参数资料
型号: LC5511D
元件分类: 稳压器
英文描述: POWER FACTOR CONTROLLER, 18 kHz SWITCHING FREQ-MAX, DIP7
封装: DIP-8/7
文件页数: 1/40页
文件大小: 888K
代理商: LC5511D
Introduction
The LC5500 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 con-
tributes to high efficiency and low EMI noise. The series is
housed in either DIP8 or TO-220F-7L (Sanken designator:
FMY207) packages, depending on output power capability.
The rich set of protection features helps to realize low com-
ponent counts, and high performance-to-cost power supply.
Features and Benefits
DIP8 package (LC551xD/LC552xD) and TO-220F-7L
package (LC5523F)
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 output
diode)
Integrated bias assist circuit (improves the startup
performance, suppresses VCC 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)
Single-Stage Power Factor Corrected Off-Line Switching Regulators
Figure 1. The LC5500 series packages for lower wattage versions
are fully molded DIP8s, with pin 7 removed for greater isolation. For
higher wattages, the TO-220F-7L fully molded package is provided,
with three leadform options, all which provide a separation between
pins 1 and 2.
Application Information
48102.002
TO-220F-7L
(LF 3052)
TO-220F-7L
(LF 3054)
TO-220F-7L
(LF 3051)
DIP8
Protection features:
Overcurrent protection (OCP): pulse-by-pulse
Overvoltage protection (OVP): intermittent oscillation
operation, OVP-activating pins vary by product series:
OVP-Activating Pins
Series
VCC
ISENSE
OVP
OCP
LC551xD
×
×
LC552xD
×
×
LC552xF
×
×
Overload protection (OLP): intermittent oscillation
operation
Thermal shutdown (TSD): halts switching operation and
latches in the off-state
The product lineup for the LC5500 series provides the following options:
Part
Number
MOSFET
VDSS(min)
(V)
RDS(on)
(max)
(Ω)
Isolation
Package
POUT*
(W)
230 VAC
Universal
(Wide)
LC5511D
650
3.95
Non-
isolated
DIP8
13
10
LC5513D
1.9
20
16
LC5521D
3.95
Isolated
13
10
LC5523D
1.9
20
16
LC5523F
TO-220F-
7L
60
40
*Based on the thermal rating; the allowable maximum output power can be up to
120% to 140% of this value. However, maximum output power may be limited in an
applications with low output voltage or short duty cycle.
Part Number Assignment
LC55nna
ABC D
A
Product series name
B
Indicates non-isolated or isolated:
1 – Non-isolated, 2 – Isolated
C
On-resistance of the incorporated MOSFET:
1 – 3.95 Ω, 3 – 1.9 Ω
D
Indicates the package:
D – DIP8, F – TO-220F-7L (FMY207)
相关PDF资料
PDF描述
LC5521D 2.5 A POWER FACTOR CONTROLLER, 18 kHz SWITCHING FREQ-MAX, DIP7
LC72137 PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP22
LC72137M PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20
LC72137 PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP22
LC72137M PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20
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