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LM3450MTXSLASHNOPB.A中文资料

厂家型号

LM3450MTXSLASHNOPB.A

文件大小

703.06Kbytes

页面数量

42

功能描述

LED Drivers with Active Power Factor Correction and Phase Dimming Decoder

数据手册

下载地址一下载地址二到原厂下载

简称

TI2德州仪器

生产厂商

Texas Instruments

中文名称

美国德州仪器公司官网

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LM3450MTXSLASHNOPB.A数据手册规格书PDF详情

1FEATURES

2• Critical Conduction Mode PFC

• Over-Voltage Protection

• Feedback Short Circuit Protection

• 70:1 PWM Decoded From Phase Dimmer

• Analog Dimming

• Programmable Dimming Range

• Digital Angle and Dimmer Detection

• Dynamic Holding Current

• Smooth Dimming Transitions

• Low Power Operation

• Start-Up Pre-Regulator Bias

• Precision Voltage Reference

APPLICATIONS

• Dimmable Downlights, Troffers, and Lowbays

• Large Form Factor Bulbs

• Indoor and Outdoor Area SSL

• Power Supply PFC

DESCRIPTION

The LM3450/50A is a power factor controller (PFC)

with separate phase dimming decoder. The PFC

regulates the output voltage while maintaining

excellent power factor. The phase dimming decoder

interprets the phase angle and remaps it to a 500Hz

PWM output. This device is ideal for implementing a dimmable off-line LED driver for 10-100W loads.

The phase dimming decoder has several unique

features. The input-output mapping is programmable

for design flexibility, while a dynamic filter and

variable sampling rate provide smooth uniform

dimming. A dynamic hold circuit ensures that the phase dimmer angle is decoded properly while

minimizing extra power loss.

The LM3450A is identical to the LM3450 with the

exception of one circuit operation. The dynamic hold

current is sampled in the LM3450 while it

continuously operates in the LM3450A. This

difference between the two devices defines the suitable applications for each. The following is a

general guideline for choosing the correct device:

• Any 120V designs with POUT > 15W - LM3450A

• Any 230V designs with POUT > 25W - LM3450A

• 120V 2-Stage designs with POUT < 15W - LM3450

• 230V 2-Stage designs with POUT

更新时间:2025-7-23 11:00:00
供应商 型号 品牌 批号 封装 库存 备注 价格
NS/国半
23+
TSSOP-16
50000
全新原装正品现货,支持订货
NS/国半
24+
TSSOP-16
60000
TI/德州仪器
23+
MSOP10
13000
原厂授权一级代理,专业海外优势订货,价格优势、品种
TI/德州仪器
24+
MSOP10
1500
只供应原装正品 欢迎询价
THK
2021+
1000
只做原装,可提供样品
NS/MOT
24+
TO-3
1683
NS/MOT
专业铁帽
TO-3
67500
铁帽原装主营-可开原型号增税票
NS
CAN
8650
一级代理 原装正品假一罚十价格优势长期供货
NS
2015+
TO-3(铁帽)
19889
一级代理原装现货,特价热卖!
NSC
3
公司优势库存 热卖中!!

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Texas Instruments 美国德州仪器公司

中文资料: 20552条

德州仪器(Texas Instruments),简称TI,是全球领先的半导体公司,为现实世界的信号处理提供创新的数字信号处理(DSP)及模拟器件技术。除半导体业务外,还提供包括传感与控制、教育产品和数字光源处理解决方案。TI总部位于美国德克萨斯州的达拉斯,并在25多个国家设有制造、设计或销售机构。德州仪器是推动互联网时代不断发展的半导体引擎,作为实时技术的领导者,TI正在快速发展,在无线与宽带接入等大型市场及数码相机和数字音频等新兴市场方面,凭借性能卓越的半导体解决方案不断推动着互联网时代的前进步伐。TI预想未来世界的方方面面都渗透着TI产品的点点滴滴,每个电话、每次上网、拍的每张照片、听的每