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

? Extends Battery Life
- 330nA Ultra-Low Quiescent Supply Current
- 5nA Shutdown Current
- 96% Peak Efficiency and Over 88% at 10μA
? Easy to Use – Addresses Popular Operation
- 1.8V to 5.5V Input Range
- Preprogrammed VOUT from 0.5V to 5V
- Single Resistor Adjustable VOUT from 0.7V to 3.3V
- ±1.75% Output Voltage Accuracy
- Up to 175mA/350mA/700mA Load Current
? Protects System in Multiple Use Cases
- Reverse-Current Blocking in Shutdown
- Optional Active Discharge Feature
? Reduces Size and Increases Reliability
- -40°C to +85°C Temperature Range
- 2mm x 2mm 6-pin μDFN Package
- 1.42mm x 0.89mm, 0.4mm Pitch 6-pin (2 x 3) WLP

簡介

MAX38642A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MAX38642A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。