LM3445MM
TI/NS
可控硅隔离调光
AC(80-277)V
大于1A
线性调光
企业名:深圳市德江电子有限公司
类型:贸易/代理/分销
电话: 0755-22383631
手机:13824359050
联系人:徐生
邮箱:bestriver@163.com
地址:广东深圳宝安区西乡街道共乐社区骏丰大厦9楼
型 号:LM3445MM/NOPB
厂 家:TI/NS
封 装:MSOP10
批 号:1536
数 量:7200
包装:1000 Units ,Tape and Reel
说 明:
德江电子代理分销 TI/NS 的 LM34 系列 IC , LM3445MM 是我司常备库存现货的物料。
Triac Dimmable Offline LED Driver
General Description
The LM3445 is an adaptive constant off-time AC/DC buck (step-down) constant current
controller designed to be compatible with triac dimmers. The LM3445 provides a constant
current for illuminating high power LEDs and includes a triac dim decoder. The dim decoder
allows wide range LED dimming using standard triac dimmers. The high frequency capable
architecture allows the use of small external passive components. The LM3445 includes a
bleeder circuit to ensure proper triac operation by allowing current flow while the line voltage
is low to enable proper firing of the triac. A passive PFC circuit ensures good power factor by
drawing current directly from the line for most of the cycle, and provides a constant positive
voltage to the buck regulator. Additional features include thermal shutdown, current limit and
VCC under-voltage lockout.
Features
1)Triac dim decoder circuit for LED dimming
2)Application voltage range 80VAC – 277VAC
3)Capable of controlling LED currents greater than 1A
4)Adjustable switching frequency
5)Low quiescent current
6)Adaptive programmable off-time allows for constant ripple current
7)Thermal shutdown
8)No 120Hz flicker
9)Low profile 10 pin MSOP Package or 14 pin SOIC
10)Patent pending drive architecture
Applications
1) Retro Fit Triac Dimming
2) Solid State Lighting
3) Industrial and Commercial Lighting
4) Residential Lighting
企业名:深圳市德江电子有限公司
类型:贸易/代理/分销
电话: 0755-22383631
手机:13824359050
联系人:徐生
邮箱:bestriver@163.com
地址:广东深圳宝安区西乡街道共乐社区骏丰大厦9楼
友情链接: 深圳市元东发电子有限公司