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| MLX10402 Motor Driver IC Features and Benefits * * * * * Small package (SOIC16) Current limitation Low power consumption Thermal Overload protection Microcontroller compatible Applications * * Small DC inductive motor driver Lamp driver Ordering Information Part No. MLX10402 Temperature Suffix C Package DF (SOIC 16) Temperature Range 0C to 70C Functional Diagram Description The IC drives directly small DC inductive or active loads like electric motors, lamps, etc. There are four main driving modes. These are set by digital inputs "In1" and "In2" : VDD VCC IN1 IN2 CONTROL CIRCUIT M1 IN1 1 0 1 0 IN2 0 1 1 0 M1 1 0 0 Z M2 0 1 0 Z Driving Mode Forward Reverse Brake (Motor shorted) Off (Motor disabled) M2 The current of the output-drivers is limited for all kinds of overload- and short-circuit conditions and in the whole supply voltage- and temperature range. The outputs "M1" and "M2" need to be off-chip protected with against motor inductances by standard Si-diodes. If the temperature of the chip exceeds a certain value (changable with pin "Auto"), the temperatureoverload protection-circuit disables the outputs, preventing the chip from being overheated. In addition, this so called "temp ovl"-state is signaled with a low level at the "overtemp"-pin. AUTO TEMPERATURE PROTECTION OVERTEMP 10402 Motor Driver IC MLX10402 3901010402 Page 1 12/Oct/01 Rev. 002 MLX10402 Motor Driver IC Electrical Characteristics Following characteristics are valid at 0C to 70C Characteristics Supply voltage Vcc Supply voltage Vdd Mean motor current Motor current limit Brake current Voltage drop at the 2 output transistors together Supply current Icc Test Conditions Min 5 4.5 330 300 Limits Typ 9 5.0 Max 12 5.5 Units V V mA mA mA mA mA mA V V mA A mA A V uA Supply current Idd Inputs "In1" & "In2" Input "Auto" (Pull up) Output "overtemp" (Open DRAIN) Vcc=9V Vcc=6V Vcc=9V Vcc=6V Vcc=9V Vcc=6V Vcc=9V, Icc=300mA Vcc=6V, Icc=260mA FORW, REVERSE, BRAKE, TEMP OVL OFF mode FORW, REVERSE, BRAKE, TEMP OVL OFF mode Logic level Current sourced (if tied to GND) TEMP OK output TEMP OVL output @1mA sink 550 500 240 180 1.2 1.2 5.0 10.0 1.0 10.0 TTL, 1.4 25 HiZ 0.4 V Temperature characteristics Characteristics TEMP OVL-Protection turn on Temperature TEMP OVL-Protection turn off Temperature Conditions Min "Auto" = 1 or floating "Auto" = 0 "Auto" = 1 or floating "Auto" = 0 Limits Typ 122 155 93 105 Max Units C C C C Absolute Maximum Ratings Vcc Maximum Output Current Die Temperature Storage Temperature +16V 700mA +160C -55C to 125C MLX10402 3901010402 Page 2 12/Oct/01 Rev. 002 MLX10402 Motor Driver IC Pin-out Pin 1: Pin 2: Pin 3: Pin 4: Pin 5: Pin 6: Pin 7: Pin 8: M2 VCC N.C. GND GND N.C. VCC M1 Pin 16: Pin 15: Pin 14: Pin 13: Pin 12: Pin 11: Pin 10: Pin 9: AUTO N.C. GND (logic) OVERTEMP VDD N.C. IN1 IN2 Note: N.C. = must be "not connected". Typical application circuit VCC VDD OVERTEMP CONTROLLER IN1 IN2 CONTROL & PROTECTION C IR C U I T M1 MOTOR pu M2 AUTO Logic GND GND Revision Table No 1.0 002 Changes Conversion to Melexis lay-out standards For the latest version of this document, go to our website at: www.melexis.com Or for additional information contact Melexis Direct: Europe and Japan: Phone: +32 13 61 16 31 E-mail: sales_europe@melexis.com All other locations: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com QS9000, VDA6.1 and ISO14001 Certified MLX10402 3901010402 Page 3 12/Oct/01 Rev. 002 |
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