RTQ2522B中文资料带有软启动的超低压差 2A 线性稳压器数据手册Richtek规格书

描述 Description

The RTQ2522A/B is a very low dropout linear regulator which operates from input voltage as low as 0.8V. The device is capable of supplying 2A of output current with a typical dropout voltage of only 90mV. A VBIAS supply is required to run the internal reference and LDO circuitry while output current comes directly from the VIN supply for high efficiency regulation. User-programmable soft-start limits the input inrush current and minimizes stress on the input power. The enable input and power good output allow easy sequencing with external regulators. This complete flexibility provides an easy-to-use robust power management solution for a wide variety of applications.

The RTQ2522A/B is stable with output capacitor greater than or equal to 2.2μF. A precise reference and error amplifier deliver 1% accuracy over load, line and temperature. Overcurrent limit and over-temperature protection are also included. The RTQ2522A/B is available in the WDFN-10L 3x3 and WQFN-20L 5x5 packages. The recommended ambient temperature range is -40°C to 105°C and junction temperature range is -40°C to 125°C.

特性 Features

Ultra low VIN Range: 0.8V to 5.5V

VBIAS Voltage Range: 2.7V to 5.5V

VOUT Voltage Range: 0.8V to 3.6V

100mA Output Current

Low Dropout: 90mV Typical at 2A, VBIAS = 5V

1% Accuracy Over Line/Load/Temperature

PGOOD Indicator for Easy Sequence Control

Programmable Soft-Start Provides Linear Voltage Startup

Stable with Any Output Capacitor ≥ 2.2μF

Overcurrent and Over-Temperature Protection

应用 Application

•PCs, Servers, Modems, and Set-Top-Boxes
•FPGA Applications
•DSP Core and I/O Voltages
•Instrumentation
•Post-Regulation Applications
•Applications With Sequencing Requirements