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发布者:微桥PT5127 发布时间:2010-12-3 阅读:3267次    关键字: LDO 微桥 PT5127 PT5128
PT5127-Dual Outputs 200mA High PSRR LDO


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GENERAL DESCRIPTION
 

The PT5127 is a dual channel low-dropout voltage regulator designed for portable and wireless applications that require high PSRR, low quiescent current and excellent line and load transient response. The PT5127 is stable with a small 1µF ceramic capacitor on the output. With its better than 75dB PSRR at 1kHz, the PT5127 is ideal for battery powered systems for delivering low dropout voltage and low quiescent current.

This device can be used for mobile phones and similar battery powered wireless applications. It provides up to 200mA at each channel, from a 2.0V to 5.5V input. The PT5127 consumes less than 0.1µA in shutdown mode. The PT5127 is available in 6 pin SOT23 package. The output voltage is available at 1.8V, 2.5V, 2.8V, 3.3V and 1.5V/3.0V.
 
FEATURES
 

¨          2.0V to 5.5V input range

¨          200mA guaranteed output current (each channel)

¨          High PSRR: 75dB at 1KHz (each channel)

¨          180mV maximum low dropout voltage with 100mA load (each channel)

¨          Low quiescent current: 50uA (Typ.)

¨          Current Limiting and Thermal Protection

¨          -40°C to + 85°C junction temperature for operation
 
APPLICATIONS
 

¨          CDMA/GSM mobile phone

¨          Laptop computers

¨          PDAs/MP3

¨          WLAN and bluetooth appliances

¨          Cordless telephones

¨          Battery powered portable devices
 
TYPICAL APPLICATIONS
 

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