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| MLX12101 Sensor Protection IC Features and Benefits Small package (SOT-89) Low dropout voltage (typical 30mV) Large temperature range Overvoltage protection Reverse polarity protection Low supply current Applications Sensor Overvoltage Protection Sensor Reverse Polarity Protection Ordering Information Part No. MLX12101 Temperature Suffix E Package SA Option N/A Temperature Range -40C to 85C Extended Functional Diagram Description The MLX12101 serves as a protection circuit where sensible 5V IC's are supplied by long wires that can be short-circuited to the wiring harness of a car. The IC is to be connected between a 5V supply, and a 5V powered remote application. The IC is set on the remote application side, its input receiving the 5V supply through the car wiring, and its output delivering the 5V protected supply to the local application. When the input is below 5.5 Volt, the switch between 5V input and 5V output is closed and the application is powered. When the 5V input goes above 6.8 Volt (This case occurs when the supply wire is shortcircuited to battery plus), the output is shut off. When the chip input goes negative ( this is the case when the battery is reversed), a reverse polarity diode prevents the output of going negative. IN OUT BG COMP GND MLX12101 MLX12101 Sensor Protection IC Page 1 Rev 1.0 22/Feb/01 MLX12101 Sensor Protection IC MLX12101 Electrical Specifications DC Operating Parameters TA = -40 C to 135 C, VDD = 5V (unless otherwise specified) o o Parameter Symbol Test Condition Min 4.5 Typ 5.0 8 150 Max 5.5 Unit V mA s mA V mV Recommended Operating Conditions Input Voltage Output Current Output Signal Specifications Switch-Off Time (Vou <5V) Reverse Current Reverse Output Voltage Voltage drop-out, Vout-Vin General Specifiactions Overall Supply Current Swoitching Voltage Vt No Load Vin = 5V Rload Pin = 22R Vin = 4.5V Iout = 8mA Vin jump from 5V to 12V Through Vout with Vdd and Vss connected 1000 5 Vss-1 55 500 190 5.5 6.8 A mA V MLX12101 Absolute Maximum Ratings Parameter Max Operating Voltage Range Max Output Current Supply Current Operating temperature Max junction temperature Value -14 to 16 100 0.5 -40 to 150 150 Unit V mA mA C C Comment MLX12101 Sensor Protection IC Page 2 Rev 1.0 22/Feb/01 MLX12101 Sensor Protection IC Figure 2 Figure 3 MLX12101 Sensor Protection IC Page 3 Rev 1.0 22/Feb/01 MLX12101 Sensor Protection IC Figure 4 Typical Circuit Diagram The 12101 is designed for EMC protection in automotive applications. Figure 5 MLX12101 Sensor Protection IC Page 4 Rev 1.0 22/Feb/01 MLX12101 Sensor Protection IC MLX12101 Overshoot Switch-off Timing Input 5~12V 5V/div. Output 0~12V 50S/div. MLX12101 Pinout - SA (SOT-89A) Package Pin number 1 2 3 Description 5V output Ground 5V input SOT-89A - Rear View MLX12101 Sensor Protection IC Page 5 Rev 1.0 22/Feb/01 MLX12101 Sensor Protection IC Melexis Worldwide Locations For the latest version of this document, Go to our website at: www.melexis.com For additional information contact Melexis Direct: Or contact one of our qualified representatives : USA Melexis Inc. 41 Locke Road, Concord, NH 03301 Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Fax: +1 603 223 9614 United Kingdom Silicon Concepts PCB Lynchborough Road, Hampshire GU30 7SB, United Kingdom Phone: +44 1428 751 617 Fax: +44 1428 751 603 E-mail: sales_uk@melexis.com France Melexis France Tour Arago, 5 rue Bellini, 92806 Puteaux-La-Defense, France. Phone: +33 1 47 78 11 34 Fax: +33 1 47 78 06 35 E-mail: sales_france@melexis.com Italy Dimacred IRL Via Papa Giovanni XXIII no. 25, 20046 Biassono, Italy Phone: +39 039 249 4856 Fax: +39 039 491773 E-mail: sales_italy@melexis.com Japan Germany Melexis GmbH Schiess-strasse 55, 40549 Dusseldorf, Germany Phone: +49 211 5360212 Fax: +49 211 5360250 E-mail: sales_de@melexis.com Star Electronics Co. Ltd. 1-14-10 Shiba Minato-Ku, Tokyo, Japan Phone + 81 3 3452 7171 Fax + 81 3 3769 2197 E-mail: sales_japan@melexis.com Taiwan Beechwood Int'l Taiwan Co. Room 8, 17F, No. 189, Taipei, Taiwan Phone: +886 2 2739 3322 E-mail: sales_taiwan@melexis.com Fax: +886 2 2739 3090 Korea NeoS Korea Rm205 chungho plaza, 668-9, deungchon-dong, kangse-ku, seoul 157-030 Korea Phone + 82-2-3665-6527 Fax + 82-3665-6529 E-mail: sales_korea@melexis.com Disclaimer Melexis reserves the right to periodically make modifications to product specifications. The information included herein is believed to be accurate and reliable. However, Melexis assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from it's use. MLX12101 Sensor Protection IC Page 6 Rev 1.0 22/Feb/01 |
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