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PDF AT3263 Data sheet ( Hoja de datos )
| Número de pieza | AT3263 | |
| Descripción | Current Mode PWM Controller | |
| Fabricantes | ATC | |
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T E C H N O L O GY
AT3263
Current Mode PWM Controller
Description
AT3263 is highly integrated current mode PWM
control IC optimized for high performance low
standby power offline fly back converter applications.
To meet the international power conservation
requirements, optimized green mode is integrated to
improve the efficiency at light or no load conditions
with no audible noise. Slope compensation is
integrated to ensure the stability at high load. Lead
edge blanking is integrated to prevent the false
trigger at the transition of the switch. Soft switching
control at the gate drive can improve the EMI
performance of the power supply. The Gate-drive
output is clamped at 18V to protect the power MOS.
AT3263 offers many protection functions with auto
self-recovery feature, including Cycle-by-Cycle
current limiting, over load protection (OLP) and
under voltage lockout (UVLO).
Excellent EMI performance is achieved with
frequency jitter technique together with soft switching
control at the totem pole gate driver.
AT3263 is offered in SOT23-6, SOP-8 and DIP-8
packages.
Features
●Frequency jitter function to improve EMI
performance of power supply
●No-audible-noise green mode Control
● External Programmable PWM Switching
Frequency
● Internal Slope Compensation
● Low VDD Startup Current and Low Operating
Current
● Leading Edge Blanking
● UVLO
● Gate Max Output Voltage Clamp at 18V
● Overload Protection (OLP).
● Line Compensation Over Current Protection
(OCP)
Applications
Offline AC/DC fly back converter for
● Battery Charger
● Power Adaptor
● Set-Top Box Power Supplies
● Open-frame SMPS
● PC 5V Standby Power
http://www.sirectsemi.com/atc
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| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet AT3263.PDF ] | |
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