Datasheet > BD7757MWX

BD7757MWX

更新时间： 2024-11-05 11:11:51

品牌	Logo	应用领域
罗姆 - ROHM		驱动二极管驱动器
页数	文件大小	规格书
27页	1183K
描述
BD7757MWX是同步整流升压DC/DC型1ch的1.5A FLASH LED驱动器。外接应用不需要整流用二极管，有助于实现高效率以及减少贴装面积。通过一线串行控制不仅可实现FLASH电流、TORCH电流的16级调节，还可调整计时器时间、UVLO阈值等。

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BD7757MWX 数据手册

Datasheet

1.5A LED Camera Flash Driver

Synchronous Rectification Step-Up DC/DC

BD7757MWX

General Description

Key Specifications

The BD7757MWX is a 1.5A Flash LED Driver with

Synchronous rectification step up DC/DC converter that

can drive 1LED. The LED current, timer, and UVLO

threshold can be varied by using UPIC++ (Uni-Port

Interface Control ++).

 Input Voltage Range :

 LED current (FLASH):

 LED current (TORCH):

 Switching Frequency :

 Pch FET On Resistance :

 Nch FET On Resistance :

 Standby Current at shut down :

2.7V to 5.0V

1.5A (Max)

450mA (Max)

2MHz (Typ)

150mΩ (Typ)

100mΩ (Typ)

0μA (Typ)

Features

Synchronous rectification step-up DC/DC converter.

Control of registers via Uni-Port Interface Control ++

(UPIC)

Maximum current of 1.5A in Flash mode

(Low side LED Driver).

 Operating Temperature Range: -30℃ to +85℃

Package

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

3.00mm x 2.00mm x 0.60mm

USON014X3020

Lighting Mode Setup

Flash Mode…1.5A (Max)

Torch Mode…450mA (Max)

Variable LED current

Protection Circuit:

Pin Configuration

Over Current Protection Circuit (OCP)

Over Voltage Protection Circuit (OVP)

VOUT – GND Short Protection Circuit

LED Short / Open Protection Circuit

Under Voltage Lock Out Circuit (UVLO)

Thermal Shut Down Circuit (TSD)

Battery Drop Protection Circuit

Flash Timer Protection Circuit

Applications

Flash LED Driver for camera and smart phone

DSC, DVC

Video Lighting for Digital Video Applications

Amusement accessory

Figure 2. Pin Configuration

Typical Application Circuit

Figure 1. Application Circuit

○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays

.www.rohm.com

TSZ02201-00F1FC200020-1-2

03.DEC.2014 Rev.004

1/24

TSZ22111・14・001

12 3 4 5 6 7...27

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