MAX1730 - 50mA、稳压型、降压型电荷泵，用于1.8V或1.9V逻辑电路

MAX1730是Maxim美信半导体公司的一款电荷泵产品，MAX1730是50mA、稳压型、降压型电荷泵，用于1.8V或1.9V逻辑电路，本站介绍了MAX1730的封装应用图解、特点和优点、功能等，并给出了与MAX1730相关的Maxim元器件型号供参考。

MAX1730 - 50mA、稳压型、降压型电荷泵，用于1.8V或1.9V逻辑电路 - 电荷泵 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1730 regulated step-down charge pump generates up to 50mA at fixed output voltages of 1.8V or 1.9V from an input voltage in the 2.7V to 5.5V range. Specifically designed to provide high-efficiency logic supplies in applications that demand a compact design, the MAX1730 employs fractional conversion techniques to provide efficiency exceeding that of a linear regulator.

The MAX1730 operates at up to 2MHz, permitting the use of small 0.22µF flying capacitors while maintaining low 75µA quiescent supply current. Proprietary soft-start circuitry prevents excessive current from being drawn from the supply during startup, making the MAX1730 compatible with higher impedance sources such as alkaline and lithium-ion cells.

The MAX1730 is available in a space-saving 10-pin µMAX® package that is only 1.09mm high and occupies one-half the area of an 8-pin SO.

关键特性

以下关键特性由Maxim美信半导体提供：

> 85% Peak Efficiency

50mA Guaranteed Output Current

Dual-Mode 1.8V or 1.9V Output

±3% Output Voltage Accuracy

Up to 2MHz Operating Frequency

Small 0.22µF Capacitors

No Inductor Required

2.7V to 5.5V Input Voltage Range

Output Disconnects from Input in Shutdown Mode

Small 10-Pin µMAX Package (1.09mm max height)

热门应用

手持式仪表(PDA、掌上电脑)

低电压逻辑电源

PC卡

PDA

无线手机

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