Features • • • • • • Input Comparator with Schmitt-trigger Characteristic Input Clamping Current Capability of ±10 mA Integrated Protection Cells (EMC, ESD, RF) Dedicated to All Input Stages Shutdown by Junction-temperature Monitor Reset with Hysteresis at Low Voltage ESD Protection Acording to Human Body Model: ±2000 V (C = 100 pF, R = 1.5 kΩ) • Output Stage: – Short-circuit Protected – Load-dump Protected at 1 kΩ – Jump Start Possible Single-channel Driver IC with Thermal Monitoring Description The singel-channel driver IC includes one non-inverted and current-limited output stage with an open collector. Thermal shutdown protects the output against critical junction temperatures. The output can sink a current of 20 mA. The digital input has Schmitt-trigger function with pull-up resistors to 5 V. T6801 Figure 1. Block Diagram NC NC 1 VS 7 VO 3 4 Thermal shutdown 2 Undervoltage detection GND VS 5 NC NC VI Rev. 4761A–AUTO–11/03 Pin Configuration Figure 2. Pinning SO8 NC 1 8 NC GND 2 7 VS NC 3 6 NC VO 4 5 VI Pin Description Pin 2 Symbol Function 1 NC 2 GND Not connected 3 NC Not connected 4 VO Output Ground 5 VI Input 6 NC Not connected 7 VS Supply voltage 5 V 8 NC Not connected T6801 4761A–AUTO–11/03 T6801 Basic Circuitry The integrated circuit T6801 requires a stabilized supply voltage (VS = 5 V ±5%) to comply with its electrical characteristics. An external buffer capacitor of C = 100 nF is recommended. An integrated 14 V Zener diode between VS and ground protects the supply pin. The input stage is provided with an integrated 250 k W pull-up resistor and can be directly connected to a microcontroller. The output stage is an open collector, capable of sinking 20 mA. Recommended external components: • Pull-up resistor, R = 1 kW • Capacitor to GND, C = 470 pF, see Figure 3 Functional Description General ON state: Low level at the input stage activates the output stage. OFF state: The internal pull-up resistor provides high level to the input comparator and deactivates the output stage. A 7 V Zener diode between input pin and GND is capable of ±10 mA clamping current. Current Limitation of the Output Stages and Overtemperature Shutdown A temperature-dependent current limitation in the range of 25 to 100 mA protects the stage in case of a short circuit. Additionally, the chip temperature is monitored. For TChip > 148°C, the output is disabled and automatically enabled with a hysteresis of TChip > 5°C. Transients and Load Dump An integrated 28 V Zener diode protects the output stage against transients and loaddump (Schaffner pulses). With the help of an external 1 kW resistor, the output transistor is capable of handling the corresponding current which flows during each of these conditions. Apart from that, the output is short-circuit and overload protected. Low-voltage Detection When the supply voltage is switched on, a power-on reset pulse is generated internally which disables the output stage until a defined supply-voltage level is reached. The lowvoltage detection is provided with a hysteresis of Vhyst = 0.5 V typically. Figure 3. Application Schematic VS = 5 V VBatt Load 100 nF Microcontroller VI T6801 R 1 kΩ VO C 470 pF 3 4761A–AUTO–11/03 Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Symbol Value Unit VS 7.0 V Ambient temperature range Tamb -40 to +125 °C Storage temperature range Tstg -50 to +150 °C Tj +150 °C Symbol Value Unit RthJA 160 K/W Supply voltage Maximum junction temperature Thermal Resistance Parameters Junction ambient Electrical Characteristics VS = 5 V ±5%, Tamb = 27°C, reference point pin 2 (GND), unless otherwise specified, see Figure 1 on page 1 and Figure 3 on page 3. Parameters Test Conditions Symbol Min. VS Typ. Max. Unit 4.75 5.25 V IS IS 0.8 7 3.2 13 mA mA VTH(ON) VTH(OFF) 3.7 3.0 4.6 3.8 V V Low-voltage hysteresis Vhyst 0.55 1.05 V Temperature shutdown TChip 140 149 Thyst 5 VI 6.7 Supply, Pin 7 Supply voltage Supply current Input open Input closed to GND Low-voltage detection threshold ON OFF Temperature shutdown hysteresis °C °C Input, Pin 5 Zener-diode protection voltage II = 10 mA Zener-diode clamping current II Pull-up resistor RI Switching threshold OFF ON Hysteresis 170 250 8.5 V ±10 mA 305 kW VI VI 3.3 1.8 V V Vhyst 1.5 V Output, Pin 4 Zener-diode protection voltage IO = 10 mA VO 26.5 Integrated capacitor 5 Leakage current Saturation voltage (IO = 20 mA) 4 VSat Ilimit (470 pF, 1 kW, 20 V) td pF 2.5 ILeak Current limitation Propagation delay V 25 µA 0.7 V 100 mA 5 µs T6801 4761A–AUTO–11/03 T6801 Ordering Information Extended Type Number Package T6801-TAQ Remarks SO8 Taped and reeled Package Information Package SO8 Dimensions in mm 5.2 4.8 5.00 4.85 3.7 1.4 0.25 0.10 0.4 1.27 6.15 5.85 3.81 8 0.2 3.8 5 technical drawings according to DIN specifications 1 4 5 4761A–AUTO–11/03 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. 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