UM9711 90mΩ, 1.5A High-Side Power Switches with Flag UM9711S SOT23-5 UM9711S8 SOP8 UM9711AS8 SOP8 General Description The UM9711/UM9711A is a low voltage, single N-MOSFET high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The UM9711/UM9711A is equipped with a charge pump circuitry to drive the internal MOSFET switch; the switch's low RDS(ON), 90mΩ, meets USB voltage drop requirements. The UM9711 ________ provides a FLG signal pin which is an N-Channel open drain MOSFET output. The flag output is available to indicate fault conditions to the local USB controller. The UM9711A doesn’t have such function. Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present. The maximum current is limited to typically 2.5A in dual ports in accordance with the USB power requirements, lower quiescent current as 40μA making this device ideal for portable battery-operated equipment. The UM9711 is available in SOT23-5 and SOP8 packages requiring minimum board space and smallest components while the UM9711A is available in SOP8 package. Applications Features USB Bus/Self-Powered Hubs USB Peripherals ACPI Power Distribution PC Card Hot Swap Notebook, Motherboard PCs Battery-Powered Equipment Hot-Plug Power Supplies Battery-Charger Circuits Compliant to USB Specifications Built-in N-MOSFET, Typical RDS(ON) : 90mΩ Output can be Forced Higher than Input (Off-State) Low Supply Current : 40µA Typical at Switch on State 0.1µA Typical at Switch off State Guaranteed 1.5A Continuous Load Current Wide Input Voltage Ranges : 2.5V to 5.5V Open-Drain Fault Flag Output (UM9711S, UM9711S8) Hot Plug-in Application (Soft-Start) 1.7V Typical Under-Voltage Lockout (UVLO) Current Limiting Protection Thermal Shutdown Protection Reverse Current Flow Blocking (No Body Diode) ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 1/10 UM9711 Typical Application Circuit Pull-Up Resistor(10K to 100K) Supply Voltage 5V USB Controller VIN Over-Current FLG* 1uF UM9711/ UM9711A OFF ON EN VOUT VBUS D+ D- GND 10uF 150uF GND Ferrite Beads Data *Only for UM9711S/UM9711S8. Pin Configurations Top View 4 5 1 GND 2 EN 3 5 VOUT 5D2 4 VIN 2 1 3 M: Month Code UM9711S SOT23-5 UM9711S 8 GND 1 8 VOUT VIN 2 7 VOUT VIN 3 6 VOUT EN 4 5 FLG 7 6 5 UM9711 S8 XX 1 2 3 4 XX: Week Code UM9711S8 SOP8 UM9711S8 8 GND 1 8 VOUT VIN 2 7 VOUT VIN 3 6 VOUT EN 4 5 VOUT UM9711AS8 M FLG 7 6 5 UM9711A S8 XX 1 2 3 4 XX: Week Code UM9711AS8 SOP8 ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 2/10 UM9711 Pin Description UM9711S Pin Number (SOT23-5) 1 UM9711S8 Pin Number (SOP8) 5 UM9711AS8 Pin Number (SOP8) - 2 1 Symbol ________ Function FLG Open-Drain Fault Flag Output 1 GND Ground 3 4 4 ______ EN Chip Enable (Active Low) 4 2,3 2,3 VIN Power Input Voltage 5 6,7,8 5,6,7,8 VOUT Output Voltage Ordering Information Part Number Packaging Type Marking Code UM9711S SOT23-5 5D2 UM9711S8 SOP8 UM9711AS8 Shipping Qty 3000pcs/7Inch Tape & Reel UM9711S8 2500pcs/13Inch Tape & Reel UM9711AS8 Absolute Maximum Ratings (Note 1) Symbol VIN ______ VE N ________ VFLG PD Parameter Value Unit -0.3 to +6.5 V -0.3 to +6.5 V Flag Voltage (UM9711S, UM9711S8) 6.5 V Continuous Power Dissipation (SOT23-5) 400 mW Continuous Power Dissipation (SOP8) 625 mW Supply Voltage on VIN ______ Voltages on Pin EN TA Operating Ambient Temperature -40 to +85 °C TJ Operating Junction Temperature +125 °C -40 to +150 °C +260 °C TSTG TL Storage Temperature Range Maximum Lead Temperature for Soldering 10 seconds Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 3/10 UM9711 Electrical Characteristics (VIN = 5V, CIN = COUT = 1µF, TA = 25°C, unless otherwise specified) Symbol Parameter VIN Input Voltage Range RDS(ON) Switch on Resistance VIN=5V, IOUT=1A ISW_ON ISW_OFF Switch on Supply Current Switch off Supply Current ILEAK Output Leakage Current V E N =5V, RLOAD=0Ω ______ VIH EN Threshold Logic-High Voltage ______ VIL _____ IEN EN Threshold Logic-Low Voltage ______ tON_RISE EN Input Current Output Turn-On Rise Time ILIM Current Limit ISC_FB Short Circuit Fold-Back Current (Hysteresis) Test Conditions Max Unit 5.5 V 90 110 mΩ Switch on, VOUT=Open 40 60 μA Switch off, VOUT=Open 0.1 1 μA 2.5 10 μA ______ VIN=2V to 5.5V, switch off ______ Current Ramp (<0.1A/ms) on VOUT VOUT = 0V, measured prior to thermal shutdown FLAG Off Current VFLG = 5V tD FLAG Delay Time VUVLO Under-Voltage Lockout △ VUVLO Under-Voltage Hysteresis △ TSD Thermal Shutdown Protection Thermal Shutdown Hysteresis V 0.01 V E N =0V to 5.5V 10% to 90% of VOUT rising (RLOAD=82Ω) IFLG_OFF TSD 1.7 VIN=2V to 5.5V, switch on ISINK= 1mA ________ Typ 2.5 FLAG Output Resistance ________ RFLG Min ________ FLG assertion VIN increasing (ILOAD=10mA) VIN decreasing (ILOAD=10mA) V 1.0 μA μs 400 1.6 2.5 3.2 1.0 A A 100 400 Ω 0.01 1 μA 5 12 20 ms 1.3 1.7 V 0.1 V ________ From fault condition to 0.8 140 20 ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 4/10 UM9711 Typical Operating Characteristics Supply Current vs. Input Voltage RL=open, VEN=0V, Cin=Cout=1μF Switch on Resistance vs. Input Voltage IOUT=1A, Cin=Cout=1μF Output Voltage vs. Output Current VIN=5V, Cin=Cout=1μF /EN Pin Threshold Voltage vs. Input Voltage ILOAD=100mA, Cin=Cout=1μF Turn-On Response VIN=5V, RL=82Ω, Cin=Cout=1μF(UM9711S) Turn-Off Response VIN=5V, RL=82Ω, Cin=Cout=1μF(UM9711S) ______ ______ VE N VE N 2.00V/div 2.00V/div 2.00V/div 2.00V/div VOUT VOUT 100μs/div 100μs/div ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 5/10 UM9711 Function Description Reverse Current Protection The UM9711/UM9711A prevents reverse current flow if VOUT is externally forced to a higher ______ voltage than VIN when the output is disabled (VEN > 1.7V). Soft Start for Hot Plug-In Applications In order to eliminate the upstream voltage droop caused by the large inrush current during hot-plug events, the “soft-start” feature effectively isolates the power source from extremely large capacitive loads, satisfying the USB voltage droop requirements. Fault Flag (UM9711S, UM9711S8) ________ The UM9711 provides a FLG signal pin which is an N-Channel open drain MOSFET output. This open drain output goes low when VOUT < VIN − 1V, current limit or the die temperature ________ exceeds 130°C approximately. The FLG output is capable of sinking a 10mA load to typically ________ 200mV above ground. The FLG pin requires a pull-up resistor; this resistor should be large in value to reduce energy drain. A 100kΩ pull-up resistor works well for most applications. In the ________ case of an over-current condition, FLG will be asserted only after the flag response delay time, ________ tD, has elapsed. This ensures that FLG is asserted only upon valid over-current conditions and that erroneous error reporting is eliminated. For example, false over-current conditions may occur during hot-plug events when extremely large capacitive loads are connected and causes a high transient inrush current that exceeds the ________ current limit threshold. The FLG response delay time tD is typically 12ms. Under-Voltage Lockout Under-voltage lockout (UVLO) prevents the MOSFET switch from turning on until input voltage exceeds approximately 1.7V. If input voltage drops below approximately 1.6V, UVLO turns off ________ the MOSFET switch, FLG will be asserted accordingly. Under-voltage detection functions only when the switch is enabled. Current Limiting and Short-Circuit Protection The current limit circuitry prevents damage to the MOSFET switch and the hub downstream port but can deliver load current up to the current limit threshold of typically 2.5A through the switch of UM9711/UM9711A. When a heavy load or short circuit is applied to an enabled switch, a large transient current may flow until the current limit circuitry responds. Once this current limit threshold is exceeded the device enters constant current mode until the thermal shutdown occurs or the fault is removed. Thermal Shutdown Thermal shutdown is employed to protect the device from damage if the die temperature exceeds approximately 130 . The power switch will auto-recover when the IC is cooling down. The thermal hysteresis temperature is about 20 . Supply Filter/Bypass Capacitor A 1μF low-ESR ceramic capacitor from VIN to GND, located at the device is strongly recommended to prevent the input voltage drooping during hot-plug events. However, higher capacitor values will further reduce the voltage droop on the input. Furthermore, without the bypass capacitor, an output short may cause sufficient ringing on the input (from source lead inductance) to destroy the internal control circuitry. The input transient must not exceed 6.5V of the absolute maximum supply voltage even for a short duration. ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 6/10 UM9711 Package Information UM9711S SOT23-5 Outline Drawing D b Symbol 5 E E1 4 2 3 L 1 e c 0.2 e1 A1 A End View A2 Top View Side View A A1 A2 b c D E E1 e e1 L θ DIMENSIONS MILLIMETERS Min Max 1.050 1.250 0.000 0.100 1.050 1.150 0.300 0.500 0.100 0.200 2.820 3.020 1.500 1.700 2.650 2.950 0.950REF 1.800 2.000 0.300 0.600 0° 8° INCHES Min Max 0.041 0.049 0.000 0.004 0.041 0.045 0.012 0.020 0.004 0.008 0.111 0.119 0.059 0.067 0.104 0.116 0.037REF 0.071 0.079 0.012 0.024 0° 8° Land Pattern 2.40 0.90 0.60 0.95 0.95 NOTES: 1. Compound dimension: 2.92×1.60; 2. Unit: mm; 3. General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. 5D2 M Tape and Reel Orientation ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 7/10 UM9711 UM9711S8 SOP8 Outline Drawing c Symbol E E1 L D 1 2 e Top View A A2 End View A1 b Side View A A1 A2 b c D E E1 e L θ DIMENSIONS MILLIMETERS Min Max 1.350 1.750 0.100 0.250 1.350 1.550 0.33 0.51 0.170 0.250 4.700 5.100 3.800 4.000 5.800 6.200 1.270 (BSC) 0.400 1.270 0° 8° INCHES Min Max 0.053 0.069 0.004 0.010 0.053 0.061 0.013 0.020 0.006 0.010 0.185 0.200 0.150 0.157 0.228 0.244 0.050 (BSC) 0.016 0.050 0° 8° 4.95 1.30 Land Pattern 1.27 0.50 NOTES: 1. Compound dimension: 4.90×3.90; 2. Unit: mm; 3. General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation UM9711 S8 XX ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 8/10 UM9711 UM9711AS8 SOP8 Outline Drawing c Symbol E E1 L D 1 2 e Top View A A2 End View A1 b Side View A A1 A2 b c D E E1 e L θ DIMENSIONS MILLIMETERS Min Max 1.350 1.750 0.100 0.250 1.350 1.550 0.33 0.51 0.170 0.250 4.700 5.100 3.800 4.000 5.800 6.200 1.270 (BSC) 0.400 1.270 0° 8° INCHES Min Max 0.053 0.069 0.004 0.010 0.053 0.061 0.013 0.020 0.006 0.010 0.185 0.200 0.150 0.157 0.228 0.244 0.050 (BSC) 0.016 0.050 0° 8° 4.95 1.30 Land Pattern 1.27 0.50 NOTES: 1. Compound dimension: 4.90×3.90; 2. Unit: mm; 3. General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation UM9711A S8 XX ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 9/10 UM9711 IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com ________________________________________________________________________ http://www.union-ic.com Rev.02 Jan.2015 10/10