描述 Description

The MAX3864xA/B are nanoPower family of ultra-low 330nA quiescent current buck (step-down) DC-DC converters operating from 1.8V to 5.5V input voltage and supporting load currents of up to 175mA, 350mA, 700mA with peak efficiencies of 96%. While in shutdown, there is only 5nA of shutdown current. The devices offer ultra-low quiescent current, small total solution size, and high efficiency throughout the load range. The MAX3864xA/B are ideal for battery applications where long battery life is a must.
The MAX3864xA/B family utilizes a unique control scheme that allows ultra-low quiescent current and high efficiency over a wide output current range. MAX38642 excludes active discharge resistor in shutdown which allows the output to be regulated or held high by another source or by the charged output capacitor.
The MAX3864xA/B devices are offered in a space-saving 1.42mm x 0.89mm 6-pin wafer-level package (WLP) (2 x 3 bumps, 0.4mm pitch), as well as a 2mm x 2mm, 6-pin μDFN package. All parts are specified from -40°C to +85°C.

特性 Features

? 延長電池壽命
? 330nA超低靜態(tài)電流
? 5nA關斷電流
? 96%峰值效率，以及10μA時的效率高于88%
? 使用簡單 — 符合常見操作
? 輸入電壓范圍：1.8V至5.5V
? 可編程VOUT：0.5V至5V
? 單電阻可調(diào)節(jié)VOUT：0.7V至3.3V
? 輸出電壓精度：±1.75%
? 負載電流：高達175mA/350mA/700mA
? 在多種用例條件下保護系統(tǒng)
? 關斷模式下具有反向電流保護
? 可選有源放電特性
? 減小尺寸、提高可靠性
? -40°C至+85°C溫度范圍
? 2mm x 2mm 6-pin μDFN封裝
? 1.42mm x 0.89mm、0.4mm焊距、6引腳(2 x 3) WLP封裝

應用 Application

? 便攜式、空間受限消費電子產(chǎn)品
? 單節(jié)鋰離子電池和紐扣電池供電產(chǎn)品
? 便攜式、空間受限消費電子產(chǎn)品
? 有線、無線、工業(yè)產(chǎn)品

簡介

MAX38640A屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由制造生產(chǎn)的MAX38640A穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或將其轉換為不同幅度的輸出電壓的應用。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元件，設備提供的電力會通過該元件。