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UC3853BL-S08-R PDF预览

UC3853BL-S08-R

更新时间: 2024-11-01 15:55:51
品牌 Logo 应用领域
友顺 - UTC 开关
页数 文件大小 规格书
14页 648K
描述
Switching Controller,

UC3853BL-S08-R 技术参数

生命周期:ActiveReach Compliance Code:unknown
风险等级:5.72模拟集成电路 - 其他类型:SWITCHING CONTROLLER
Base Number Matches:1

UC3853BL-S08-R 数据手册

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UNISONIC TECHNOLOGIES CO., LTD  
UC3853  
Advance  
LINEAR INTEGRATED CIRCUIT  
CURRENT MODE PWM  
CONTROLLER FOR FORWARD  
AND FLYBACK APPLICATIONS  
DESCRIPTION  
The UTC UC3853 is a high performance current mode PWM  
controller ideally suited for low standby power. Low VDD startup  
current make the power reliable on startup design and a large  
value resistor could be used to minimize the standby power. At no  
load condition, the IC operates in power-saving mode for lower  
standby power, decreasing frequency for Higher conversion  
efficiency at light load condition. It contains protection with  
automatic recovery including OLP, OCP, VCC OVP, BNO and  
OTP. To protect the power MOSFET, Gate-drive output is fixed up  
to 15V max.  
SOP-8  
Excellent EMI performance is achieved with UTC proprietary  
frequency hopping technique (ZL201020615247.1) together with  
soft driver control. The controller offers everything needed to build  
cost−effective and reliable ac−dc switching supplies dedicated to  
ATX power supplies. Finally a SOP-8 package saves PCB space  
and represents a solution of choice in cost sensitive project.  
FEATURES  
* Peak Current Mode Control  
* Adjustable Switching Frequency  
* Adjustable Soft−start Timer  
* Adjustable Internal Ramp Compensation  
* Jittering Frequency ±6% of the Switching Frequency  
* Power-saving mode for high standby efficiency  
* Auto−recovery Primary OCP with 10ms Fixed Delay  
* Auto−recovery Brown−Out Detection  
* Delayed Operation Upon Start−up via an Internal Fixed Timer  
* UC384X−like UVLO Thresholds  
* VCC from 9V to 28V with Auto−recovery UVLO  
* Internal 350ns Leading Edge Blanking  
* Gate output voltage clamped at 15V  
* UC3853A: Maximum 47% Duty Cycle  
* UC3853B: Maximum 75% Duty Cycle  
www.unisonic.com.tw  
1 of 14  
Copyright © 2019 Unisonic Technologies Co., Ltd  
QW-R103-167.a  

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