Datasheet > BD93941EFV

BD93941EFV

更新时间： 2024-12-01 01:14:15

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
31页	1222K
描述
White LED Driver for large LCD Panels (DCDC Converter type)

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BD93941EFV 数据手册

Datasheet

LED Drivers for LCD Backlights

White LED Driver for large LCD

Panels (DCDC Converter type)

BD93941EFV BD93941FP

General Description

Features

BD93941EFV and BD93941FP is a high efficiency driver

for white LEDs and designed for large LCDs. These ICs

are built-in a boost DCDC converters that employ an

array of LEDs as the light source. BD93941EFV and

BD93941FP have 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 BD93941EFV and BD93941FP are

available for the fail-safe design over a wide range

output voltage.

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

 Maximum LED Current: 200mA

 LED Feedback Voltage: 0.37V (@ADIM=2.5V)

so lower heat. Adjustable Feed Back Voltage

by following LED Current setting.



2% LED current accuracy (ADIM=2.5V,

when each LED is set to 100mA)

 Analog current (Linear) dimming at ADIM pin

 LED pin rating 60V

 Individual detection and individual LED OFF for both

open and short circuits

 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

 HTSSOP-B20 and HSOP20 package with high heat

radiation efficiency

Key Specification

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

 LED minimum current

 LED maximum current:

 Oscillator frequency:

 Operating Current:

30mA

200mA

150kHz (RT=100kΩ)

4.5mA (Typ.)

 Operating temperature range:

-40°C to +85°C

Applications

TV, Computer Display, Notebook, LCD Backlighting

Package

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

6.50mm x 6.40mm x 1.00mm

14.90mm x 7.80mm x 2.10mm

HTSSOP-B20

HSOP20

Figure 1(b). HSOP20

(BD93941FP)

Figure 1(a). HTSSOP-B20

(BD93941EFV)

Typical Application Circuit

VIN

Inductor

Diode

VIN

CIN

COUT

EXPOSED

PAD

REG58

CREG

RN2

FET

ON/OFF

REG58

STB

RVCC

VCC

RCS

DN RN1

CVCC

DCDC_GND

PGND

AGND

LED4

LED3

CLED4

CLED3

RRT

ROVP1

ROVP2

COVP

OVP

LED_GND

LED2

RFB CFB1

CLED2

CLED1

CFB2

LED1

PWM

CSS

AGND

ISET

AUTO

ADIM

RISET

CAUTO

ADIM

Figure 2. Typical Application Circuit

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

.www.rohm.com

TSZ02201-0F1F0C100270-1-2

12.Aug.2015 Rev.003

1/27

TSZ22111・14・001

12 3 4 5 6 7...31

中文翻译

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与BD93941EFV相关器件

型号	品牌	获取价格	描述	数据表
BD93941EFV_15	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD93941FP	ROHM	获取价格	LED pin rating 60V
BD93941FP-E2	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD93942F	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD93942F-E2	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD9394EFV	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD9394EFV-E2	ROHM	获取价格	LED Driver,
BD9394FP	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD9394FP_14	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)
BD9394FP-E2	ROHM	获取价格	White LED Driver for large LCD Panels (DCDC Converter type)

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