MIC2205数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The MIC2205 is a high efficiency 2MHz PWM synchronous buck (step-down) regulator that features a LowQ® size, and high efficiency solution for portable power applications.In PWM mode, the MIC2205 operates with a constant frequency 2MHz PWM control.  Under light load conditions, such as in system sleep or standby modes, the PWM switching operation can be disabled to reduce switching losses. In this light load LowQ® mode, the LDO maintains the output voltage and draws only 18µA of quiescent current. The LDO mode of operation saves battery life while not introducing spurious noise and high ripple as experienced with pulse skipping or bursting mode regulators.The MIC2205 operates from 2.7V to 5.5V input and features internal power MOSFETs that can supply up to 600mA output current in PWM mode. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

特性 Features

• 2.7V to 5.5V supply voltage
• 18µA quiescent current
• Low noise, 75mVrms
• Output current to 600mA
• >95% efficiency
• 100% maximum duty cycle
• Fixed output voltage option available
• Ultra-fast transient response
• Stable with 1µF ceramic output capacitor
• Fully integrated MOSFET switches
• 40ºC to 125ºC junction temperature range
• Thermal shutdown and current limit protection

简介

MIC2205属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MIC2205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。