Datasheet > ASL5108FHV

ASL5108FHV

更新时间： 2024-11-08 02:50:03

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
69页	4790K
描述
Matrix LED Controller (MLC)

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ASL5108FHV 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.65
Base Number Matches：	1

ASL5108FHV 数据手册

ASL5xxxyHz

Matrix LED Controller (MLC)

Rev. 2.1 — 5 February 2019

Product data sheet

1 General description

The ASL5xxxyHz family is a fully featured and flexible Matrix LED Controller (MLC). It

provides a cost effective design solution, specifically targeting advanced automotive

exterior lighting applications. The family consists of part numbers with different maximum

currents and different driving modes, Smart and direct PWM.

Smart PWM part numbers determine PWM dimming duty cycle from information stored

inside the MLC in the form of dimming polynomial curve coefficients. These coefficients

are programmable by the customer according to the dimming profile they would like to

see. The MLC uses these polynomial coefficients to calculate the PWM duty cycle to 12-

bit resolution. The MLC also provides the capability to increase the speed of the PWM

dimming curve dynamically or sequence several PWM dimming curves together.

It is possible to store polynomials for up to eight PWM dimming curves. By storing

these polynomial coefficients internally, it is not necessary for the microcontroller to

send updated PWM dimming information to each LED switch continuously. Instead, the

microcontroller selects the PWM curve and LED to which it must be applied. Therefore,

the PWM dimming information from the microcontroller is reduced, which reduces the

volume of data transfer from the microcontroller to the MLC.

The MLC also provides the functionality to correct for LED brightness variations. This

feature is especially useful to ensure a homogenous light output from LEDs that have

luminance variations with the same LED current.

The MLC has many diagnostic features, including:

• Direct NTC feedback for monitoring the LED temperature

• Direct identification resistor input for PCB characterization

• Single LED open/short detection and protection

• Internal IC junction temperature monitoring

• Power-on-Reset (POR) monitoring; mandatory for off-board configuration and following

safety requirements

• Power OK bit (POK) to ensure that the complete MLC is working as expected

• External components (NTC, ID resistor, charge pump capacitor) monitoring and fail

detection

• Full communication diagnosis, including flagging illegal actions

• Possibility to clear Open Circuit (OC) and Short Circuit (SC) flags and reset the internal

mosfets dynamically and without a need of a power-on-reset

All this diagnostic information is available to the microcontroller via the MLC interface. A

microcontroller controls the MLC through a high-speed serial CAN interface. Through this

interface, the microcontroller can control up to 32 MLCs, enabling control of up to 384

LEDs or segments.

The MLC has an internal 200 MHz oscillator that avoids the need of an external quartz

(reducing system cost and providing better EMC behavior) for synchronization and clock

12 3 4 5 6 7...69

中文翻译

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ASL510C801FD0LF	KEMET	获取价格	KEMET, ASL, Piezo Actuators, Multilayer
ASL510C801FP0LF	NEC	获取价格	Multilayer Piezoelectric Actuators
ASL510C801ND0LF	KEMET	获取价格	KEMET, ASL, Piezo Actuators, Multilayer
ASL510C801NP0LF	NEC	获取价格	Multilayer Piezoelectric Actuators
ASL510C801WD1-A0LF	KEMET	获取价格	KEMET, ASL, Piezo Actuators, Multilayer
ASL5115FHN	NXP	获取价格	Display Driver
ASL5115FHV	NXP	获取价格	Display Driver
ASL5115SHN	NXP	获取价格	Display Driver

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