AAT2215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 AAT2215 SwitchReg™ is a high current, synchronous step-up converter with a programmable peak NMOS current limit. It is ideal to prevent the input current from overloading the system power in PC Card GSM/GPRS/3G and WiMax modem card applications. The AAT2215's internal compensation is optimized for the large bulk tantalum output capacitors needed to support the output voltage during large load pulses.
The output voltage may be programmed from 3.0V to 5.5V by external resistor divider. Light load switching frequency modulation and low quiescent current maintain high efficiency performance for light load mode conditions.
Two current limits are designed into the AAT2215. One is the low-side power MOSFET programmable peak current limit, which works when the device is in step-up regulation state. An external resistor is used to program the current limit from 600mA to 4.0A. The other is the highside current limit, which operates in a linear mode to limit inrush current to 750mA when the output charges up to the input voltage. The AAT2215 includes internal over-voltage protection and a system ready signal.
The AAT2215 is available in a Pb-free, 3mm x 3mm, 12-pin TDFN package (TDFN33-12) rated from -40°C to +85°C.

特性 Features

·2.4V to VOUT + 0.25V Input Voltage Range
·Adjustable 3.0V to 5.5V Output Voltage
·Internal Compensation
·600kHz Switching Frequency
·Programmable Peak NMOS Current Limit (0.6A to 4.0A)
·Synchronous P-Channel MOSFET
·True Load Disconnect in Shutdown
·Reverse Current Block When Enabled
·Start-Up Inrush Current Limit (0.75A) and Overload Current Limit (3A)
·Up to 95% Efficiency
·Active-Low Power Ready Indicator (RDY)
·Very Low 55μA No-Load Operating Current
·Less than 1μA Shutdown Current
·6V Output Over-Voltage Protection (OVP)
·Thermal Shutdown Protection (TSHDN)
·Short Circuit Protection
·Low-Profile TDFN33-12 Package

简介

AAT2215属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的AAT2215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。