US201-A-B-C

UNISONIC TECHNOLOGIES CO., LTD US201/A/B/C 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). CMOS IC 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 US201XXL-AF5-R US201XXG-AF5-R Package SOT-25 Packing Tape Reel www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 7 QW-R502-302.E US201/A/B/C MARKING 3 US 4 5 2 1 G: Halogen Free L : Lead Free Logic Level Enable Pin CMOS IC Current Code PIN CONFIGURATION PIN DESCRIPTION PIN NO 1 2 3 4 5 PIN NAME CTL GND FLG VIN VOUT DESCRIPTION Enable Input pin, H: High active, L: Low active Ground Open-drain fault flag output Power input voltage Output voltage UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R502-302.E US201/A/B/C BLOCK DIAGRAM CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R502-302.E US201/A/B/C ABSOLUTE MAXIMUM RATING(Ta=25°С, unless otherwise specified) PARAMETER SYMBOL CMOS IC RATINGS UNIT 6.5 V Supply Voltage VCC +2 ~ +5.5 (Note 2) V -0.3~ +6.5 V CTL VCTL Input/Output Pins 0 ~ +5.5 (Note 2) V FLG V FLG 6.5 V Power Dissipation (Ta=25°С) PD 0.25 W 150 ℃ Junction Temperature TJ -20 ~ +100 (Note 2) ℃ Storage Temperature TSTG -65 ~ +150 ℃ Note: 1. 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. 2. The device is not guaranteed to function when it’s beyond its operating conditions. THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA RATINGS 250 UNIT ℃/W UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R502-302.E US201/A/B/C ELECTRICAL CHARACTERISTICS PARAMETER ENABLE INPUT CTL Threshold CTL Input Current UNDER VOLTAGE LOCK Under-Voltage Lockout Under-Voltage Hysteresis SUPPLY CURRENT Supply Current Output Leakage Current CURRENT LIMIT Current Limit Low High SYMBOL VIL VIH II(CTL) VUVLO ∆VUVLO ISW(ON) ISW(OFF) IO(LEAK) TEST CONDITIONS VIN=2V~5.5V, Switch OFF VIN=2V~5.5V, Switch ON VCTL=0V~5.5V VIN increasing VIN decreasing Switch on, VOUT=OPEN Switch off, VOUT=OPEN VCTL=0V, RLOAD=0Ω US201 US201A US201B US201C US201 US201A US201B US201C US201 US201A/B/C 0.6 1.1 1.3 1.5 US201/ US201A US201B/ US201C MIN CMOS IC TYP MAX UNIT 0.8 V V µA V V 45 1 10 1.1 1.9 2.1 2.4 µA µA µA A A A A A A A A mΩ mΩ µs 2.0 0.01 1.3 2.5 0.1 25 0.1 0.5 0.8 1.5 1.7 2.0 0.8 1.0 1.0 1.3 80 80 400 ILIMIT Short Circuit Fold-Back Current ISC(FB) VOUT=0V, measured prior to thermal shutdown POWER SWITCH Switch ON Resistance Output Turn-ON Rise Time OVER CURRENT FLAG FLAG OFF Current FLAG Output Resistance RDS(ON) tON(RISE) IOUT= 500mA IOUT=1.0A 10% ~ 90% of VOUT rising 110 110 I FLG(OFF) RFLG tD TSD ∆TSD V FLG =5V ISINK=1mA From fault condition to FLG assertion 2 0.01 20 10 130 20 1 400 15 µA Ω ms ℃ ℃ FLAG Delay Time THERMAL SHUTDOWN Thermal Shutdown Protection Thermal Shutdown Hysteresis UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-302.E US201/A/B/C TEST CIRCUIT RFG VIN CI Chip Enable VIN FLG S1 VFLG VOUT CMOS IC UTC US201/A/B/C CTL GND VOUT A IOUT CO RL IL Turn-On & Off Response, Flag Response RFG VIN VIN CI FLG VFLG VOUT UTC US201/A/B/C CTL VCTL GND VOUT CO RL IL UVLO at Rising & Falling S2 VIN VIN CI FLG RFG VFLG VOUT IOUT A S3 UTC US201/A/B/C CTL GND VOUT CO RL IL Current Limit vs. Input Voltage, Inrush Current Response, Current Limit Transient Response UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R502-302.E US201/A/B/C TYPICAL APPLICATION CIRCUIT Pull-Up Resistor (10K ~ 100K) Supply Voltage 5V VIN FLG RFG Flag Transient Filtering 10K 0.1µF CMOS IC USB Controller Over Current 1µF UTC US201/A/B/C CTL VOUT GND 10µF 150µF VBUS D+ DGND Data Chip Enable Ferrite Beades Note. A low-ESR 150μF aluminum electrolytic or tantalum between VOUT and GND is strongly recommended to meet the 330mV maximum droop requirement in the hub VBUS. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 7 QW-R502-302.E