MLX10803KDC-AAA-000-RE

IC specification MLX10803 High power LED driver Features VREF 1 8 VS/PWM 2 7 ROSC DRVGATE General 10803 3 6 GND IREF1 (SOIC8) Low cost power LED driver for external n-channel MOSFET IREF2 4 5 RSENSE switching transistor 6V to 32V DC input range Applications from mA to several Ampere LED current Possible temperature dependent regulation using external Negative Temperature Coefficient (NTC) resistor Small package allows compact module design with minimised wire runs and short connections to achieve improved EMC performance Built-in randomiser for improved EMC performance High temperature operation capable Load dump protected to 80V LED driver High energy efficiency PWM dimming via VS/PWM pin Light output has minimised dependency on supply and temperature variations LED regulation parameters set with external resistors Ordering Code Product Code Temperature Code Package Code Option Code Packing Form Code MLX10803 K DC AAA-000 RE Legend: Temperature Code: K for temperature -40c to 125c Package Code: DC for SOIC150Mil Packing Form: RE for reel Ordering example: MLX10803KDC-AAA-000-RE General Description The MLX10803 is a multi-purpose LED driver for high power LEDs designed for high current and high voltage applications. The circuit is designed for demanding automotive applications and therefore suitable in all other high intensity LED applications. Numerous adjustment possibilities allow for the design of different LED applications using only a few external components. The circuit is load dump protected for 80V load dump pulse. 3901010803 Page 1/25 Data Sheet Rev026 Jun/2012 IC specification MLX10803 High power LED driver Table of contents Features ........................................................................................................... 1 General Description ......................................................................................... 1 Table of contents ............................................................................................. 2 Block diagram .................................................................................................. 3 1. Typical application data ............................................................................ 4 1.1. LED driver applications ...................................................................... 4 1.1.1. Principle complete schematic LED driver diagram ..................... 4 1.1.2. Principle soft start up LED driver diagram .................................. 5 1.1.3. LED driver application notes ....................................................... 5 2. Application pins ......................................................................................... 7 3. Absolute maximum ratings ........................................................................ 7 4. Electrical characteristics ........................................................................... 8 5. ESD/EMI recommendations for MLX10803 ............................................ 11 6. Automotive test pulses ............................................................................ 12 6.1. Test pulse definition ......................................................................... 13 7. LED driving principle ............................................................................... 16 7.1. General ............................................................................................ 16 7.2. The principle in detail ....................................................................... 17 7.3. Switching frequency considerations and constant light output ......... 20 8. Temperature regulation ........................................................................... 21 9. Mechanical Data ..................................................................................... 22 9.1. Mechanical data of the MLX10803 package .................................... 22 10. Standard information regarding manufacturability of Melexis products with different soldering processes ....................................................................................... 23 11. History record ...................................................................................... 24 12. Disclaimer ........................................................................................... 25 3901010803 Page 2/25 Data Sheet Rev026 Jun/2012