高性能低成本 PWM 控制功率器

U323是一款高性能低成本 PWM 控制功率器，适用于离线式小功率降压型应用场合，外围电路简单、器件个数少。同时产品启动模块内置高耐压 MOSFET 可提高系统浪涌耐受能力。与传统的 PWM 功率开关不同，U323内部无固定时钟驱动MOSFET，系统开关频率随负载（轻载、重载）变化可实现自动调节。同时芯片采用了多模式 PWM控制技术，有效简化了外围电路设计，提升线性调整率和负载调整率并消除系统工作中的可闻噪音。此外，芯片内部峰值电流检测阈值可跟随实际负载情况自动调节，可以有效降低空载情况下的待机功耗。U323集成有完备的带自恢复功能的保护功能：VDD 欠压保护、逐周期电流限制、输出过压保护、过

UNIU-SEMIC

宇力

低压DC-DC芯片

UNIU-SEMIC

宇力

0.3 inch ( 7.62 mm ) DUAL DIGIT NUMERIC LED DISPLAYS

DESCRIPTION The UVD-322/323 is 0.3 inch ( 7.62 mm ) height dual digit display. Choices of five colors-high efficiency red/bright red/green/yellow/red orange. High efficirncy red display has red face and red segment. Bringht red ,green, yellen and red orange displays have black face and white s

文件：72.35 Kbytes 页数：5 Pages

UOT

东贝光电

Comb Filter Video Processor

Introduction The VPC 323xD is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz and 100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 331x) and/or it can be used with 3rd-party products. The main featur

文件：1.24515 Mbytes 页数：78 Pages

MICRONAS

NPN SILICON PLANAR HIGH SPEED SWITCHING TRANSISTORS

FEATURES * 15 Volt VCEO *fT=600 MHz APPLICATIONS * VHF/UHF operation

文件：55.47 Kbytes 页数：2 Pages

ZETEX