5V/12V 同步降压型 DC/DC PWM 控制器

RT8105A为内建MOSFET闸极驱动的 同步降压型 DC/DC PWM 控制器，具备5V/12V的供应电源，300kHz的恒定切换频率并采用电压模式控制。据内部补偿的反饋控制回路可大幅减少转换器的设计复杂度。RT8105A提供 致能/关闭 功能以支持电源顺序控制的设计，并提供多项的错误防护功能以保护负载。此产品并采用无损耗的低端MOSFET RDS(ON)电流感测技术与可调整的阈值以达到过电流保护机制。其它特色包含内部缓开机以及VIN侦测功能。 •5V 至 12V 供应电压\n•内建非交迭式N-MOSFET 驱动器\n•300kHz 恒定切换频率\n•内建控制回路补偿\n• 致能/关闭 控制 \n• 广范围0 至 100% 占空比\n•低端MOSFET RDS(ON)电流感测\n• 具抗噪声的可调电流感测 \n• 全时序电压过高保护 \n•快速瞬时响应\n• 内建缓开机\n• 符合RoHS规范与无卤特性;

Richtek

立锜科技

400 MHz QUADRATURE MODULATOR FOR DIGITAL MOBILE COMMUNICATION

DESCRIPTION The µPC8105GR is a sillicon monolithic integrated circuit designed as quadrature modulator for digital mobile communication systems. This modulator housed in a 16 pin plastic SSOP that is easy to install and contributes to miniaturizing the system. The device has power save function

文件：129.83 Kbytes 页数：16 Pages

NEC

瑞萨

UP-CONVERTER WITH AGC FUNCTION QUADRATURE MODULATOR IC FOR DIGITAL MOBILE COMMUNICATION SYSTEMS

DESCRIPTION The UPC8125GR is a Silicon MMIC manufactured with the NESAT IIITM silicon bipolar process. The IC consists of a 1.8 - 2.0 GHz upconverter with AGC function and a 220 - 270 MHz IQ modulator. The device operates over a wide 2.7 - 5.5 V supply voltage range and features a power save func

文件：214.57 Kbytes 页数：5 Pages

NEC

瑞萨

UP CONVERTER WITH AGC FUNCTION QUADRATURE MODULATOR IC FOR DIGITAL MOBILE COMMUNICATION SYSTEMS

DESCRIPTION The µPC8129GR is a silicon monolithic integrated circuit designed as indirect quadrature modulator for digital mobile communication systems. This modulator consists of 0.8 GHz to 1.9 GHz up-converter and 100 MHz to 400 MHz quadrature modulator which are packaged in 20 pin SSOP. The de

文件：587.72 Kbytes 页数：3 Pages

NEC

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