Datasheet > BD9412F

BD9412F

更新时间： 2024-12-01 01:14:11

品牌	Logo	应用领域
罗姆 - ROHM		功率因数校正
页数	文件大小	规格书
28页	2270K
描述
PFC Direct current resonance type White LED Driver for Large LCD

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BD9412F 数据手册

Datasheet

PFC Direct current resonance type

White LED Driver for Large LCD

BD9412F

General Description

Key Specifications

BD9412F 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.

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 Power Supply Voltage Range:

9.0V to 18.0V

60kHz (R_RT=100kΩ)

2.3mA (Typ)



Oscillator Frequency:

Operating Current:

Operating Temperature Range:

-40°C to +85°C

Package

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

11.20mm x 7.80mm x 2.01mm

Pin pitch 1.27mm

SOP18

Features



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

PDIM

STB

PDIM

PVIN

ON/OFF

PWMIN

GND

PWM

ERR

FAIL

PDIM

BD9412F

VCC

ON/OFF

PWMIN

< 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

TSZ02201-0F5F0C100070-1-2

12.Aug.2015 Rev.002

1/24

TSZ22111 • 14 • 001

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