● Description

BD8381EFV-M is a white LED driver with the capability of withstanding high input voltage (50V MAX).

A current-mode buck-boost DC/DC controller is also integrated to achieve stable operation against voltage input and also to remove the constraint of the number of LEDs in series connection. The brightness can be controlled by either PWM or DC. The PWM brightness signal generation circuit is built into, and the control without microcomputer is also possible.

● Features

1) Input voltage range 5.0 – 30 V

2) Integrated buck-boost current-mode DC/DC controller

3) Built-in CR timer for PWM brightness

4) PWM linear brightness

5) Built-in protection functions (UVLO, OVP, TSD, OCP, SCP)

6) LED error status detection function (OPEN/ SHORT)

7) HTSSOP-B28 package

● Applications

Headlight and running (DRL) of night of daylight, etc.

BD8381EFV-M屬于集成電路（IC） > LED 驅(qū)動(dòng)器。羅姆半導(dǎo)體集團(tuán)制造生產(chǎn)的BD8381EFV-MLED 驅(qū)動(dòng)器器件屬于 LED 驅(qū)動(dòng)器電源管理集成電路 (PMIC) 系列，可通過(guò)標(biāo)稱(chēng)固定電壓的電源為負(fù)載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類(lèi)似產(chǎn)品的主要區(qū)別在于，這類(lèi)器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通?？蓪?duì)器件工作點(diǎn)進(jìn)行外部控制，可在照明應(yīng)用中用于實(shí)現(xiàn)調(diào)光功能。