- 您现在的位置：买卖IC网 > PDF目录17200 > LM3445-EDSNEV/NOPB (National Semiconductor)BOARD EVAL LED DRIVER LM3445 PDF资料下载
参数资料
| 型号： | LM3445-EDSNEV/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 1/40页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LED DRIVER LM3445 |
| 标准包装： | 1 |
| 系列： | PowerWise® |
| 电流 - 输出 / 通道： | 205 ~ 340 mA |
| 输出及类型： | 1，非隔离 |
| 特点： | 可调光 |
| 输入电压： | 85 ~ 135 VAC |
| 已供物品： | 板 |
| 已用 IC / 零件： | LM3445 |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页
SNVS570L – JANUARY 2009 – REVISED MAY 2013
Triac Dimmable Offline LED Driver
Check for Samples: LM3445
1
FEATURES
DESCRIPTION
?
2
?
?
?
?
?
?
?
?
?
Triac Dim Decoder Circuit for LED Dimming
Application Voltage Range 80V AC – 277V AC
Capable of Controlling LED Currents Greater
Than 1A
Adjustable Switching Frequency
Low Quiescent Current
Adaptive Programmable Off-Time Allows for
Constant Ripple Current
Thermal Shutdown
No 120Hz Flicker
Low Profile 10-Pin VSSOP Package or 14-Pin
SOIC
Patent Pending Drive Architecture
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 V CC
under-voltage lockout.
APPLICATIONS
?
?
?
?
Retro Fit Triac Dimming
Solid State Lighting
Industrial and Commercial Lighting
Residential Lighting
Typical LM3445 LED Driver Application Circuit
V+
D3
V BUCK
95.0
C7
+
D9
14 Series connected LEDs
BR1
R2
D4
D8
C9
+
C10
C12
V LED
-
R4
90.0
TRIAC
DIMMER
VAC
D1
Q1
R5
D2
C5
D10
V LED-
L2
Q3
85.0
80.0
10 Series connected LEDs
LM3445MM
1 ASNS
U1
BLDR 10
R1
2 FLTR1
VCC 9
I COLL
75.0
80
90
100
110
120
130
140
C3
3 DIM
GATE 8
Q2
LINE VOLTAGE (V AC )
4 COFF
ISNS 7
5 FLTR2
GND 6
R3
C4
C11
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright ? 2009–2013, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| 695D686X0006F2T | CAP TANT 68UF 6V 20% 2414 |
| ECE-V1HAR33NR | CAP ALUM 0.33UF 50V 20% SMD |
| 695D685X9035F2T | CAP TANT 6.8UF 35V 10% 2414 |
| 9-1437188-9 | FLEXSTRIP JUMPER .100 5COND |
| SF20AG-T | DIODE SUPERFAST 2A 50V DO-15 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3445EVM-695 | 功能描述:LM3445 1, Non-Isolated Output LED Driver Evaluation Board 制造商:texas instruments 系列:- 零件状态:有效 电流 - 输出/通道:500mA 输出和类型:1，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:90 ~ 135 VAC 所含物品:板 使用的 IC/零件:LM3445 标准包装:1 |
| LM3445M | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Triac Dimmable Offline LED Driver |
| LM3445M/NOPB | 功能描述:LED照明驱动器 RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| LM3445M/NOPB NOPB | 制造商:Texas Instruments 功能描述:TRIAC DIMMABLE LED DRIVER |
| LM3445MM | 制造商:Texas Instruments 功能描述:LED DRIVER, TRIAC DIMMABLE, 10MSOP |
发布紧急采购，3分钟左右您将得到回复。