描述 Description

The NCV890100 is a fixed-frequency, monolithic, Buck switching regulator intended for Automotive, battery-connected applications that must operate with up to a 36V input supply. The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV890100 is capable of converting the typical 4.5 V to 18 V automotive input voltage range to outputs as low as 3.3 V at a constant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures.The NCV890100 also provides several protection features expected in Automotive power supply systems such as current limit, short-circuit protection and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and an all-ceramic output filter capacitor - forming a space-efficient switching regulator solution.

特性 Features

? 2-MHz Free-Running Switching Frequency
? Enables the use of small size, low cost inductor and EMC filter
? Internal N-Channel Power Switch
? Low VIN Operation Down to 4.5 V
? High VIN Operation Up to 36 V
? Withstands Load Dumps to 40 V
? Logic level Enable Input Can be Directly Tied to Battery
? 1.4 A (min) Cycle-by-Cycle Peak Current Limit
? Short-Circuit Protection enhanced by Frequency Foldback
? ±1.75% Output Voltage Tolerance
? Output Voltage Adjustable Down to 0.8 V
? 1.4 ms Internal Soft-Start
? Thermal Shutdown (TSD)
? Low Shutdown Current
? NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls
? Wettable Flanks DFN
? This is a Pb-Free Device

應(yīng)用 Application

? Audio
? Infotainment
? Safety - Vision Systems
? Dashboards
? Automotive

簡(jiǎn)介

NCV890100屬于集成電路（IC）的DCDC開(kāi)關(guān)穩(wěn)壓器。由制造生產(chǎn)的NCV890100穩(wěn)壓器 - DC-DC 開(kāi)關(guān)穩(wěn)壓器DC-DC 開(kāi)關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級(jí)設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”P(pán)MIC 的類似產(chǎn)品的區(qū)別在于集成了主開(kāi)關(guān)元件，設(shè)備提供的電力會(huì)通過(guò)該元件。