Datasheet > BD82A26MUF-M (新产品)

BD82A26MUF-M (新产品)

更新时间： 2024-11-05 11:15:51

品牌	Logo	应用领域
罗姆 - ROHM		驱动驱动器显示器
页数	文件大小	规格书
48页	1324K
描述
该IC是一款适用于LCD背光的白色LED驱动器，内置6通道的LED驱动用电流驱动器，非常适合用来驱动高亮度LED。由于LED引脚支持的最大电压为50V，因此适合用来驱动大型LCD显示器。什么是Nano Cap™?Nano Cap™是ROHM自有的一种电源技术，利用该技术，即使输出电容低至nF级也能进行稳定控制。

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Nano Cap^TM

Datasheet

6ch White LED Driver Built-in Current Driver

Boost DC/DC Converter for Automotive

BD82A26MUF-M

General Description

Key Specifications

This IC is a white LED driver for LCD backlight.

◼ Input Operating Voltage Range:

3.0 V to 48 V

It has 6ch 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 large 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 3.0 V to 48 V.

◼

Output LED Current Absolute Accuracy:

±5.0 %@80 mA

◼ DC/DC Oscillation Frequency: 200 kHz to 2420 kHz

◼ Operating Temperature:

◼ LED Maximum Current:

◼ LED Maximum Dimming Ratio: 20,000: 1@100 Hz

◼ LED1 to LED6 Pin Maximum Voltage: 50 V

-40 °C to +125 °C

150 mA/ch

Package

VQFN32FBV050

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

5.0 mm x 5.0 mm x 1.0 mm

Features

◼

Nano Cap^TMIntegrated^{(Note 1)}

AEC-Q100 Qualified^{(Note 2)}

Functional Safety Supportive Automotive Products

Current Driver for LED Drive 6ch

Current Mode Boost DC/DC Converters

Load Switch (M1) Control Pin

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

Analog + PWM Mix Dimming Available

Spread Spectrum Function

DC/DC Converter Oscillation Frequency External

Synchronization Function

Applications

◼

Automotive CID (Center Information Display) Panel

Navigation

Cluster Panel

HUD (Head Up Display)

Other Small and Medium Sized LCD Panels for

Automotive

◼

LSI Protect Functions (UVLO, OVP, TSD, OCPL)

LED Anode/Cathode Short Circuit Protection Function

LED Open/Short Protection Function

(Note 1) Nano Cap^TMis a trademark or a registered trademark of ROHM Co., Ltd. Nano Cap™ is a combination of technologies which allow stable operation

even if output capacitance is connected with the range of nF unit.

(Note 2) Grade 1

Typical Application Circuit

VCC

R_CSH

REG50

C_VCC

C_CP2

32 31 30 29 28 27 26 25

EXP-PAD

C_REG25

REG25

VDISC

OVP

REG50

R_FAIL2VREG

C_REG50

FAIL2

SHT

R_OVP1

R_OVP2

R_RT

SYNC

PWM

PLSET

COMP

GND

SYNC

PWM

EXP-PAD

VOUT

PGND

OUTL

CSL

R_PLSET2

C_PCR_PC

R_G

R_PLSET1

R_CSL

EXP-PAD

10 11 12 13 14 15 16

R_DIMSEL2

R_DIMSEL1

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, No.7,944,189 and No.10,068,511.

www.rohm.com

TSZ02201-0T2T0B200380-1-2

15.Mar.2022 Rev.003

TSZ22111 • 14 • 001

1/45

12 3 4 5 6 7...48

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