Datasheet > BCR431U

BCR431U

更新时间： 2024-01-03 09:48:05

品牌	Logo	应用领域
英飞凌 - INFINEON		驱动晶体管驱动器
页数	文件大小	规格书
11页	292K
描述
英飞凌的 BCR431U 是低压差线性 LED 驱动器 IC，它采用了小体积的SOT23-6 封装，并且可以在不连接外部功率晶体管的情况下，独立完成LED 恒定电流的调节和控制。该产品适用于驱动高达 37mA 的LED应用，同时该IC 的可工作电压范围为 6V 到 42V。LED 驱动电流的大小可以通过调整连接在RS 引脚的高阻抗电阻 Rset来实现。在LED 驱动电流为37mA的情况下，IC 内部集成的LED 驱动电路最大压降仅为200mV，这不仅极大地提高了整体系统的效率，还可以提供额外的电压裕度，以补偿 LED 正向电压和电源电压的容差。由于该IC内部集成了智能温度控制电路，所以当BCR431U的结温非常高时，系统会自动降低 LED 驱动电流，这样就减低了系统因为驱动电流过高而导致温升过高的风险。

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数据手册

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BCR431U 数据手册

BCR431U Low Voltage Drop LED Driver IC

Features

•

Supply voltage from 6 V to 42 V

Controls up to 36.5 mA LED current

Max. 200 mV saturation voltage at 32.8 mA

LED current precision ±10 %

Smart over temperature protection function

Advantages with respect to discrete solutions

•

Low BOM count

Lower assembly cost

Smaller form factor

Higher reliability due to less parts and soldering joints

Potential Applications

•

LED strips

LED displays and channel letters

Architectural and landscape lighting

Retail lighting

Product Validation

Qualified for industrial applications according to the relevant tests of JEDEC47/20/22

•

Product Name

Package

BCR431U

PG-SOT23-6

Description

BCR431U is a linear LED driver IC in a small PG-SOT23-6 package regulating the LED current in standalone

operation without any external power transistor. The IC supply voltage range is from 6 V up to 42 V. The LED

current level can be adjusted up to 36.5 mA connecting a high ohmic resistor Rset to pin RS. The maximum

voltage drop at the integrated LED driver stage is 200 mV at 32.8 mA improving the overall system eﬀiciency and

providing extra voltage headroom to compensate for tolerances of LED forward voltage or supply voltage. The

smart over temperature protection function reduces the LED current when junction temperature of BCR431U is

very high.

Datasheet

Please read the Important Notice and Warnings at the end of this document

1.0

www.infineon.com

2020-03-03

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