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US2076A Dataheets PDF



Part Number US2076A
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description DUAL USB HIGH-SIDE POWER SWITCH
Datasheet US2076A DatasheetUS2076A Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD US2076A Preliminary DUAL USB HIGH-SIDE POWER SWITCH „ DESCRIPTION The UTC U2076A is a dual integrated high-side power switch particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications. The UTC U2076A meets the requirements of the USB. The low on-resistance of the switch satisfies USB voltage drop requirements. Fault current is limited to typically 750mA, well below the UL 25VA safety requirement. Flag outputs are available to.

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UNISONIC TECHNOLOGIES CO., LTD US2076A Preliminary DUAL USB HIGH-SIDE POWER SWITCH „ DESCRIPTION The UTC U2076A is a dual integrated high-side power switch particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications. The UTC U2076A meets the requirements of the USB. The low on-resistance of the switch satisfies USB voltage drop requirements. Fault current is limited to typically 750mA, well below the UL 25VA safety requirement. Flag outputs are available to indicate fault conditions to the local USB controller. In addition, soft start can eliminate the momentary voltage drop which is generated on the upstream port that may occur when the switch is enabled in bus-powered applications. This device has independent functions enable and flag, and an enable input is compatible with both 3.3V and 5V logic. The UTC U2076A includes protection circuits. Thermal shutdown circuit is designed to protect the device from being damaged when high-current loads exist. UVLO (Under-voltage lockout) is used to keep the device off unless there is a valid input voltage present. The UTC U2076A is use in applications, such as USB host and self-powered hubs, bus-powered hubs, hot plug-in power supplies, and battery-charger circuits. „ FEATURES * MOSFET with Low On-Resistance: 140mΩ [email protected] per Channel * Continuous Load Current: 500mA (MIN.) per Channel * Off-State Supply Current: 1µA (TYP.) * Output can be Forced Higher than Input (Off-State) * Current Limit up to 1.25A (MAX.) * Input Supply Voltage: 3.0V ~ 5.5V * On-State Supply Current: 110µA (TYP.) * Thermal Shutdown Protection Circuit * UVLO (Undervoltage Lockout): 2.4V (TYP.) * Open-Drain Fault Flag * 1ms Turn-On (Soft-Start) and Fast Turn-Off * Compliant to USB Specifications * Available with Active-Low Enable „ ORDERING INFORMATION Ordering Number US2076AG-S08-R Package SOP-8 Packing Tape Reel CMOS IC SOP-8 www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-446.a US2076A „ PIN CONFIGURATION Preliminary CMOS IC „ PIN DESCRIPTION PIN NO. 1, 4 2, 3 6 7 5, 8 PIN NAME EN (A/B) FLG(A/B) GND IN OUT(A/B) DESCRIPTION Enable (Input): Logic-compatible enable input. Active – Low; Do Not Float. Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, UVLO, and thermal shutdown. Ground: Supply return. Supply Input: Output MOSFET source. Also supplies IC's internal circuitry. Connect to positive supply. Switch Output: Output MOSFET drain. Typically connect to switched side of load. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-446.a US2076A „ BLOCK DIAGRAM Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R502-446.a US2076A Preliminary CMOS IC „ ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Output Current Fault Flag Current IOUT Internally Limited IFLG 50 mA Fault Flag Voltage Supply Voltage VFLG VIN +6.0 +6.0 V V Output Voltage Control Input VOUT VEN +6.0 -0.3 ~ 6 V 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 „ THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA RATINGS 160 „ ELECTRICAL CHARACTERISTICS (VIN=+5V, TA=25°C, unless otherwise specified.) UNIT V °C UNIT °C/W PARAMETER Supply Current (Note) Enable Input Threshold Enable Input Current Enable Input Capacitance Switch Resistance Output Turn-On Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Short Circuit Current Limit Overtemperature Shutdown Threshold Error Flag Output Resistance Error Flag Off Current UVLO Threshold SYMBOL TEST CONDITIONS IS(OFF) switch off, OUT = open IS(ON) switch on, OUT = open VIH low to high transition VIL high to low transition IEN VEN = VOH(min) = 2.4V VEN = VOL(max) = 0.8V RON VIN = 5V VIN = 3V tON(DLY) RL = 10Ω each output tRISE RL = 10Ω each output tOFF(DLY) RL = 10Ω each output tOFF RL = 10Ω each output IO(LEAK) each output ISHORT each output OTThreshold TJ TJ increasing decreasing VIN = 5V, IL=10mA VIN = 3.3V, IL =10mA VFLAG = 5V VUVLO VIN = increasing VIN = decreasing MIN TYP MAX UNIT 25 μA 110 μA 2.4 2.5 V 1.0 2.2 V 0.01 1 μA 0.01 1 μA 1 pF 100 mΩ 140 mΩ 1 ms 0.5 ms 1 20 μs 1 20 μs 10 μA 0.5 0.75 1.25 A 135 °C 125 °C 10 Ω 15 Ω 0.01 1 μA 2.5 V 2.3 V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R502-446.a US2076A Preliminary CMOS IC „ FUNCTIONAL DESCRIPTION The UTC US2076A is dual high-side switch with active-low enable inputs. Fault conditions turn off or inhibit turn-on one or both of the output transistors, controlling by the type of fault, and the FLG pin is pu.


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