SC2041 Semtech Corporation, SC2041 Datasheet
SC2041
Related parts for SC2041
SC2041 Summary of contents
Page 1
... USB requirements for power switching and maintenance-free fault protection for self-powered & bus-powered hub applications. The SC2041 features low on-state resistance to meet the USB requirement for voltage drop and regulation. The switch is controlled by a shutdown input that is compatible with 3V and 5V logic ...
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... OUT OUT OUT d(OFF) OUT OUT OUT OUT 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 Maximum Units - 0.3) IN Internally Limited mA 130 °C/W 47 °C/W -40 to +85 -40 to +125 -65 to +150 300 2.5 Min Typ Max 2 ...
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... OUT V V rising UVLO IN V falling 10mA GND, Switch ON FLG FLG 5.0V, Switch OFF FLG FLG HYST 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 Min Typ Max 0.60 0.85 1.10 1.5 2.4 0.8 = OPEN 1 OUT = OPEN 1 OUT 2.7 2 150 20 Units µ µA ° ...
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... Error flag output: FLG is asserted active low during a fault condition (overcurrent, input undervoltage or thermal shutdown). 6, 7,8 OUT Power switch output: source of N-channel power MOSFET. Connect to load. © 2000 SEMTECH CORP. HotSwitch™ USB Power Distribution Switch With Shutdown 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 4 ...
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... Voltage vs Junction Temperature 2.5 2 125°C J 1.5 1 25° 1µF 0.5 OUT T = -40° 6.6 (V OUT OUT 0.0 4.5 5.0 5.5 2.5 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 On-State Quiescent Current vs. Input Voltage 3.0 3.5 4.0 4.5 5.0 V (V) IN Temperature vs. Input Voltage Top to bottom 3. 3. 5. 100 T (°C) ...
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... Top to bottom: 2. 125° 25°C 2. -40°C J 2.60 2.55 2.50 2.45 2.40 4.5 5.0 5.5 -50 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 Temperature vs. Input Voltage - 100 T (°C) J vs. Junction Temperature Top to bottom -40° 25° 125° ...
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... Figure 4: Current Limit and Trip Threshold With Ramped Load on Enabled Device Top Trace 5V/div. OUT Bottom Trace: I OUT Timebase: 100ms/div. = 22µ 5V, R ramping from open to 1 OUT IN OUT 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 Load , 2V/div. = 1µF OUT , 0.5A/div. = 22µF OUT 7 ...
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... Bottom Trace: I OUT Timebase: 1ms/div. = 22µ 5V OUT IN OUT Figure 8: Current Limit, 1.1 Enabled Device Top Trace 5V/div. FLG Bottom Trace: I OUT Timebase: 250µs/div 5V 1 OUT 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 , 0.2A/div. Load Applied to , 1A/div. = 1µF OUT 8 ...
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... UVLO threshold voltage (2.7V typical) is reached, the switch will turn on (if enabled) and slowly ramp up the output. The SC2041 has been designed for use in USB appli- cations such as: 1) hosts or self-powered hubs that need to current limit downstream ports and report overcurrent conditions; ...
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... Shutdown The shutdown pin (SHDN) input compatible enable/disable. Pulling this pin high shuts down the power switch and the SC2041 will draw < 1µA from the supply. Pulling this pin low will enable the device. Error Flag The error flag (FLG) output is an open drain N-channel MOSFET ...
Page 11
... J for notifying the hub controller. The USB hub can use the SC2041 to remove power from the faulty port, allowing the other ports to operate normally. Since USB is a hot insertion and removal system, USB ports are subject to electrostatic discharge (ESD). The SRDA05-4 provides ESD protection on the downstream data and power lines ...
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... Inrush current limiting is also required to prevent power supply drooping. The circuit below utilizes the SC2041 to provide ganged port power switching, inrush current limiting and overcurrent protection for maximum port protection ...
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... After startup, high powered functions may then draw up to 500mA. The circuit below utilizes the SC2041 to provide inrush current limiting and power switching for the internal function. U1 ...
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... July 18, 2000 OUTLINE DRAWING - SO-8 LAND PATTERN - SO-8 ECN00-1199 © 2000 SEMTECH CORP. HotSwitch™ USB Power Distribution Switch With Shutdown 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC2041 JEDEC REF: MS-012AA 14 ...