MIC2145中文资料400kHz 0.9A Isw Boost Regulator数据手册Microchip规格书

描述 Description

The MIC2145 is a small size boost switching regulator that can provide over 2.5W of output power. The input voltage range is between 2.4V to 16V, making the device suitable for one-cell Li-Ion and 3- to 4-cell alkaline/NiCad/NiMH applications. The output voltage of the MIC2145 can be adjusted up to 16V.The MIC2145 is well suited for portable, space-sensitive applications. Its typical 450kHz operation allows small surface mount external components to be used. The MIC2145 has a low quiescent current of 200µA, and a typical shutdown current of 0.5µA. The MIC2145 is capable of high efficiencies in a small board area.The MIC2145 features a low-on resistance internal switch that allows it to provide over 2.5W of output power. The peak switch current can be programmed through an external resistor. This allows the user to set the peak switch current at the level where maximum efficiency occurs. It also allows the user to further optimize for efficiency and inductor size by setting the peak current below the level of inductor saturation.The MIC2145 is available in an MSOP-8 package with an ambient operating temperature range from -40°C to +85°C.

特性 Features

• 2.4V to 16V input voltage
• Output adjustable to 16V
• Programmable peak current limit
• Soft start
• Up to 450kHz switching frequency
• 0.5µA shutdown current
• 200µA quiescent current
• Capable of 5V/500mA output with 3.3V input
• Achieves over 85% efficiency
• Implements low power boost, SEPIC, and flyback topologies
• MSOP-8 package

简介

MIC2145属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MIC2145稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。