高纹波抑制比 500mA线性稳压器,AC-DC转换控制器 PT5108

 PT5108_DS Rev EN_2.0 PT5108 GENERAL DESCRIPTION
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The PT5108 is a low-dropout voltage regulator designed for portable and wireless applications that require high PSRR, low quies cent current and excellent line and load transient response. The PT5108 is designed to work with small 1μF input and output ceramic capacitors. The quiescent current is as low as 28uA. With its better than 63dB PSRR at 10kHz, the PT5108 is ideal for battery powered systems for delivering low dropout voltage and low quiescent current.   The device can be used for mobile phones and similar battery powered wireless applications. It provides up to 300mA, from a 2.5V to 5.5V input. The PT5108 consumes less than 0.1μA in shutdown mode. The PT5108 is available in 5 pin SOT23packages. The output standards of 1.8V, 2.5V, 2.8V, 3.0V, 3.3V are available.   FEATURES z 2.5V to 5.5V input range z 300mA guaranteed output current   z 65dB PSRR @1KHz, V IN = V OUT + 1V 64dB PSRR @10KHz, V IN = V OUT + 1V z Low quiescent curr ent: 28uA (Typ.) z 180mV maximum dropout voltage with 100mA load z < 1uA quiescent current at shutdown mode z Fast turn on time: 72us (typical) z Thermal shutdown and short-circuit current limit z 1.8V, 2.5V, 2.8V, 3.0V, 3.3V typical output standard z Miniature SOT-23-5 package z RoHS compliant APPLICATION z CDMA/GSM mobile phone z Handless telephone z WLAN and Bluetooth appliances z PDAS/MP3 handsets z Battery powered portable devices    
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