EEWORLDEEWORLDEEWORLD

Part Number

Search

LNK457

Description
LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications
File Size2MB,20 Pages
ManufacturerPower Integrations
Websitehttps://www.powerint.cn
Download Datasheet Compare View All

LNK457 Overview

LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications

LNK454/456-458/460
LinkSwitch-PL
Family
LED Driver IC with TRIAC Dimming, Single-Stage PFC and
Constant Current Control for Non-Isolated Applications
Product Highlights
Dramatically Simplifies Off-line LED Drivers
Flicker-free phase-controlled TRIAC dimming
Single-stage power factor correction and accurate constant
current (CC) output
Very low component count with small non-electrolytic bulk
capacitor for compact replacement lamp designs
Compact SO8, eSOP, and eDIP packages
Completely eliminates control loop compensation
Advanced Performance Features
Optimized for non-isolated flyback designs
Frequency jitter greatly reduces EMI filter size and costs
Low dissipation direct sensing of LED current
Advanced Protection and Safety Features
Cycle skipping regulation for abnormally low output power to
clamp peak output current delivered
725 V integrated power MOSFET allows small bulk capacitance
and maximizes power capability
Short-circuit, overload, open feedback and output overvoltage
protection
Hysteretic thermal shutdown
Meets high-voltage creepage between DRAIN and all other pins
both on PCB and at package
EcoSmart
- Energy Efficient
High power factor optimizes system lumen per input VA
Control algorithm balances switching and conduction losses
over line and load to maintain optimum efficiency
Figure 1.
AC
IN
D
LinkSwitch-PL
CONTROL
BP
S
FB
PI-5835-060710
Basic Application Schematic.
Output Power Table
Product
2
LNK454D
LNK456D
LNK457D/K/V
LNK458K/V
LNK460K/V
85-265 VAC
Minimum Output
Maximum Output
Power
Power
1
1.5 W
3W
3W
6W
4W
8W
6W
11.5 W
8W
16 W
Description
The LinkSwitch-PL family enables a very small and low cost
single-stage power factor corrected constant current driver for
solid state lighting. Optimized for direct LED current sensing, the
LinkSwitch-PL operates over a wide input voltage range delivering
an output power of up to 16 W. The LinkSwitch-PL control
algorithm provides flicker-free TRIAC dimming with minimal
external components.
Each device incorporates a 725 V rated power MOSFET, a novel
discontinuous mode variable frequency variable on-time controller,
frequency jitter, cycle-by-cycle current limit and hysteretic thermal
shutdown in a monolithic 4-pin IC, available in SO-8C, eSOP-12,
and eDIP-12 packages.
Table 1. Output Power Table.
Notes:
1. Maximum practical continuous power in an open frame design with adequate
heat sinking, measured at +50 °C ambient (see Key Applications Considerations
for more information).
2. Packages: D: SO-8C, K: eSOP-12, V: eDIP-12.
Output Current
Number of
Serial LEDs
1
2
3
4
5
6
7
8
9
10
11
12
Figure 2.
350 mA
LNK454
LNK454
LNK456
LNK456
LNK457
LNK457
LNK458
LNK458
LNK458
LNK460
LNK460
LNK460
500 mA
LNK454
LNK456
LNK456
LNK457
LNK458
LNK458
LNK460
LNK460
LNK460
700 mA
LNK454
LNK456
LNK457
LNK458
LNK460
LNK460
1000 mA
LNK456
LNK457
LNK458
LNK460
Device Selection Based on Length of Output LED Series String and
Current. A Typical Voltage Drop of 3.5 V per LED is Assumed.
www.powerint.com
October 2011

LNK457 Related Products

LNK457 LNK456 LNK458 LNK458K LNK460 LNK460K LNK460V LNK457V LNK457K LNK457D
Description LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications
Practical information on TI op amp application design (high-definition Chinese PDF)
Practical information on TI op amp application design (high-definition Chinese PDF)...
linda_xia Analogue and Mixed Signal
Which registry value does the touch screen driver modify?
After installing the touch screen driver, the mouse disappears when I click the screen. I have to use a USB mouse to calibrate it. After calibration, it works fine. However, the value I found in the r...
fhjfhj520 Embedded System
Analog electronics data, very good
I personally feel that these things have played a big role in my study. I am engaged in switching power supplies....
atmage89s52 Analog electronics
Who can provide the point-to-point communication technology between pn532 and Android NFC mobile phone? There is a reward. The specific requirements are as follows
You can use serial port commands to control pn532 and mobile phone to establish a link to ensure subsequent communication and realize point-to-point information interaction. Contact QQ: 1319530068...
那是我的最爱 Real-time operating system RTOS
SOT23-3 package also has size
Many SMD MOS tubes have different sizes of SOT23-3 packages. Some are relatively large, while others are normal (similar to the SOT23 of S8050 and S8550). Are all packages of different sizes SOT23-3? ...
gh131413 PCB Design
Enthusiasts make their own mini single-chip programmer
Homemade Mini Single-Chip Programmer [align=center][img=600,584]http://bbs.16rd.com/data/attachment/forum/201609/13/160407r717pt6dp9jv919q.gif[/img][/align]1. Supported chip models Supports the most c...
papril Renesas Electronics MCUs

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1745  2781  942  2117  1559  36  56  19  43  32 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号