PT5108是一款应用于无线设备和便携式设备的高性能小尺寸低压差线性稳压器，使用1uF+/-30%的陶瓷电容或胆电容做输出电容，
PT5108可最大限度节省电路板空间，适用于电池供电的系统，
PT5108具有超低噪声、高纹波抑制比、超低压差及低功耗的特点，
PT5108在0.5V压差下1KHz的电源纹波抑制比可达75dB。
PT5108在2.5至5.5V工作电压下可提供300mA的输出电流，启动时间小于200uS，
PT5108在关断模式下仅消耗电流0.1uA，内部集成过热和过流保护。
PT5108概述
The
PT5108 is a low-dropout voltage regulator designed for portable applications that require both low noise performance and board space. Its PSRR at 1kHz is better than 70dB. The PT 5108’s is ideal for battery powered systems for delivering low dropout voltage and low quiescent current. An optional external bypass capacitor reduces the output noise and increases PSRR.
The device can be used for mobile phones and similar battery powered wireless applications. It provides up to 500mA, from a 2.5V to 5.5V input. The
PT5108 consumes less than 0.1µA in shutdown mode and has fast turn-on time less than 150µs. The
PT5108 is available in a 5 pin SOT-23 package. Selected performances are specified for − 40°C to + 85°C temperature range. The output voltage is available in the range of 1.5~2.0V, 2.5~3.3V, 4.7~5.0V.
PT5108特性
2.5V to 5.5V input range
72dB PSRR @1kHz, Vin = Vout + 1V
< 0.1uA quiescent current at shutdown mode
Fast turn on time: 150us (typical)
290mV maximum dropout voltage with 400mA load
Thermal shutdown and short-circuit current limit
1.5V, 1.6V, 1.7V, 1.8V, 1.9V, 2.0V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 4.7V, 4.8V, 4.9V and 5.0V typical output standard
Miniature SOT-23-5 package
