US3075

UNISONIC TECHNOLOGIES CO., LTD US3075-US3375 POWER DISTRIBUTION SWITCH DESCRIPTION The UTC US3075-US3375 is a power distribution switch. It particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications. The RDS(ON) of the MOSFET switch is as low as 100mΩ. OC is open-drain output report over-current or over-temperature event which has deglitch typical 9ms timeout period typically 9ms. The UTC US3075-US3375 incorporates protection circuits including current limiting circuit with foldback function, thermal shutdown circuit designed to prevent catastrophic switch failure due to increasing power dissipation when continuous heavy loads or short circuit occurs. Besides, a built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. The UTC US3075-US3375 is applied in high-side power protection switch, USB power management, USB host and self-powered bubs, USB bus-powered hubs, hot plug-in power supplies, battery-charger circuits. CMOS IC SOP-8 FEATURES * Operating on The Range of 2.7V to 5.5V * High-Side MOSFET with 100mΩ RDS(ON) * Quiescent Supply Current: 65μA * Available With 4 Versions of Current Limits with Foldback * Rise Time: 400μS (TYP.) * UVLO (Under Voltage Lockout) * Output Shutdown Pull-low Resister * Shutdown Supply Current: 1μA (MAX.) * Logic Level Enable Pin, Available with Active-High or Active-Low Version * Reverse Current is Not Generated when in Power Off State * Deglitched Open-Drain Over-Current Flag Output ( OC ) ORDERING INFORMATION Ordering Number Lead Free US3075XL-S08-R US3175XL-S08-R US3275XL-S08-R US3375XL-S08-R Halogen Free US3075XG-S08-R US3175XG-S08-R US3275XG-S08-R US3375XG-S08-R Package SOP-8 SOP-8 SOP-8 SOP-8 Packing Tape Reel Tape Reel Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 10 QW-R502-423.C US3075-US3375 PIN CONFIGURATION GND 1 IN 2 IN 3 EN(EN) 4 8 OUT 7 OUT 6 OUT 5 OC CMOS IC PIN DESCRIPTION PIN NO 1 2,3 4 5 6,7,8 PIN NAME DESCRIPTION GND Ground Input Supply: Output MOSFET Drain, which also supplies IC's internal circuitry. IN Connect to positive supply. Enable: Logic level enable input. Make sure EN pin never floating. EN( EN ) OC OUT Over-Current: Open-Drain OC output. Switch Output: Output MOSFET Source of switch. Typically connect to switched side of load. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R502-423.C US3075-US3375 BLOCK DIAGRAM CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 10 QW-R502-423.C US3075-US3375 ABSOLUTE MAXIMUM RATING CMOS IC PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN 6 V Output Voltage VOUT 6 V Output Current IOUT Internally Limited A Enable Input VEN -0.3 ~ 6 V Storage Temperature TSTG -65~ +150 °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. OPERATING RATINGS PARAMETER Supply Voltage Ambient Operating Temperature SYMBOL VIN TOPR RATINGS +3 ~ +5.5 -40~ +85 UNIT V °C ELECTRICAL CHARACTERISTICS (VIN=5V, CIN=1µF, COUT=1µF, RL=10Ω,TA=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Input Voltage VIN US3375, IOUT =1.5A US3275, IOUT=1A Output MOS RDS(ON) US3175, IOUT=0.5A US3075, IOUT=0.3A Supply Current IIN Output Turn-on Rising Time RL=10Ω, 90% Settling US3075 US3175 Current Limit Threshold ITHD(LIMIT) VOUT=4V US3275 US3375 US3075 VOUT=0V, US3175 Short-Circuit Current ISC 2.7V