EEWORLDEEWORLDEEWORLD

Part Number

Search

LC5540LD

Description
Single-Stage Power Factor Corrected Off-Line Switching Regulators
File Size272KB,11 Pages
ManufacturerSANKEN
Websitehttp://www.sanken-ele.co.jp/en/
Download Datasheet Compare View All

LC5540LD Overview

Single-Stage Power Factor Corrected Off-Line Switching Regulators

LC5540LD Series
Single-Stage Power Factor Corrected
Off-Line Switching Regulators
Features and Benefits
• Integrated on-width control circuit (it realizes high power
factor by average current control)
• Integrated startup circuit (no external startup
circuit necessary)
• Integrated soft-start circuit (reduces power stress during
start-up on the incorporated power MOSFET and rectifier)
• Integrated bias assist circuit (improves the startup
performance, suppresses V
CC
voltage droop during
operation, allows reduction of VCC capacitor value as well
as use of a ceramic capacitor)
• Integrated Leading Edge Blanking (LEB) circuit
• Integrated maximum on-time limit circuit
• Dual-chip structure, with an avalanche-guaranteed power
MOSFET (allows simplified surge suppressing circuits)
• Protection features:
Overcurrent protection (OCP): pulse-by-pulse
Overvoltage protection (OVP): latched shutdown
Overload protection (OLP): latched shutdown
Thermal shutdown (TSD): latched shutdown
Description
LC5540LD series is a quasi-resonant topology switching
power supply IC, designed for input capacitorless applica-
tions, and making it possible for systems to comply with the
harmonics standard (IEC61000-3-2 class C). It incorporates
separate controller and power MOSFET chips. The control-
ler adapts the average current control method for realizing
high power factors, and the quasi-resonant topology contrib-
utes to high efficiency and low EMI noise. The rich set of
protection features helps to realize low component counts,
and high performance-to-cost power supply.
The LC5540LD devices are intended for isolated designs.
The incorporated MOSFET has a V
DSS
(min) rating from
650 V (LC5545LD and LC5546LD) to 800 V (LC5548LD).
The R
DS(on)
(max) is 1.9
Ω
(LC5546LD) to 3.95
Ω
(LC5545LD). It is capable of a maximum output power
of 20 W on 230 VAC supply to 16 W on universal supply
(LC5546LD) based on the thermal rating. Note that the
maximum output power can be up to 120% to 140% of this
value. However, it may be limited in applications with low
output voltage or short duty cycle.
Package: 8-pin DIP
Not to scale
Applications
• LED lighting fixtures
• LED light bulbs
Typical Application
F1
L1
D1
VAC
C1
D3
D4
C2
C9
D9
U1
LC554xLD
8
D/ST
C3
Control
Part
S/GND VCC OCP FB
1
2
3
4
R7
C5
R2
(Rocp)
R3
C6
D7
PC1
C7
OVP
6
D5
S/GND
5
NF
PC2
R6
D6
C17
R1
R9
PC1
R12
C4
DZ2
DZ1
C12
U2
C8
R5
D2
L2
T1
D8
PC2
C10
Q1
R13
R11
C13
R17
-
+
C14
R16
R14
R15
R18
C15
R19 R20
C16
LED
C11
R8 R10
R4
LC5540LD-DS
SANKEN ELECTRIC CO., LTD.

LC5540LD Related Products

LC5540LD LC5545LD LC5546LD LC5548LD
Description Single-Stage Power Factor Corrected Off-Line Switching Regulators Single-Stage Power Factor Corrected Off-Line Switching Regulators Single-Stage Power Factor Corrected Off-Line Switching Regulators Single-Stage Power Factor Corrected Off-Line Switching Regulators
Continuous counting problem in 430 timer
[code]//********************************************** ********************************* // MSP430G2xx3 Demo - Timer_A, Toggle P1.0, CCR0 Cont. Mode ISR , DCO SMCLK // // Description: Toggle P1.0 usin...
mvfntft Microcontroller MCU
Is there any free armcc?
Is there a free armcc? I need to compile a small piece of code recently. It is used to disable the debugging serial port. I have to use this compiler. There is no solution. DS5 is paid and large. What...
cl17726 Embedded System
Here is some DSP learning materials
See attachment!...
ys3663391 FPGA/CPLD
Who knows the model of this switching power supply chip?
The switching power supply chip is printed with 16A10 on the top and PCWN on the bottom, SO-8 package. Does anyone know the model of this chip?...
chilezhima Power technology
Zigbee low power consumption steps
Zigbee turns on low power consumption1. Add POWER_SAVING in pre-compilation2. Modify the -DRFD_RCVC_ALWAYS_ON parameter in f8wConfig.cfg in the TOOLS folder.-DRFD_RCVC_ALWAYS_ON was originally TRUE, c...
Aguilera RF/Wirelessly
Does anyone have a USB driver made with VS2005+WINCE6.0?
I am a novice and want to use VS2005+WINCE6.0 to make a USB driver, but I don't know where to start. How to build the project? Which expert has sample code for this? Can you give it to me to learn fro...
春暖花开 Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1812  2255  1007  1327  1025  37  46  21  27  9 
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