Datasheet > BD9394FP-E2

BD9394FP-E2

更新时间： 2024-02-10 04:19:57

品牌	Logo	应用领域
罗姆 - ROHM		驱动接口集成电路
页数	文件大小	规格书
32页	1105K
描述
White LED Driver for large LCD Panels (DCDC Converter type)

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技术参数
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BD9394FP-E2 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	10 weeks	风险等级：	1.8
接口集成电路类型：	LED DISPLAY DRIVER	峰值回流温度（摄氏度）：	NOT SPECIFIED
处于峰值回流温度下的最长时间：	NOT SPECIFIED

BD9394FP-E2 数据手册

Datasheet

LED Drivers for LCD Backlights

White LED Driver for large LCD

Panels (DCDC Converter type)

BD9394FP, BD9394EFV

●General Description

●Features

BD9394FP, BD9394EFV is a high efficiency driver for

white LEDs and designed for large LCDs. This IC is

built-in a boost DCDC converters that employ an array of

LEDs as the light source. BD9394FP, BD9394EFV has

some protect function against fault conditions, such as

the over-voltage protection (OVP), the over current limit

protection of DCDC (OCP), the short circuit protection

(SCP), the open detection of LED string. Therefore

BD9394FP, BD9394EFV is available for the fail-safe

design over a wide range output voltage.

 4ch LED constant current driver and DC/DC converter

 Maximum LED Current: 150mA

 LED Feedback Voltage: 0.37V (@NADIM=2.62V),

so lower heat. Adjustable Feed Back Voltage

by following LED Current setting.



2% LED current accuracy (NADIM=2.62V,

when each LED is set to 100mA)

 Analog current (Linear) dimming at NADIM pin

 LED pin rating 60V

 Individual detection and individual LED OFF for both

open and short circuits

●Key Specification

 Built-in ISET pin short-circuit protection circuit

 Set Soft-Start time by external capacitor.

 FET’s Gate (N pin) is driven by 5.8V swing

 Built-in Vout discharge circuit for shutdown

 Built-in Vout overvoltage protection (OVP) /

reduced voltage protection (SCP) circuit

 Adjustable LED Short Protection Voltage

by LSP terminal

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

 LED minimum current

 LED maximum current:

 Oscillator frequency:

 Operating Current:

30mA

150mA

150kHz (RT=100kΩ)

4.5mA (Typ.)

Operating temperature range:

-40℃ to +85℃

●Applications

 HSOP20, HTSSOP-B24 package with high heat

radiation efficiency

TV, Computer Display, Notebook, LCD Backlighting

●Package

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

14.90mm x 7.80mm x 2.10mm

7.80mm x 7.60mm x 1.00mm

HSOP20

HTSSOP-B24

● Typical Application Circuit (4 light with PWM)

Fig.1(a) HSOP20

Fig.1(b) HTSSOP-B24

VIN

Inductor

VIN

Diode

CIN

COUT

REG58

CREG

FIN1, 2

RN2

FET

ON/OFF

REG58

STB

RVCC

VCC

RCS

DN RN1

CVCC

DCDC_GND

LED4

CLED4

RRT

LED3

GND

ROVP1

ROVP2

CLED3

COVP

OVP

LED_GND

RFB CFB1

LED2

LED1

REG58

CLED2

CLED1

RLSP1

RLSP2

CFB2

LSP

CLSP

CSS

PWM

GND

ISET

AUTO

NADIM

RISET

CAUTO

NADIM

Fig.2 Typical Application Circuit

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

.www.rohm.com

TSZ02201-0F1F0C100180-1-2

09.May.2014 Rev.003

1/28

TSZ22111・14・001

12 3 4 5 6 7...32

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