MAX20092

12开关矩阵管理器，适用于汽车照明

灵活且快捷——支持高达1.5A的矩阵/像素汽车照明

概述

说明

MAX20092 12开关矩阵管理器IC适用于汽车照明应用，包括一个12开关阵列，用于旁路单灯串或多灯串应用中的各个LED。器件具有12个独立控制的n沟道MOSFET开关，额定指标为10V，导通电阻为0.100Ω。可利用单个电流驱动为串联的所有LED供电。通过导通和关断每颗LED连接的旁路开关，即可对各个LED进行调光；也可配置为2个灯串，每个灯串中串联6个开关；以及配置为4个灯串，每串中3个开关。每个灯串使用独立的电流驱动。每个开关可连接1颗或2颗串联的LED。IC也包括内部电荷泵，为每个LED旁路开关的栅极驱动供电。开关的低导通电阻最大程度减小传导损耗和功耗。

IC通过串行外设接口(SPI)实现串行通信。MAX20092为从器件，通过SPI与作为主器件的外部微控制器(µC)通信。12个开关中的每个开关均可独立编程为旁路灯串中接在每个开关上的LED。每个开关可完全导通、完全关断，或者使用或不使用渐变模式进行调光。PWM频率可通过内部振荡器设置，或者设置为外部时钟源。IC具有LED开路保护，以及通过SPI报告LED开路和短路故障。MAX20092采用32引脚(5mm x 5mm)侧面防潮TQFN (SWTQFN)封装，带有热增强裸焊盘。

支持矩阵和像素照明的车用HB LED控制器

MAX20092: Simplified Block Diagram

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关键特性

支持汽车应用：AEC-Q100认证
灵活的配置允许在不同应用中使用相同器件
- 单、双和四灯串配置
- 单灯串配置中可串联多达12个开关
- 双灯串配置中可串联多达6个开关
- 四灯串配置中可串联多达3个开关
- 每个开关多达2颗LED
最优的PWM调光配置提供优异的调光性能
- 可编程12位PWM调光
- PWM调光状态之间渐变
- 使用内部时钟发生器或外部时钟进行PWM调光
保护特性和封装提高可靠性
- LED开路保护
- 可编程LED开路和短路门限
- LED开路和短路报告
- 热增强32引脚SWTQFN封装

应用

汽车前灯系统
汽车矩阵照明系统
汽车尾灯系统

参数规格

Part Number

Max. No. of LEDs

LED Channels

LED Configuration

I_LED per Channel
(A)

PWM Dimming Freq.
(kHz)

Dimming Control

V_IN
(V)

I_CC
(mA)

LED String Volt.
(V)

Package/Pins

Budgetary
Price

max

min

max

See Notes

MAX20092

Series-Parallel

1.5

SPI Serial

4.5

5.5

1.3

$3.08 @1k

Pricing Notes:

价格仅供参考，用于同类产品的比较。所提供报价为美元，需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题，请参考：价格与供货网站或与指定代理商联系。

设计资源

MAX20092EVSYS: MAX20092 评估板

质量和环境数据

申请可靠性报告: MAX20092
无铅封装的锡（Sn）晶须报告

其它资源

Design Solution: Improve Matrix Lighting with the Next Generation of LED Controllers and Switches ›

Smaller, Smarter, and More Powerful ICs—It’s All at electronica 2018

Managing Low and High LED Currents for Matrix and Pixel Lighting

质量与环境

型号	生产流程	工艺	样本量	不合格	FIT @ 25°C	FIT @ 55°C

备注：通过技术手段对故障率进行汇总，并映射到相关的材料部件号。故障率与被测件的数量密切相关。

质量管理体系 >
环境管理体系 >

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