UNISONIC TECHNOLOGIES CO., LTD US204 Preliminary CMOS IC 100mΩ, 1/1.5A HIGH-SIDE POWER SWITCHES WITH FLAG DESCRIPTION The UTC US204 series are 100mΩ high-side power switches. There are internal duel low voltage N-Channel MOSFETS which whish is ideal all USB applications. These MOSFETS is driven by a charge pump circuitry inside, these switches on resistance are as low as 100mΩ which and meet the drop voltage for USB applications. The flag pins output an open-drain fault flag to next controller. There’re lots internal special ways for protecting the chip’s operation. There are also built-in protection circnits to ensure the chips function normally. 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, 2.1V typ.) can make sure the chip is in the off state. Because of the requirement of USB power, the fault current should be ensured to be less than 1.5A for UTC US204AH/AL and 1.0A for UTC US204CH/CL. SOP-8 FEATURES * 100mΩ(Typ) N-Channel MOSFET * Supply Current: – Switch On : 60μA (Typ) – Switch Off : 1μA (Typ) * Load Current 1.5A for US204AH/AL and 1.0A for US204CH/CL * Input Voltage from 2V ~ 5.5V * In Off-State: Output Voltage can be Higher than Input RDERING INFORMATION Ordering Number Lead Free Halogen Free US204XXL-S08-R US204XXG-S08-R www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing SOP-8 Tape Reel 1 of 6 QW-R502-601.a US204 Preliminary PIN CONFIGURATION PIN DESCRIPTION CMOS IC PIN NO 1 2 3 4 PIN NAME GND VIN CTL1 CTL2 DESCRIPTION Ground Power input voltage Chip Enable turns on power switch in VOUT1. Chip Enable turns on power switch in VOUT2. 5 FLG2 VOUT2 VOUT1 Over current or over temperature status output, open-drain output, active low, in VOUT2. 6 7 8 FLG1 Over current or over temperature status output,, open-drain output, active low, in VOUT1. Power-Switch Output, in VOUT2. Power-Switch Output, in VOUT1. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-601.a US204 Preliminary CMOS IC BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-601.a US204 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING(Ta=25°С, unless otherwise specified) PARAMETER RATINGS UNIT 6.0 V Supply Voltage VCC +2 ~ +5.5 (Note 2) V -0.3~ +6.0 V CTL VCTL Input/Output Pins 0 ~ +5.5 (Note 2) V FLG V FLG 6.0 V Power Dissipation (Ta=25°С) PD 0.3 W 150 ℃ Junction Temperature TJ -20 ~ +100 (Note 2) ℃ Storage Temperature TSTG -65 ~ +150 ℃ 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. SYMBOL ELECTRICAL CHARACTERISTICS PARAMETER ENABLE INPUT CTL Threshold SYMBOL Low High CTL Input Current UNDER VOLTAGE LOCK Under-Voltage Lockout Under-Voltage Hysteresis SUPPLY CURRENT II(CTL) Supply Current Output Leakage Current CURRENT LIMIT Current Limit Short Circuit Fold-Back Current VIL VIH US204Ax US204Cx US204Ax US204Cx TEST CONDITIONS VIN=2V~5.5V, Switch OFF VIN=2V~5.5V, Switch ON VCTL=0V~5.5V MIN TYP MAX UNIT 0.8 0.01 V V µA V V 2.0 VUVLO ∆VUVLO VIN increasing VIN decreasing 2.1 0.1 ISW(ON) ISW(OFF) IO(LEAK) Switch on, VOUT=OPEN Switch off, VOUT=OPEN VCTL=0V, RLOAD=0Ω 65 0.1 0.5 90 1 1 µA µA µA 2.8 2.1 A A A A ILIMIT VOUTX=4V 1.5 1.1 ISC(FB) VOUT=0V, measured prior to thermal shutdown 2.0 1.5 1.4 1.0 100 100 400 110 110 tON(RISE) IOUT=1.3A, VIN=5V,Each Channel IOUT= 1A, VIN=5V,Each Channel 10% ~ 90% of VOUT rising mΩ mΩ µs I FLG(OFF) RFLG V FLG =5V ISINK=1mA 0.01 20 1 400 µA Ω 12 15 ms POWER SWITCH Switch ON Resistance US204Ax US204Cx Output Turn-ON Rise Time OVER CURRENT FLAG FLAG OFF Current FLAG Output Resistance FLAG Delay Time THERMAL SHUTDOWN Thermal Shutdown Protection Thermal Shutdown Hysteresis RDS(ON) tD TSD ∆TSD UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw From fault condition to FLG assertion 5 130 20 ℃ ℃ 4 of 6 QW-R502-601.a US204 Preliminary CMOS IC TEST CIRCUIT RFG VIN VIN VFLG S1 UTC US204 CI Chip Enable FLG CTL GND VOUT A IOUT VOUT CO RL IL Turn-On & Off Response, Flag Response S2 RFG VIN VIN FLG VFLG UTC US204 CI CTL GND VOUT VOUT CO IOUT A S3 RL IL Current Limit vs. Input Voltage, Inrush Current Response, Current Limit Transient Response UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-601.a US204 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT VCC 5.0V Ferrite Bead 10k 33μF 10k 4.50V 5.25V Upstream VBUS 100mA max VBUS D+ USB Controller LDO VBUS IN VIN OUT UTC US204 GND FLG1 Overcurrent VIN VOUT1 Overcurrent CTL1 VOUT2 ON CTL2 FLG2 ON/OFF + 0.01μF 33μF D- USB Port1 GND D+ D- GND 1μF 1μF GND 0.1μF VBUS GND D+ + 0.01μF 33μF D- USB Port2 GND DATA DATA (Two Pair) to USB Controller 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 6 of 6 QW-R502-601.a