描述 Description

The FAN53763 is a Super Low Iq, step-down switching voltage regulator, that delivers a fixed output from an input voltage supply of 2.3V to 5.5 V. Using a proprietary architecture with synchronous rectification, the FAN53763 is capable of delivering a peak efficiency of 93%, while maintaining efficiency over 90% at load currents as low as 1 mA.

The regulator operates with 0402 and 0603 input and output capacitors, respectively,which reduces the total solution size to 5.5mm2. At moderate and light load, Pulse Frequency Modulation (PFM) is used to operate the device with a low quiescent current. Even with such a low quiescent current, the part exhibits excellent transient response during load swings. In Shutdown Mode, the supply current drops to 100nA, reducing power consumption. The Mode pin allows the part to be in a Super Low IQ (SLIQ) mode with a typical quiescent current of 2 μA

The part enters PWM mode when load current exceeds 50 mA typically. At light load operation in Auto Mode, the device enters PFM mode when load current is below 20 mA typically. PFM mode reduces switching frequency as well as battery current draw, which yields high efficiency.
When Mode pin goes High, the part will transition from SLIQ Mode into normal PFM mode within 10μs.

In SLIQ Mode the device acts in a modified PFM mode with a super low Iq state. The part draws 2uA with no load. The part enters SLIQ Mode when the Mode pin is set to logic \"LOW\". Before pulling the Mode Pin Low, the load current should drop below 1mA to maintain output voltage regulation in SLIQ mode. The maximum load current in SLIQ Mode that the device can support is 1mA. If load current exceeds 1mA, it is recommended to place part in Auto Mode by pulling Mode pin High so that the device can support more current.

特性 Features

? 2μA Typical Quiescent Current
? 5.5mm2 total solution size
? 1.5 A Output Current Capability
? 0.6V to 1.8V Fixed Output Voltage
? 2.3V to 5.5V Input Voltage Range
? Best-in-Class Load Transient Response
? Best-in-Class Efficiency with Sub 1mA Output Currents
? Internal Soft-Start Limits Battery Current Below 150mA to avoid Brown-out Scenarios
? Protection Faults (UVLO, OCP and OTP)
? Thermal Shutdown and Overload Protection

應(yīng)用 Application

? Wearables
? Smart Watch
? Health Monitoring
? Sensor Drive
? Energy Harvesting
? Utility and Safety Modules
? RF Modules
? Wearables
? Smart Watch
? Cellular Phones, Smart Phones, and PDAs
? Portable Media Players

簡介

FAN53763屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由制造生產(chǎn)的FAN53763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(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”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(huì)通過該元件。