MLX10801RLD

MLX10801RLD Datasheet

IC specification MLX10801

Part	Datasheet
MLX10801RLD	MLX10801RLD (pdf)

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IC specification MLX10801 Power LED driver for automotive applications Power saving low side coil driver Electronic fuse General • Minimum number of inexpensive external components • Auto shutdown in case of over temperature with internal or external temperature sensor • Small package allows compact module design with minimised wire runs and short connections to achieve improved EMI performance • MLX10801 is offered in 2 package options SOIC8 and MLPD8 5x5. The MLPD8 5x5 package option allows to take out a higher peak and average current than the SOIC8 package option LED driver • High energy efficiency • Light control via PWM possible • Light output has a minimized dependency on supply and temperature variations • Adjustable LED parameters are stored in an internal NV memory Coil driver • Additional use for driving coils like relays and micro valves in a power saving mode • Works with a wide range of coils Electronic fuse • Additional use as electronic fuse. • Fuse current adjust possibility VS GND TEST CALIB VS GND TEST CALIB MLX10801 M LPD8 10801 SO8 CONTR DRVOUT RSENSE DSENSE CONTR DRVOUT RSENSE DSENSE Ordering Information Part Nr MLX10801 Temperature Code R -40°C to 105°C R -40°C to 105°C Package Code DC SOIC8 LDC MLPD8 5x5 The MLX10801 is a multi-purpose LED driver for high power LEDs designed for automotive applications. A lot of adjustment possibilities allow for the design of different LED applications using only a few external components. The circuit is load dump protected for a 40V load dump pulse. As a second use, a variety of coils like relays and micro valves can be driven in a very efficient power saving mode. A third use is a simple electronic fuse, to protect circuits from overcurrent or overtemperature. Page 1/41 IC specification MLX10801 Power LED driver for automotive applications Power saving low side coil driver Electronic fuse Table of content Ordering 1 General Description 1 Table of content 2 Block diagram 4 Typical application 5 LED driver applications 5 Complete schematic LED driver diagram 5 Minimum schematic LED driver diagram 5 LED driver application notes 6 LED driver application notes for MLX10801 in MLPD8 5x5 7 Coil driver applications 8 Coil driver schematic diagram 8 Coil driver application 8 Electronic fuse 9 Electronic fuse schematic diagram 9 Electronic fuse application notes 9 Application pins 10 Absolute maximum ratings 11 Electrical characteristics 13 EE-Latch characteristics 16 ESD/EMI recommendations for 16 Automotive test 17 Test pulse definition 18 LED driving principle 21 The principle in detail 22 Coil inductance, EMI and selected parameter 23 Switching frequency considerations and constant light output....................... 25 Coil driving principle 26 The principle in detail 26 Electronic fuse principle 26 Sleep 27 Temperature 27 Load dump protection 27 The calibration 27 The internal control register 27 The Influence of the pseudo random generator to the monoflop time 29 The calibration 30 The calibration procedure 31 Calibration procedure for LED driver applications 31 Calibration procedure for coil driver 32 Calibration procedure for electronic fuse applications:.......................... 32 Addition of Ordering Information and Disclaimer Layout changes Adjustment of the parameter set of the parts to be delivered. Definition of the coil value and sense resistor, to what this parameter set will fit. vpor, isleep, vdacref, fosc respecified Added remark, that the comparator on RSENSE is debounced with typ. 1µs Added remark, that high voltage on Calib will program the IC as already shown in the timing diagram ESD respecification according to HBM Idsense, vfwdht respecified Explanations refined, example calculation adapted Typing mistakes as well as formatting errors corrected Working current changed to supply current in table electrical characteristics “Johnson counter” corrected to “pseudo random generator” Figure jitter mode corrected to true start-up behaviour and jitter “Preliminary” statement removed Melexis standard soldering information exchanged Specification for the package option MLX10801 in MLPD8 5x5 has been worked in, as well. For both versions there is now only one specification valid. Exchange of SOIC8 package drawings for better visibility Absolute maximum ratings 36V for max 2h added as condition, vdrvoutmax re- specified Page 40/41 IC specification MLX10801 Power LED driver for automotive applications Power saving low side coil driver Electronic fuse Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services. 2002 Melexis NV. All rights reserved. For the latest version of this document, go to our website at: Or for additional information contact Melexis Direct: Europe and Japan: Phone +32 13 61 16 31 E-mail: All other locations: Phone +1 603 223 2362 E-mail: QS9000, VDA6.1 and ISO14001 Certified Page 41/41

PDF Datasheet Preview

IC specification MLX10801

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

General
• Minimum number of inexpensive external components
• Auto shutdown in case of over temperature with internal or
external temperature sensor
• Small package allows compact module design with minimised
wire runs and short connections to achieve improved EMI performance
• MLX10801 is offered in 2 package options SOIC8 and MLPD8 5x5. The MLPD8 5x5 package option allows to take out a higher peak and average current than the SOIC8 package option

LED driver
• High energy efficiency
• Light control via PWM possible
• Light output has a minimized dependency on supply and
temperature variations
• Adjustable LED parameters are stored in an internal

NV memory

Coil driver
• Additional use for driving coils like relays and micro valves in a
power saving mode
• Works with a wide range of coils

Electronic fuse
• Additional use as electronic fuse.
• Fuse current adjust possibility

VS GND TEST CALIB

VS GND TEST CALIB

MLX10801 M LPD8
10801 SO8

CONTR DRVOUT RSENSE DSENSE

CONTR DRVOUT RSENSE DSENSE
Ordering Information

Part Nr

MLX10801

Temperature Code

R -40°C to 105°C R -40°C to 105°C

Package Code

DC SOIC8 LDC MLPD8 5x5

The MLX10801 is a multi-purpose LED driver for high power LEDs designed for automotive applications. A lot of adjustment possibilities allow for the design of different LED applications using only a few external components. The circuit is load dump protected for a 40V load dump pulse.

As a second use, a variety of coils like relays and micro valves can be driven in a very efficient power saving mode.

A third use is a simple electronic fuse, to protect circuits from overcurrent or overtemperature.

Page 1/41

IC specification MLX10801

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

Table of content
Ordering 1

General Description 1

Table of content 2

Block diagram 4

Typical application 5

LED driver applications 5

Complete schematic LED driver diagram 5

Minimum schematic LED driver diagram 5

LED driver application notes 6

LED driver application notes for MLX10801 in MLPD8 5x5 7

Coil driver applications 8

Coil driver schematic diagram 8

Coil driver application 8

Electronic fuse 9

Electronic fuse schematic diagram 9

Electronic fuse application notes 9

Application pins 10

Absolute maximum ratings 11

Electrical characteristics 13

EE-Latch characteristics 16

ESD/EMI recommendations for 16

Automotive test 17

Test pulse definition 18

LED driving principle 21

The principle in detail 22

Coil inductance, EMI and selected parameter 23

Switching frequency considerations and constant light output....................... 25

Coil driving principle 26

The principle in detail 26

Electronic fuse principle 26

Sleep 27

Temperature 27

Load dump protection 27

The calibration 27

The internal control register 27

The Influence of the pseudo random generator to the monoflop time 29

The calibration 30

The calibration procedure 31

Calibration procedure for LED driver applications 31

Calibration procedure for coil driver 32

Calibration procedure for electronic fuse applications:.......................... 32
Addition of Ordering Information and Disclaimer

Layout changes

Adjustment of the parameter set of the parts to be delivered. Definition of the coil
value and sense resistor, to what this parameter set will fit.
vpor, isleep, vdacref, fosc respecified

Added remark, that the comparator on RSENSE is debounced with typ. 1µs

Added remark, that high voltage on Calib will program the IC as already shown in the
timing diagram

ESD respecification according to HBM

Idsense, vfwdht respecified

Explanations refined, example calculation adapted

Typing mistakes as well as formatting errors corrected

Working current changed to supply current in table electrical characteristics
“Johnson counter” corrected to “pseudo random generator”

Figure jitter mode corrected to true start-up behaviour and jitter
“Preliminary” statement removed

Melexis standard soldering information exchanged

Specification for the package option MLX10801 in MLPD8 5x5 has been worked in,
as well. For both versions there is now only one specification valid.

Exchange of SOIC8 package drawings for better visibility

Absolute maximum ratings 36V for max 2h added as condition, vdrvoutmax re-
specified

Page 40/41

IC specification MLX10801

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

Disclaimer

Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services.
2002 Melexis NV. All rights reserved.

For the latest version of this document, go to our website at:

Or for additional information contact Melexis Direct:

Europe and Japan:

Phone +32 13 61 16 31 E-mail:

All other locations:

Phone +1 603 223 2362 E-mail:

QS9000, VDA6.1 and ISO14001 Certified

Page 41/41

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MLX10801RLD Datasheet file may be downloaded here without warranties.

Datasheet ID: MLX10801RLD 647787