LX8213中文资料300mA Low Noise CMOS LDO Regulator数据手册Microchip规格书

描述 Description

The LX8213 LDO regulator is a positive voltage regulator ICs using CMOS technology. The device provides a compact and cost effective solution featuring low power consumption over a wide supply voltage range, high output voltage accuracy, low dropout, excellent line and load regulation, fast transient response, and low noise. The LX8213 operates over a wide input voltage range of 2.5V to 6V, and consumes only 60uA typical quiescent current at no load and a low 0.1uA shutdown current. Output voltage options include fixed 1.2V, 3.3V, or an adjustable output voltage which may be set from 1.2V to 5.5V. The LDO delivers up to 300mA of output current, with a foldback current limit of approximately 400mA. At 300mA load, dropout voltage measures only 170mV for a 3.3V output. Tight load and line regulation is achieved over the full output current and supply range. The high bandwidth control loop provides fast transient response to reduce output voltage deviation using low cost external ceramic capacitors in the 1uF range.The LX8213 also exhibits low output noise with only 60uVRMS over a 100kHz bandwidth. Power supply rejection exceeds 65dB at 100Hz. Other features of LX8213 include an active low shutdown input with a 3MΩ internal pull-down for low cost power sequencing, internal soft-start circuitry to prevent inrush current, short circuit current limit, and thermal overload protection. The LX8213 operates over -40˚C to +85˚C ambient temperature range and is available in a tiny 5 pin SOT-23 ROHS compliant package.

特性 Features

2.5V to 6V Wide Input Voltage Range
Fixed Output at 1.2V or 3.3V
Adjustable Output Voltage Range from 1.2V to 5.5V
Low Quiescent Current of Typical 60uA
Low Dropout Voltage of Typical 170mV at 3.3V 300mA
Stable with Low ESR 1uF Input/Output Bypass Ceramic Capacitors
Ultra Low Shutdown Current of Typical 0.1uA
Low Output Noise of Typical 60uVRMS at VOUT=1.2V
Fast Transient Response
Shutdown Control Input ? Foldback Current Limit
50mA Short Circuit Limit
Over Temperature Protection
Standard Package SOT-23
RoHS Compliant

简介

LX8213属于集成电路（IC）的稳压器-线性。由Microchip制造生产的LX8213稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。