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UC3800G-S08-R PDF预览

UC3800G-S08-R

更新时间: 2024-11-19 01:03:23
品牌 Logo 应用领域
友顺 - UTC /
页数 文件大小 规格书
10页 221K
描述
LOW COST POWER-SAVING MODE PWM CONTROLLER

UC3800G-S08-R 数据手册

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UNISONIC TECHNOLOGIES CO., LTD  
UC3800/B  
Preliminary  
LINEAR INTEGRATED CIRCUIT  
LOW COST POWER-SAVING  
MODE PWM CONTROLLER  
FOR FLYBACK CONVERTERS  
DESCRIPTION  
The UTC UC3800/B is a high performance current mode PWM  
controller ideally suited for low standby power. High voltage startup  
is implemented in UTC UC3800/B, which features with short  
startup time and no standby current. 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.  
SOP-8  
The internal slope compensation improves system stability at  
high PWM duty cycle output. Leading-edge blanking on current  
sense input removes the signal glitch, which offering minimal  
external component count in the design. Excellent EMI  
performance is achieved with UTC proprietary frequency hopping  
technique (ZL201020615247.1) together with soft driver control.  
Audio noise is eliminated due to switch frequency more than 20kHz  
during operation.  
The UTC UC3800/B has such applications as: battery charger,  
power adaptor, set-top box power supplies, ink jet printers,  
open-frame SMPS.  
FEATURES  
* UTC proprietary frequency hopping technology for Improved EMI * Fixed switch frequency 65kHz  
performance.  
* Gate output voltage clamped at 16V  
* Low start-up current  
* Cycle-by-cycle Current Limiting  
* Under voltage lockout (UVLO)  
* Few external components required  
* Power-saving mode for high light-load and standby efficiency  
* Soft Start  
* Dynamic peak current limiting for constant output power  
* Built-in synchronized slope compensation  
* OTP,OLP,OVP, LNO-OVP, Brownout and VDD clamp for higher  
security  
ORDERING INFORMATION  
Ordering Number  
Package  
Packing  
Lead Free  
Halogen Free  
UC3800L-S08-R  
UC3800BL-S08-R  
UC3800G-S08-R  
UC3800BG-S08-R  
SOP-8  
SOP-8  
Tape Reel  
Tape Reel  
www.unisonic.com.tw  
Copyright © 2018 Unisonic Technologies Co., Ltd  
1 of 10  
QW-R103-083.d  

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