Datasheet > BD83A44MUF-M

BD83A44MUF-M

更新时间： 2024-04-09 18:58:41

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
50页	2338K
描述
This IC is a white LED driver for LCD backlight. It has MOS for boost and 4ch current drivers for

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BD83A44MUF-M 数据手册

Datasheet

4 ch Current Driver Integrated, Built-in MOS for Boost, Boost DC/DC Converter

White LED Driver for Automotive

BD83A44EFV-M BD83A44MUF-M

Key Specifications

◼ Input Operating Voltage Range:

◼ Output LED Current Absolute Accuracy:

General Description

4.5 V to 48.0 V

This IC is a white LED driver for LCD backlight.

It has MOS for boost and 4 ch current drivers for LED drive,

making it ideal for high brightness LED drive. LED pin

maximum voltage is 50 V, making it suitable for driving

medium LCD panels.

The dimming is controlled by the PWM signal and can be

set up to 20,000: 1@100 Hz. It also supports analog

dimming and can accommodate even higher brightness

ranges by combining with PWM dimming. DC/DC

converters can be controlled for boost applications, and the

input operating voltage range is 4.5 V to 48.0 V.

±5.0 %@80.1 mA

Ta = -40 °C to +125 °C

200 kHz to 2420 kHz

-40 °C to +125 °C

120 mA/ ch

◼ DC/DC Oscillation Frequency:

◼ Operating Temperature:

◼ LED Maximum Current:

◼ LED Maximum Dimming Ratio:

◼ LED1 to LED4 Pin Maximum Voltage:

20,000: 1@100 Hz

50 V

Package

HTSSOP-B24

VQFN24FV4040

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

7.8 mm x 7.6 mm x 1.0 mm

4.0 mm x 4.0 mm x 1.0 mm

Features

◼ AEC-Q100 Qualified^{(Note 1)}

◼ Functional Safety Supportive Automotive Products

◼ Built-in 4 ch Current Driver for LED Driver

◼ Built-in MOS for Boost

◼ Current Mode Boost DC/DC Converter

◼ Load Switch (M1) Control Pin

◼ PWM Dimming

(20,000: 1@100 Hz, 100 Hz to 25 kHz)

◼ Spread Spectrum Function

HTSSOP-B24

BD83A44EFV-M

VQFN24FV4040

BD83A44MUF-M

Applications

◼ Automotive CID (Center Information Display) Panel

◼ DC/DC Oscillation Frequency External Synchronization

Function

◼ Navigation

◼ Cluster Panel

◼ LSI Protect Functions (UVLO, OVP, TSD, OCP)

◼ LED Anode/Cathode Short Circuit Protection Function

◼ HUD (Head Up Display)

◼ Other Small and Medium Sized LCD Panel for

Automotive

◼ LED Open/Short Protection Function

(Note 1) Grade 1

Typical Application Circuit

VREG

VCC

CVCC

RCSH

PWM

SYNC

ADIM

COMP

LDSW

N.C.

PWM

VOUT

SYNC

ADIM

COUT

CIN

ROVP2

ROVP1

EXP-PAD

C^COMPRCOMP

PGND

RRT

PLSET

FAIL

CPLSET

RFAIL

RISET

VREG

VFAIL

ISET

Figure 1. Boost Application Circuit Diagram

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

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

www.rohm.com

TSZ22111 • 14 • 001

TSZ02201-0T2T0B200460-1-2

08.May.2023 Rev.001

1/47

12 3 4 5 6 7...50

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