Datasheet > BD94121F-E2

BD94121F-E2

更新时间： 2024-11-30 21:21:39

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
27页	2885K
描述
LED Driver

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技术参数
数据手册

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BD94121F-E2 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.7	接口集成电路类型：	LED DISPLAY DRIVER
Base Number Matches：	1

BD94121F-E2 数据手册

Datasheet

PFC Direct current resonance type

White LED Driver for Large LCD

BD94121F

General Description

Key Specifications

BD94121F is a current resonance type LED Driver with

frequency-controlled LED current. It can connect to PFC

directly and can use half-bridge structure reducing the

number of external components.



Operating Power Supply Voltage Range:

9.0V to 18.0V



Minimum Oscillator Frequency:

67kHz

(RRT=27kΩ,RADJ=44kΩ,VFB=3.2V)

It incorporates some protection functions against fault

conditions such as Over-Voltage Protection, LED Short

Detection (IS High Detection) and LED Open Detection

(IS Low Detection).



Operating Current:

Operating Temperature Range:

2.3mA (Typ)

-40°C to +85°C

Package

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

11.20mm x 7.80mm x 2.01mm

SOP18

Features

Pin pitch

1.27mm



20V High Rating Process

1 Channel Push-pull Control

Current and Voltage Feedback by Driving

Frequency



Adjustable Soft Start

Adjustable Timer Latch

Under-Voltage Detection for IC’s Power Line

Output Over-Voltage Protection

Output Error Signal from FAIL Terminal

Shift to Save Mode by STB Terminal

Burst Control by External PWM Signal

Analog Dimming by External DC Signal

Conversion Function from Pulse to DC

Applications



TV, Computer Display, LCD Backlighting.

Figure. 1 SOP18

Typical Application Circuit

< Primary Side >

VCC

GND

VCC

PDIM

STB

PDIM

PVIN

ON/OFF

PWMIN

GND

PWM

ERR

FAIL

PDIM

CSS CSDON

CFBVS

CFBIS

RFBVS

RFBIS

RADJ

RRT

CCP

< Secondary Side >

Figure. 2 Typical Application Circuit(s)

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

.www.rohm.com

TSZ02201-0F5F0C100100-1-2

22.Feb.2016 Rev.001

1/24

TSZ22111 • 14 • 001

12 3 4 5 6 7...27

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