E522.46 ELMOS | Alldatasheet

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Technical content

Features

Applications

Typical Application Circuit ƒ Input voltage range 3.3V to 32V (max. 42V) ƒ 8-channel I²C programmable Linear LED Driver ƒ Parallel output operation for up to 200mA ƒ 8Bit adjustable LED master current 1mA to 26.5mA ƒ 8Bit PWM based LED luminous intensity level for LED b inning calibration ƒ All LED operating adjustment data and system c onfigurations storable in E 2PROM memory ƒ Global PWM and configurable Analog Dimming ƒ Adjustable thermal management by chip-temperature ba sed derating of LED currents ƒ Diagnostic functionalities: - OV/UV input voltage monitoring - R eadable Temperature and LED Forward Voltages - O pen/Short Load with Single-Short Detection ƒ I2C interface assigned to: - L ED parameter settings in E 2PROM/Registers - Diagnosis feedback ƒ Operating temperature range -40°C to +105°C ƒ Full automotive qualification AEC-Q100 ƒ Automotive LED lighting, rear or stop Light ƒ Multi-channel panel applications ƒ Low current interior lighting ƒ Turn indicator driver ƒ Industrial LED applications or RGB drivers General Description E522.46 provides eight linear high side current sources for LED driving. Binning information for each individual LED as well as various system configurations are stored in internal E2PROM memory. The luminous intensity level of each LED is adjusted by a common analog master current and an individ- ual PWM duty cycle, considering the stored binning informa- tion. Supporting noise sensitive applications, external PWM clocks can be applied up to 24kHz repetition rate. Due to the synchronizable master-slave characteristic and adjustable error handling with a common INTB error bus the E522.46 is also designed to drive cluster applications and a higher number of LED channels. For system setup and di - agnostics an I 2C interface is used. An internal power man- agement system including a current source shut-off above TJ=+165°C guarantees an appropriate power dissipation of the system

Ordering Information

Ordering-No.: Temp Range Package E52246A84C -40°C to +105°C DFN18L5040 LED1 GND VS E522.46SDAI2C communication input VDD LED2 LED3 LED4 LED5 LED6 LED7 LED8 VBAT GND CVDDCIN SCL INTB EN RUN Microprocessor supply Optional: Multiple LED-Strings I2C communication input PWDIMDigital dimming input ADIMAnalog dimming input Interrupt request output System activate input

Note: Elmos Semiconductor AG (below Elmos) reserves the right to make changes to the product contained in this publication without notice. Elmos assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. Elmos does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to signifi cantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2015 Elmos Reproduction, in part or whole, without the prior written consent of Elmos, is prohibited. Headquarters Elmos Semiconductor AG Heinrich-Hertz-Str. 1

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