RTQ2532A中文资料6.5V, 2A, 超低噪声、超低压差线性稳压器数据手册Richtek规格书

描述 Description

The RTQ2532A is a high-current (2A), low-noise (6.8μVRMS), high accuracy (1% over line, load, and temperature), low-dropout linear regulator (LDO) capable of sourcing 2A with extremely low dropout (max. 125mV). The device output voltage is pin-selectable (up to 3.95V) using a PCB layout without the need of external resistors, thus reducing overall component count. Designers can achieve higher output voltage with the use of external resistor divider. The device supports single input supply voltage as low to 1.1V that makes it easy to use.The low noise, high PSRR and high output current capability makes the RTQ2532A ideal to power noise-sensitive devices such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. With very high accuracy, remote sensing, and soft-start capabilities to reduce inrush current, the RTQ2532A is ideal for powering digital loads such as FPGAs, DSPs, and ASICs.The external enable control and power good indicator function makes the control sequence easier. The output noise immunity is enhanced by adding external bypass capacitor on the NR/SS pin. The device is fully specified over the temperature range of TJ = -40°C to 125°C and is offered in a VQFN-20L 5x5 package.

特性 Features

Input Voltage Range: 1.1V to 6.5V
Two Output Voltage Modes ►0.8V to 5.5V (Set by a Resistive Divider) ► 0.8V to 3.95V (Set via PCB Layout, No External Resistor Required)
Accurate Output Voltage Accuracy (1%) Over Line, Load and Temperature
High PSRR: 40dB at 500kHz
Noise Immunity ► 6.8μVRMS at 0.8V Output ► 10μVRMS at 3.3V Output
Dropout Voltage: 125mV at 2A
Enable Control
Programmable Soft-Start Output
Stable with a 22μF or Larger Ceramic Output Capacitor
Support Power-Good Indicator Function

应用 Application

•Portable Electronic Devices
•Wireless Infrastructures: SerDes, FPGA, DSP
•RF, IF Components: VCO, ADC, DAC, LVDS