MLX10801 Ver la hoja de datos (PDF) - Melexis Microelectronic Systems

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MLX10801

Power LED driver for automotive applications Power saving low side coil driver Electronic fuse

Melexis Microelectronic Systems  

IC specification MLX10801

Power LED driver for automotive applications

Power saving low side coil driver

Electronic fuse

1.1.3.1.LED driver application notes for MLX10801 in MLPD8 5x5

The MLX10801 assembled in a MLPD8 5x5 package allows to take out of the IC a higher average and a higher

peak current.

The pre calibration data of the MLX10801 in all types of packages is identical.

In order to take advantage of the bigger output current capability without changing the ICs pre trimmed parameter

set, the user can change the values of the coil and the sense resistor.

A typical LED average current of approx. 700mA can be achieved by using a coil of 220uH and a sense resistor of

0,3 Ohm.

In case of such typical high current applications, the user must provide a suitable heat sink possibility on the PCB.

Changing the pre calibrated data, which is stored in the internal EEPROM, allows to tune the IC also to other

coil and sense resistor values, the EMC performance can be influenced as well.

Please check as well out the MLX10801 application notes for different driving solutions,

which allow to drive more than one high power LED on a single MLX10801.

3901010801

Author: TFR revised: RAH/SSZ

Page 7/41

Rev 021 14/July/05

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