• 简体中文
• English

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

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 > 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)

MAX1730：典型工作电路 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

数据手册DataSheet

关键参数

技术资料

• Doubler/Inverter Charge Pumps Divide by Two

订购型号