L2355 PDF даташит
Спецификация L2355 изготовлена «LIZE» и имеет функцию, называемую «Current Mode PWM Controller». |
|
Детали детали
Номер произв | L2355 |
Описание | Current Mode PWM Controller |
Производители | LIZE |
логотип |
11 Pages
No Preview Available ! |
Shenzhen LIZE Electronic Technology Co.,Ltd
SPECIFICATION
L2355
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
General Description
L2355 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,L2355 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. L2355 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 L2355 is
the ideal substitute of the linear power supply , for
a better performance of thewhole switch power
system and a lower cost.L2355 is available in
SOP-7 package.
Features
▼ Burst Mode control
▼ 4uA ultra-low startup current
▼ 1.4mA Low operating current
▼ Built-in Leading-edge blanking
▼ Built-in
synchronous
compensation circuit
▼ Current Mode operates
slope
▼ Fixed frequency 65kHz
▼ 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
reserves the right to change this documentation without prior notice
No Preview Available ! |
Shenzhen LIZE Electronic Technology Co.,Ltd
Typical Application Circuit
Output table
Product
230VAC±15%
85-265VAC
L2355
Open Frame1
6W
Open Frame1
5W
Note1:Maximum practical continuous power in an open frame
design with sufficient drain pattern as a heat sink,at 50℃
reserves the right to change this documentation without prior notice
Скачать PDF:
[ L2355.PDF Даташит ]
Номер в каталоге | Описание | Производители |
L2355 | Current Mode PWM Controller | LIZE |
L2358 | Current Mode PWM Controller | LIZE |
L2359 | 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 |