FAN5354集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

FAN5354屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由安森美半導(dǎo)體公司制造生產(chǎn)的FAN5354穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(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”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會通過該元件。

Description

The FAN5354 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2.7 V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN5354 is capable of delivering 3 A at over 85 efficiency, while maintaining a very high efficiency of over 80 at load currents as low as 2 mA. The regulator operates at a nominal fixed frequency of 3 MHz, which reduces the value of the external components to 470 nH for the output inductor and 10 μF for the output capacitor. Additional output capacitance can be added to improve regulation during load transients without affecting stability and inductance up to 1.2 μH may be used with additional output capacitance.

Features

■ 3 MHz Fixed-Frequency Operation

■ Best-in-Class Load Transient

■ 3 A Output Current Capability

■ 2.7 V to 5.5 V Input Voltage Range

■ Adjustable Output Voltage: 0.8 to 2.0 V

■ PFM Mode for High Efficiency in Light Load (Forced PWM Available on MODE Pin)

■ Minimum PFM Frequency Avoids Audible Noise

■ 270 μA Typical Quiescent Current in PFM Mode

■ External Frequency Synchronization

■ Low Ripple Light-Load PFM Mode with Forced PWM Control

■ Power Good Output

■ Internal Soft-Start

■ Input Under-Voltage Lockout (UVLO)

■ Thermal Shutdown and Overload Protection

■ 12-Lead 3x3.5 mm MLP

Applications

■ Set-Top Box

■ Hard Disk Drive

■ Communications Cards

■ DSP Power