MAX679中文资料稳压型、3.3V电荷泵数据手册ADI规格书

描述 Description

The MAX679 step-up, regulated charge pump generates a 3.3V ±4% output voltage from a 1.8V to 3.6V input voltage (two alkaline, NiCd, or NiMH; or one Lithium-Ion battery). Output current is 20mA (min) from a 2.0V input. Only three external capacitors are needed to build a complete DC-DC converter.
The MAX679's switching frequency is pin selectable at 330kHz or 1MHz to allow trade-offs between lowest supply current and smallest-size capacitors. The logic shutdown function reduces the supply current to 5µA (max) and disconnects the load from the input. Special soft-start circuitry prevents excessive current from being drawn from the battery during start-up. This DC-DC converter requires no inductors and has low EMI. It is available in the ultra-small µMAX® package, which is only 1.11mm high and half the area of an 8-pin SO.

特性 Features

• Regulated 3.3V ±4% Output
• Ultra-Small: 1.1mm-High, 8-Pin µMAX Package
• No Inductors Required
• Up to 1MHz Operation (small external components)
• Fits into 0.05 in.²
• Up to 85% Efficiency
• 1.8V to 3.6V Input Voltage Range
• 50µA Quiescent Supply Current
• 1µA Shutdown Current
• Only three small capacitors required

应用 Application

• 备用电池升压转换器
• 电池供电应用
• 微型设备
• 转换器
• 双向寻呼

简介

MAX679属于开发板套件编程器的评估板-线性稳压器。由制造生产的MAX679评估板 - 线性稳压器线性稳压器评估板是装有元器件的电路板，用于提供特定线性稳压器或器件的工作实例。每个 IC 的通道类型有单通道、双通道、三通道和四通道，稳压器类型包括负可调、负固定、正可调、正固定、正负可调、正固定/可调。电压输出范围为 -15V 至 56V，电流输出范围为 10mA 至 5A。