MLX10801 Просмотр технического описания (PDF) - Melexis Microelectronic Systems
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производитель
MLX10801
Melexis Microelectronic Systems
MLX10801 Datasheet PDF : 41 Pages
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IC specification MLX10801
Power LED driver for automotive applications
Power saving low side coil driver
Electronic fuse
Table of content
Features............................................................................................................................... 1
Ordering Information............................................................................................................ 1
General Description ............................................................................................................. 1
Table of content ................................................................................................................... 2
Block diagram ...................................................................................................................... 4
1. Typical application data............................................................................................. 5
1.1.
LED driver applications .................................................................................... 5
1.1.1. Complete schematic LED driver diagram .................................................... 5
1.1.2. Minimum schematic LED driver diagram ..................................................... 5
1.1.3. LED driver application notes ........................................................................ 6
1.1.3.1. LED driver application notes for MLX10801 in MLPD8 5x5 .................. 7
1.2.
Coil driver applications ..................................................................................... 8
1.2.1. Coil driver schematic diagram ..................................................................... 8
1.2.2. Coil driver application notes......................................................................... 8
1.3.
Electronic fuse applications.............................................................................. 9
1.3.1. Electronic fuse schematic diagram .............................................................. 9
1.3.2. Electronic fuse application notes ................................................................. 9
2. Application pins ....................................................................................................... 10
3. Absolute maximum ratings ..................................................................................... 11
4. Electrical characteristics ......................................................................................... 13
5. EE-Latch characteristics ......................................................................................... 16
6. ESD/EMI recommendations for MLX10801............................................................ 16
7. Automotive test pulses............................................................................................ 17
7.1.
Test pulse definition ....................................................................................... 18
8. LED driving principle ............................................................................................... 21
8.1.
General........................................................................................................... 21
8.2.
The principle in detail ..................................................................................... 22
8.3.
Coil inductance, EMI and selected parameter set.......................................... 23
8.4.
Switching frequency considerations and constant light output....................... 25
9. Coil driving principle ................................................................................................ 26
9.1.
General........................................................................................................... 26
9.2.
The principle in detail ..................................................................................... 26
10. Electronic fuse principle .......................................................................................... 26
11. Sleep mode............................................................................................................. 27
12. Temperature shutdown........................................................................................... 27
13. Load dump protection ............................................................................................. 27
14. The calibration ........................................................................................................ 27
14.1. The internal control register ........................................................................... 27
14.2. The Influence of the pseudo random generator to the monoflop time ........... 29
14.3. The calibration interface................................................................................. 30
14.4. The calibration procedure .............................................................................. 31
14.4.1. Calibration procedure for LED driver applications ................................. 31
14.4.2. Calibration procedure for coil driver applications:.................................. 32
14.4.3. Calibration procedure for electronic fuse applications:.......................... 32
15. Data content of delivered parts ............................................................................... 33
16. Mechanical Data ..................................................................................................... 34
16.1. Mechanical data of the MLX10801 in SOIC8 ................................................. 34
16.2. Mechanical data of the MLX10801 in MLPD8 5x5 ......................................... 35
16.3. Melexis standard soldering information.......................................................... 38
17. History record.......................................................................................................... 39
3901010801
Author: TFR revised: RAH/SSZ
Page 2/41
Rev 021 14/July/05
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