Datasheet > BD9422EFV

BD9422EFV

更新时间： 2024-09-25 01:14:15

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
30页	1131K
描述
White LED Driver for large LCD panel

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BD9422EFV 数据手册

Datasheet

LED Drivers for LCD Backlights

White LED Driver for large LCD

panel

BD9422EFV

●General Description

●Features

BD9422EFV 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. BD9422EFV

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 BD9422EFV is

available for the fail-safe design over a wide range

output voltage.

■ 6ch Constant LED drivers, available 400mA drive

per 1ch.

■

Constant current accuracy ±1.8% (IC only)

Each 6ch external PWM inputs can control independent

dimming .

■

Current analog (linear) dimming by VREF

1ch boost controller with current mode (external FET)

Several protection functions

DCDC part

: OCP/OVP/UVLO/TSD

LED driver part :OPEN,SHORT detection

SHORT detection voltage is set by LSP terminal.

Error detection output FAIL terminal inside

(normal=Open, error=Drain)

■

●Key Specification

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

 Oscillator frequency:

 Operating Current:

500kHz (RT=30kΩ)

9mA (typ.)

Master/Slave mode inside

 Operating temperature range:

-40°C to +85°C

●Package

●Applications

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

13.60mm x 7.80mm x 1.00mm

0.65mm

TV, Computer Display, Notebook, LCD Backlighting

HTSSOP-B40

Pin Pitch:

●Typical Application Circuit

Figure 2. HTSSOP-B40

Figure 1. Typical Application Circuit

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

.www.rohm.com

TSZ02201-0F1F0C100210-1-2

1.Sep.2015 Rev.006

1/26

TSZ22111・14・001

12 3 4 5 6 7...30

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