Description

The FAN53541 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 FAN53541 is capable of delivering 5 A at over 90 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 2.4 MHz, which reduces the value of the external components to 470 nH for the output inductor and 20 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

■ 2.4 MHz Fixed-Frequency Operation

■ Best-in-Class Load Transient Response

■ 5 A Output Current Capability

■ 2.7 V to 5.5 V Input Voltage Range

■ Adjustable Output Voltage: 0.8 V to 90 of VIN

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

■ 50 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

■ No External Compensation Required

■ 20-Bump WLCSP

Applications

■ Set-Top Box

■ Hard Disk Drive

■ Communications Cards

■ DSP Power

FAN53541屬于集成電路（IC） > 穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器。安森美半導(dǎo)體公司制造生產(chǎn)的FAN53541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。