NCV8843中文资料降压转换器，1.5 A，340 kHz，具有同步功能数据手册ONSEMI规格书

描述 Description

The NCV8843 is a 1.5 A buck regulator IC operating at a fixed frequency of 340 kHz. The device employs the V2™ control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation. The NCV8842 accommodates input voltages from 4.0 V to 40 V and contains synchronization circuitry. The on-chip NPN transistor is capable of providing a minimum of 1.5 A of output current and is biased by an external boost capacitor to ensure saturation, thus minimizing on-chip power dissipation. Protection circuitry includes thermal shutdown, cycle-by-cycle current limiting and frequency foldback short-circuit protection.

特性 Features

• V2™ Control Architecture
• Ultra-fast Transient Response, Improved Regulation and Simplified Design
• 2.0% Error Amp Reference Voltage Tolerance
• Tight Output Regulation
• Cycle-by-Cycle Current Limiting
• Limits Switch and Inductor Current
• Switch Frequency Decrease of 4:1 in Short Circuit
• Reduces Short Circuit Power Dissipation
• Bootstrapped Operation (BOOST)
• Increased Efficiency and Minimized On-Chip Power Dissipation
• Synchronization to External Clock (SYNC)
• Synchronization to External Clock (SYNC)
• 1.0 A Shutdown Quiescent Current
• Minimize Current Consumption when SHDNB is Asserted
• Thermal Shutdown
• Protect IC from Over-Temperature
• Soft-Start
• Decrease Inrush Current and Minimize Output Over-shoot During Start-Up
• Pb-Free Packages are Available

应用 Application

• Automotive
• Industrial
• Dc-dc power supplies

简介

NCV8843属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的NCV8843稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。