Datasheet > BD81A24MUF-M

BD81A24MUF-M

更新时间： 2024-11-12 11:14:35

品牌	Logo	应用领域
罗姆 - ROHM		驱动控制器驱动器
页数	文件大小	规格书
46页	3011K
描述
BD81A24MUF-M是35V高耐压的白色LED驱动器。1chip中内置4ch恒电流输出，高达120mA/ch，适合高亮度LED驱动。内置对应升降压电流模式的DC/DC控制器，对于电源电压变动，可实现稳定的动作。可通过PWM输入进行调光控制（10,000:1）。

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BD81A24MUF-M 数据手册

Datasheet

4ch White LED Driver Built-in Current Driver

Buck-Boost and Boost DC/DC Converter

for Automotive

BD81A24MUF-M

General Description

Key Specifications

BD81A24MUF-M is a white LED driver with the

capability of withstanding high input voltage

(maximum 35 V). This driver has 4ch constant-current

drivers in 1-chip, where each channel can draw up to

120 mA (Max), and it is suitable for high illumination

LED drive. Furthermore, a buck-boost current mode

DC/DC converter is also built to achieve stable

operation during power voltage fluctuation. Light

◼ Operating Input Voltage Range

4.5 V to 35 V

◼ Output LED Current Accuracy

±3.0 %@50 mA

◼ DC/DC Oscillation Frequency 200 kHz to 2200 kHz

◼ Operating Temperature

-40 °C to +125 °C

120 mA/ch

10,000:1@100 Hz

1.0 µs

◼ LED Maximum Output Current

◼ LED Maximum Dimming Ratio

◼ PWM Minimum Pulse Width

modulation (10,000:1@100 Hz dimming function) is Packages

W (Typ) x D (Typ) x H (Max)

5.0 mm x 5.0 mm x 1.0 mm

possible by PWM input.

VQFN28FV5050

Features

◼ AEC-Q100 Qualified^*1

◼ 4ch Current Driver for LED Drive

◼ Buck-Boost Current Mode DC/DC Converter

◼ Control DC/DC Converter Oscillation Frequency by

External Synchronized Signal

◼ LSI Protection Function (UVLO, OVP, TSD, OCP, SCP)

◼ LED Abnormality Detection Function (Open/Short)

◼ VOUT Discharge Function (Buck-Boost Structure

Limitation)

VQFN28FV5050

BD81A24MUF-M

*1 Grade 1

Applications

◼ Automotive CID (Center Information Display) Panel

◼ Car Navigation

◼ Cluster Panel

◼ HUD (Head Up Display)

◼ Small and Medium Type LCD Panels for Automotive

Use

Typical Application Circuit

〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays

〇This product is protected by U.S. Patent No.7,235,954, No.7,541,785, No.7,944,189.

www.rohm.com

TSZ02201-0T3T0C600090-1-2

12.Feb.2021 Rev.003

TSZ22111 • 14 • 001

1/43

12 3 4 5 6 7...46

中文翻译

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与BD81A24MUF-M相关器件

型号	品牌	获取价格	描述	数据表
BD81A24MUV-M	ROHM	获取价格	4ch White LED Driver with Buck-Boost
BD81A24MUV-ME2	ROHM	获取价格	4ch White LED Driver with Buck-Boost
BD81A34EFV-ME2	ROHM	获取价格	4ch White LED Driver with Buck-Boost (32 LED Maximum)
BD81A34MUV-M	ROHM	获取价格	4ch White LED Driver with Buck-Boost (32 LED Maximum)
BD81A34MUV-ME2	ROHM	获取价格	4ch White LED Driver with Buck-Boost (32 LED Maximum)
BD81A44EFV-M	ROHM	获取价格	BD81A44EFV-M是35V高耐压的白色LED驱动器。1chip中内置4ch恒电流输出
BD81A44EFV-ME2	ROHM	获取价格	4ch White LED Driver with Buck-Boost
BD81A44MUV-M	ROHM	获取价格	4ch White LED Driver with Buck-Boost
BD81A44MUV-ME2	ROHM	获取价格	4ch White LED Driver with Buck-Boost
BD81A74EFV-M	ROHM	获取价格	BD81A74EFV-M是35V高耐压的白色LED驱动器。1chip中内置4ch恒流输出，

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