电流模式 PWM 控制器

VPC5021 离线式脉宽调制（PWM）控制器采用电流模式控制实现高效离线式单端反激/正激电源转换器的应用。VIN 高压供电端口实现超低启动电流（小于5uA），启动电压 20V，欠压锁定电压 7.6V，在一定启动时间下最大程度地降低启动网络的功耗，可实现低待机功耗的 ACDC 电源变换器。VDD 低压供电端口启动电压低至 7.4V，从而也可以满足低输入电压的 DCDC开关电源的应用。\r\n\r\nVPC5021 控制器在较重负载时固定工作于设定好的最大工作频率下进行 PWM 调制，随着负载减轻到一定程度，控制器通过逐级模拟降频工作模式来优化全负载范围效率，同时获得较低的轻负载纹波电压和空载功 • 超低启动电流（最大值为 5uA）\r\n• 集成 1.5A 峰值电流栅极驱动器\r\n• 轻负载逐级模拟降频优化效率曲线\r\n• 逐周期限流保护和短路保护、过温保护\r\n• 直接光耦合器接口\r\n• 内置斜坡补偿\r\n• MSOP8 超小体积封装形式;

VPSC

源特科技

Stick Antenna

文件：949.85 Kbytes 页数：11 Pages

PULSE

Crystals

Features and Applications • General, industrial, microcontrollers • Cost Effective • Well established product • Wide frequency range • Superior resistance weld HC-49/U metal case Supplied loose as standard. Taped productavailableto special order

文件：432.85 Kbytes 页数：8 Pages

MULTICOMP

易络盟

Crystal Oscillator Module ICs

OVERVIEW The SM5021 series are crystal oscillator module ICs fabricated in NPC’s Molybdenum-gate CMOS, that incorporate high-frequency, low current consumption oscillator and output buffer circuits. Highly accurate thin-film feedback resistors and high-frequency capacitors are built-in, eliminati

文件：105 Kbytes 页数：11 Pages

NPC

Crystal Oscillator Module ICs

OVERVIEW The SM5021 series are crystal oscillator module ICs fabricated in NPC’s Molybdenum-gate CMOS, that incorporate high-frequency, low current consumption oscillator and output buffer circuits. Highly accurate thin-film feedback resistors and high-frequency capacitors are built-in, eliminati

文件：105 Kbytes 页数：11 Pages

NPC

Crystal Oscillator Module ICs

OVERVIEW The SM5021 series are crystal oscillator module ICs fabricated in NPC’s Molybdenum-gate CMOS, that incorporate high-frequency, low current consumption oscillator and output buffer circuits. Highly accurate thin-film feedback resistors and high-frequency capacitors are built-in, eliminati

文件：105 Kbytes 页数：11 Pages

NPC