NCV8877集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器規(guī)格書PDF中文資料

NCV8877屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器。由安森美半導體公司制造生產的NCV8877DC-DC 開關控制器PMIC（電源管理集成電路）DC 到 DC 開關式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓撲結構可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。

The NCV8877 is a Non-Synchronous Boost controller designed to

supply a minimum output voltage during Start-Stop vehicle operation

battery voltage sags. The controller drives an external N-channel

MOSFET. The device uses peak current mode control with internal

slope compensation. The IC incorporates an internal regulator that

supplies charge to the gate driver.

Protection features include, cycle-by-cycle current limiting and

thermal shutdown.

Additional features include low quiescent current sleep mode

operation. The NCV8877 is enabled when the supply voltage drops

below the wake up threshold. Boost Operation is initiated when the

supply voltage drops below the regulation set point.

Features

? Automatic Enable Below Wake Up Threshold Voltage (Factory

Programmable)

? Override Disable Function

? Boost Mode Operation at Regulation Set Point

? 2 Output Accuracy Over Temperature Range

? Peak Current Mode Control with Internal Slope Compensation

? Externally Adjustable Frequency Operation

? Wide Input Voltage Range of 2 V to 40 V, 45 V Load Dump

? Low Quiescent Current in Sleep Mode (<12 A Typical)

? Cycle?by?Cycle Current Limit Protection

? Hiccup?Mode Overcurrent Protection (OCP)

? Thermal Shutdown (TSD)

? This is a Pb?Free Device

? NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC?Q100

Typical Applications

? Applications Requiring Regulated Voltage through Cranking and

Start?Stop Operation