UNISONIC TECHNOLOGIES CO., LTD US201/A/B/C CMOS IC 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 US201XXL-AF5-R US201XXG-AF5-R www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Package Packing SOT-25 Tape Reel 1 of 7 QW-R502-302.I US201/A/B/C CMOS IC MARKING 4 5 Current Code: 1: 0.6A, A: 1.1A, B: 1.3A, C: 1.5A US 1 2 3 G: Halogen Free L : Lead Free Logic Level Enable Pin PIN CONFIGURATION VIN 4 VOUT 5 1 CTL 3 FLG PIN DESCRIPTION PIN NO 1 2 3 4 5 2 GND 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 BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R502-302.I US201/A/B/C CMOS IC ABSOLUTE MAXIMUM RATING(TA=25°С, unless otherwise specified) PARAMETER SYMBOL Supply Voltage RATINGS 6.5 +2 ~ +5.5 (Note 2) -0.3~ +6.5 0 ~ +5.5 (Note 2) UNIT V V V V 6.5 V 150 ℃ -20 ~ +100 (Note 2) ℃ -65 ~ +150 ℃ VCC Input/Output Pins VCTL VCTL V FLG V FLG Junction Temperature TJ Storage Temperature TSTG Notes: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 SYMBOL RATINGS UNIT Junction to Ambient PARAMETER θJA 260 ℃/W Junction to Case θJC 81 ℃/W ELECTRICAL CHARACTERISTICS PARAMETER ENABLE INPUT SYMBOL TEST CONDITIONS MIN TYP MAX UNIT CTL Input Current UNDER VOLTAGE LOCK II(CTL) VIN=2V~5.5V, Switch OFF VIN=2V~5.5V, Switch ON VCTL=0V~5.5V Under-Voltage Lockout VUVLO VIN increasing ∆VUVLO VIN decreasing 2.1 2.5 0.1 ISW(ON) ISW(OFF) IO(LEAK) Switch on, VOUT=OPEN Switch off, VOUT=OPEN VCTL=0V, RLOAD=0Ω 25 0.1 0.5 45 1 10 µA µA µA 0.8 1.5 1.7 2.0 0.8 1.0 1.0 1.3 1.1 1.9 2.1 2.4 A A A A A A A A 80 80 400 110 110 mΩ mΩ µs 0.01 20 1 400 µA Ω 10 15 ms CTL Threshold Low High Under-Voltage Hysteresis SUPPLY CURRENT Supply Current Output Leakage Current CURRENT LIMIT VIL VIH Current Limit ILIMIT Short Circuit Fold-Back Current ISC(FB) 0.8 V V µA 2.9 V 2.0 0.01 US201/ US201A US201B/ US201C US201 US201A US201B US201C US201 VOUT=0V, measured prior to US201A thermal shutdown US201B US201C 1.0 0.6 1.1 1.3 1.5 V POWER SWITCH Switch ON Resistance RDS(ON) Output Turn-ON Rise Time OVER CURRENT FLAG FLAG OFF Current FLAG Output Resistance tON(RISE) FLAG Delay Time I FLG(OFF) RFLG tD IOUT= 500mA IOUT=1.0A 10% ~ 90% of VOUT rising US201 US201A/B/C V FLG =5V ISINK=1mA From fault condition to FLG assertion 2 THERMAL SHUTDOWN UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R502-302.I US201/A/B/C CMOS IC Thermal Shutdown Protection TSD 130 ℃ Thermal Shutdown Hysteresis ∆TSD 20 ℃ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 7 QW-R502-302.I US201/A/B/C CMOS IC TEST CIRCUIT RFG VIN VIN FLG VFLG S1 UTC US201/A/B/C CI Chip Enable CTL VOUT GND A IOUT VOUT CO RL IL Fig.1 Turn-On & Off Response, Flag Response ISupply A VIN VIN CIN FLG UTC US201/A/B/C Chip Enable VOUT EN VFLG ILEAK AGE A RL GND Fig.2 Supply Current VRDS(ON) V IOUT VOUT VIN VIN CIN Chip Enable UTC US201/A/B/C COUT FLG EN GND Fig.3 On-Resistance UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-302.I US201/A/B/C CMOS IC TEST CIRCUIT RFG VIN VIN FLG VFLG UTC US201/A/B/C CI CTL VCTL GND VOUT VOUT CO RL IL Fig.4 UVLO at Rising & Falling S2 RFG VIN VIN CI FLG VFLG UTC US201/A/B/C CTL GND VOUT VOUT CO IOUT A S3 RL IL Fig.5 Current Limit vs. Input Voltage, Inrush Current Response, Current Limit Transient Response Note: Above test circuits reflected the graphs shown on “Typical Operating Characteristics” are as follows: Fig.1 Turn-On Rising & Falling Time vs. Temperature, Turn-On & Off Response, Flag Response. Fig.2 Supply Current vs. Input Voltage & Temperature, Switch Off Supply Current vs. Temperature, Turn-Off Leakage Current vs. Temperature. Fig.3 On-Resistance vs. Input Voltage & Temperature. Fig.4 EN Threshold Voltage vs. Input Voltage & Temperature, Flag Delay Time vs. Input Voltage & Temperature, UVLO Threshold vs. Temperature, UVLO at Rising & Falling. Fig.5 Current Limit vs. Input Voltage/Temperature, Short Circuit Current Response, Short Circuit Current vs. Temperature, Inrush Current Response, Soft-start Response, Ramped Load Response, Current Limit Transient Response, Thermal Shutdown Response. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R502-302.I US201/A/B/C CMOS IC TYPICAL APPLICATION CIRCUIT Pull-Up Resistor (10K ~ 100K) RFG Supply Voltage 5V 10K VIN FLG USB Controller Over Current 0.1µF UTC US201/A/B/C 1µF Chip Enable Flag Transient Filtering CTL VBUS D+ DGND VOUT GND 10µF 150µF Ferrite Beades Data 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.I