L2264 PDF даташит
Спецификация L2264 изготовлена «LIZE» и имеет функцию, называемую «Current Mode PWM Controller». |
|
Детали детали
Номер произв | L2264 |
Описание | Current Mode PWM Controller |
Производители | LIZE |
логотип |
10 Pages
No Preview Available ! |
Shenzhen LIZE Electronic Technology Co., Ltd
SPECIFICATION
L2264
Current Mode PWM Controller
REV 1.0
reserves the right to change this documentation without prior notice
No Preview Available ! |
Shenzhen LIZE Electronic Technology Co., Ltd
L2264
Current Mode PWM Controller Frequency Shuffling
General Description
L2264 is a current mode PWM power switch IC. It
combines a current mode PWM controller and a
power MOSFET. It is optimized for high performance
off-line flyback converter application in sub 18 W
range. For lower the standby power and higher RoHS
compliant, the IC offers a Burst Mode control feature
and ultra-low start-up current and operating current,
that is, at the condition of no load or light
load,L2264 can reduce the switch frequency linearly
which minimize the switching power loss; the
ultra-low startup current and operating current make
a reliable power for startup design, and also large
resistor can be used in the startup circuit to improve
switching efficiency.
The internal synchronous slope compensation circuit
reduces the possible subharmonic oscillation at high
PWM duty cycle output. Leading-edge blanking on
current sense(CS) input removes the signal glitch due
to snubber diode circuit reverse recovery and thus
greatly reduces the external component count and
system cos t in the design. L2264 offers
comprehensive protection coverage with automatic
self-recovery feature, including cycle by cycle over
current protection (OCP), over load protection
(OLP), under voltage lockout (UVLO). The
gate-driven output is clamped to maximum 18V to
protect the internal MOSFET.
Excellent EMI performance is achieved by using the
soft-switching and frequency jittering at the
totem-pole-gate-drive output. The tone energy at
below 20KHZ is minimized in the design and audio
noise is eliminated during operation. The L2264 is
the ideal substitute of the linear power supply or the
RCC-mode power, for a better performance of the
whole switch power system and a lower cost.
L2264 is available in DIP-8 package.
Features
▼ Burst Mode control
▼ 4uA ultra-low startup current
▼ 1.4mA Low operating current
▼ Built-in Leading-edge blanking
▼ Built-in synchronous slope compensation
circuit
▼ Current Mode operates
▼ External programmable PWM switching
frequency
▼ Cycle by cycle over current protection
(OCP)
▼ VDD over voltage clamp & under voltage
lockout( UVLO)
▼ Maximum Gate-driven output voltage
clamped at 18V
▼ Frequency jittering
▼ Constant limited output power
▼ Over load protection (OLP)
▼ Free audio noise operation
▼ Build in high voltage power MOSFET
Applications
Universal switch power supply equipment and offline
AC/DC flyback power converter
Power Adapter
STB Power Supplies
Open-frame SMPS
Battery Charger
Page1
2013.4
No Preview Available ! |
Shenzhen LIZE Electronic Technology Co., Ltd
L2264
Current Mode PWM Controller Frequency Shuffling
Typical Application Circuit
L2264
Output Power Table
Product
230VAC±15%
Open Frame1
85-265VAC
Open Frame1
L2264
18W
13W
Note1:Maximum practical continuous power in an open frame design with sufficient drain pattern as
a heat sink,at 50℃
Pin Definition and Device Marking
Page2
2013.4
Скачать PDF:
[ L2264.PDF Даташит ]
Номер в каталоге | Описание | Производители |
L2263 | Current Mode PWM Controller | LIZE |
L2264 | Current Mode PWM Controller | LIZE |
L2269 | Current Mode PWM Controller | LIZE |
Номер в каталоге | Описание | Производители |
TL431 | 100 мА, регулируемый прецизионный шунтирующий регулятор |
Unisonic Technologies |
IRF840 | 8 А, 500 В, N-канальный МОП-транзистор |
Vishay |
LM317 | Линейный стабилизатор напряжения, 1,5 А |
STMicroelectronics |
DataSheet26.com | 2020 | Контакты | Поиск |