Datasheet > BD81A44EFV-M

BD81A44EFV-M

更新时间： 2024-11-12 11:07:07

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
39页	1689K
描述
BD81A44EFV-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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BD81A44EFV-M 数据手册

Datasheet

4ch White LED Driver with Buck-Boost

(40 LED Maximum)

BD81A44MUV-M / BD81A44EFV-M

General Description

Key Specifications

BD81A44MUV-M/EFV-M is a white LED driver with the capability of

withstanding high input voltage (35V Max). This driver has 4ch

constant-current drivers integrated in 1-chip, where each channel

can draw up to 120mA (Max), which is also suitable for high

illumination LED drive. Furthermore, a buck-boost current mode

DC/DC controller is also integrated to achieve stable operation

during power voltage fluctuation. Light modulation (5000:1 dimming

function) is possible by PWM input.

■

Operating Input Voltage Range

Output LED Current Accuracy

DC/DC Oscillation Frequency 200 to 2200kHz

Operating Temperature Range

LED Maximum Output Current

PWM min pulse width

4.5 to 35 V

±3.0%@50mA

-40 to +125℃

120mA/ch

1.0us

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

Features

■

Integrated Buck-Boost current mode DC/DC controller

Integrated 4ch current driver for LED drive

5000:1 PWM dimming @200Hz

VQFN28SV5050

(BD81A44MUV-M)

HTSSOP-B28

(BD81A44EFV-M)

External switching frequency synchronization

Built-In protection function (UVLO, OVP, OCP, SCP)

LED abnormality detection function (Open/Short)

Integrated V_OUTdischarge function (Buck-Boost or Buck

structure limitation)

W(Typ) × D(Typ) × H(Max) W(Typ) × D(Typ) × H(Max)

5.0mm × 5.0mm ×1.0mm

9.7mm × 6.4mm × 1.0mm

■

AEC-Q100 Qualified ^{(Note 1)}

(Note 1) Grade1

Application

For Display audio, CID, Cluster, HUD

Small and Medium type LCD Panels for Automotive use.

Typical Application Circuit

VCC CIN

CREG

COUT

VREG

VDISC

OVP

VCC

BOOT

OUTH

SYNC

OUTL

RRT

DGND

COMP

RPC

CPC

BD81A44MUV-M /

BD81A44EFV-M

LED1

LED2

LED3

LED4

CSS

PWM

ISET

PGND

RISET

VREG

FAIL1

GND

FAIL2

SHDETEN

LEDEN1

LEDEN2

Figure 1. Buck-Boost Application Circuit

○Product structure：Silicon monolithic integrated circuit

○This product has no designed protection against radioactive rays

www.rohm.com

TSZ22111・15・001

TSZ02201-0T3T0C600060-1-2

2016.10.19 Rev.003

1/35

12 3 4 5 6 7...39

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与BD81A44EFV-M相关器件

型号	品牌	获取价格	描述	数据表
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，
BD81A74MUV-M	ROHM	获取价格	BD81A74MUV-M是35V高耐压的白色LED驱动器。1chip中内置4ch恒流输出，
BD81A76EFV-M	ROHM	获取价格	BD81A76EFV-M是一款35V高耐压白色LED驱动器。一个芯片中内置了6ch恒流输出
BD82000FVJ	ROHM	获取价格	Silicon Monolithic IC
BD82000FVJ_11	ROHM	获取价格	1ch High Side Switch ICs for USB Devices and Memory Cards
BD82000FVJ-E2	ROHM	获取价格	1ch High Side Switch ICs for USB Devices and Memory Cards
BD82000FVJ-LB	ROHM	获取价格	本产品是面向工业设备市场的产品，保证长期稳定供货。是适合这些用途的产品。USB端口用单路

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