Datasheet > BD9423EFV-XX

BD9423EFV-XX

更新时间： 2024-12-02 01:17:23

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
61页	2745K
描述
6ch boost LED driver which constant setting can be shared by I2C control

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BD9423EFV-XX 数据手册

Datasheet

LED Drivers for LCD Backlights

6ch boost LED driver which constant setting

can be shared by I2C control

BD9423EFV

1.1 General Description

Key Specifications

BD9423EFV is a high efficiency driver for white LEDs

and designed for large LCD panel. This IC is built-in high

current drive and high responsibility type 6ch LED

drivers and 1ch boost DCDC converter. BD9423EFV has

some protect function against fault conditions, such as

the over-voltage protection (OVP), LED OPEN and

SHORT protection, the over current limit protection of

DCDC (OCP). Therefore BD9423EFV is available for the

fail-safe design over a wide range output voltage.

Moreover the functions and the detection voltage can be

controlled by the I2C. This enables for the constant

setting of external parts to be shared by I2C control,

nevertheless the different usage condition.

 LED drivers Max curret

 Constant current accuracy

 Current analog (linear) dimming by ADIM pin

400mA per channel

±1.8% (IC only)

 Several protection functions

DCDC part

: OCP/OVP/UVLO

LED driver part :OPEN,SHORT detection

 SHORT detection voltage is set by LSP pin

 Error detection output by FAIL pin

 Master/Slave mode inside

1.2 Package

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

13.60mm x 7.80mm x 1.00mm

0.65mm

HTSSOP-B40:

Pin Pitch:

Features

 Operating power supply voltage range:9.0V to 35.0V

 Oscillator frequency:

 Operating Current:

200kHz (RT=100kΩ)

9mA (typ.)

 Operating temperature range:

-40°C to +85°C

Applications

 TV, Computer Display, Notebook, LCD Backlighting

Figure 1. HTSSOP-B40

Typical Application Circuit

Figure 2. Typical application circuit

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

.www.rohm.com

TSZ22111 • 14 • 001

TSZ02201-0F2F0C100080-1-2

9.Oct.2015 Rev.001

1/57

12 3 4 5 6 7...61

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