5V * Built-in N-MOSFET * Output Can Be Forced Higher Than Input (Off-State) * Typical Low Supply Current: - Switch On: 25μA (TYP) - Switch Off: 0.1μA (TYP) * Open-Drain Fault Flag Output To Indicate Fault Conditions * Protection Circuits: - Soft-start( Hot plug-in application) - UVLO 1.7V (TYP.) - Current Limiting Protection - Thermal Shutdown Protection * Reverse Current Flow Blocking (No Body Diode)  ORDERING INFORMATION Ordering Number Lead Free Halogen Free US223XXL-AF5-R US223XXG-AF5-R Package SOT-25 Packing Tape Reel www.unisonic.com.tw Copyright © 2017 Unisonic Technologies Co., Ltd 1 of 7 QW-R129-022.b US223  MARKING Preliminary  PIN CONFIGURATION CMOS IC  PIN DESCRIPTION PIN NO. 1 2 3 4 5 PIN NAME VIN GND CTL FLG VOUT DESCRIPTION Power Input Voltage Ground Enable. Never let this pin floating. Open-Drain Fault Flag Output Output Voltage  BLOCK DIAGRAM UVLO CTL Bias Thermal Protection Oscillator Charge Pump Gate Control Current Limiting Output Voltage Detection Delay UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VIN VOUT FLG GND 2 of 7 QW-R129-022.b US223 Preliminary CMOS IC  ABSOLUTE MAXIMUM RATING (TA = 25°C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Enable Input Voltage VIN 6.5 V VEN -0.3 ~ +6.5 V Flag Voltage Power Dissipation (TA = 25°C) VFLG PD 6.5 V 0.4 W Junction Temperature Storage Temperature TJ TSTG 150 -65~150 °C °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.  THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA  RECOMMENDED OPERATING.


US222 US223 US5C3306


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