Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

General Description The MAX1519/MAX1545 are dual-phase, Quick-PWM?, step-down controllers for desktop and mobile Pentium? 4 (P4) CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. Th

文件：826.6 Kbytes 頁數(shù)：43 Pages

MAXIM

美信

雙相、Quick-PWM控制器，用于可編程CPU核電源

MAX1519/MAX1545是雙相、Quick-PWM?降壓控制器，適用于臺式機或移動Pentium? 4 (P4) CPU核的供電。雙相工作降低了對輸入電流紋波的要求、減小了輸出電壓紋波，同時也簡化了外部元件的選擇和線路板布局。Quick-PWM控制技術(shù)提供快速瞬態(tài)響應(yīng)，加快負(fù)載電流的躍變。MAX1519/MAX1545采用增益和失調(diào)可調(diào)的有源電壓定位技術(shù)，降低了功率損耗和對降壓器輸出電容的要求。\n MAX1519/MAX1545適用于兩種不同類型的筆記本CPU核應(yīng)用：直接由電池降壓或由5V系統(tǒng)電源降壓得到核電壓。單級轉(zhuǎn)換方式允許這些器件直接對高電壓電池組進行降壓，可提供極高的效率。兩級 \n? 雙相、Quick-PWM控制器 \n? 在整個輸入范圍、負(fù)載變化范圍和工作溫度范圍內(nèi)，提供±0.75% VOUT精度(1.3V) \n? 增益和失調(diào)可調(diào)節(jié)的有源電壓定位 \n? 5位板上DAC \n? 移動：輸出電壓范圍0.60V至1.75V \n? 臺式機：輸出電壓范圍1.10V至1.85V \n? 100kHz/200kHz/300kHz/550kHz開關(guān)頻率選擇 \n? 4V至28V電池輸入電壓范圍 \n? 可調(diào)節(jié)的擺率控制 \n? 驅(qū)動大電流同步整流MOSFET \n? 輸出電壓過壓保護(僅MAX1545) \n? 欠壓保護和過熱保護 \n? 順序上電和定時 \n? 可;

ADI

亞德諾

Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

General Description The MAX1519/MAX1545 are dual-phase, Quick-PWM?, step-down controllers for desktop and mobile Pentium? 4 (P4) CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. Th

文件：826.6 Kbytes 頁數(shù)：43 Pages

MAXIM

美信

DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER

DUAL SERIAL INPUT PLL FREQUENCY SYNTHESIZER WITH 600MHz PRESCALER The Fujitsu MB1519 is a 600MHz dual serial input PLL (Phase Locked) frequency synthesizer designed for cellular telephone and cordless telephone applications. The MB1519 has two PLL circuits on a single chip: one for transmit and

文件：133.96 Kbytes 頁數(shù)：16 Pages

FUJITSU

富士通

PRINTED CIRCUIT BOARD TERMINAL BLOCKS

PRINTED CIRCUIT BOARD TERMINAL BLOCKS Altech is pleased to announce a new, more extensive printed circuit board terminal block line. This line offers the standard single and double level fixed and pluggable terminal blocks in metric and US pin spacings. However, this product line goes beyond our

文件：1.23198 Mbytes 頁數(shù)：27 Pages

ALTECH

1x, 1.5x, 2x High Efficiency Charge Pump 4 White LED Driver

DESCRIPTION The MP1519 is a fully automatic driver for powering four white LEDs, with up to 4V forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor

文件：211.75 Kbytes 頁數(shù)：8 Pages

MPS

美國芯源