相关商品： LP3986

General Description
The TP2081 is designed for portable RF and wireless applications with demanding performance and space requirements. The TP2081 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The TP2081 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The TP2081 consumes less than 0.01μA in shutdown mode and has fast turn-on time less than 50μs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SOT-23-5 packages.

FEATURES

*  Ultra  Low  Noise  for  RF  Application

*  2.0V-6.5V  Input  Voltage  Range

*  300mA  Output  Current  ,  500mA  Peak  Current

 

*  Quick  Start-Up  (Typically  50us)

*  <0.01μA  Standby  Current  When  Shutdown

*  Low  Dropout  :  220mV  @  300mA

*  High  PSSR  :  -76dB  at  1KHz

*  TTL-Logic-Controlled  Shutdown  Input

*  Low  Temperature  Coefficient

*  Current  Limiting  Protection

*  Thermal  Shutdown  Protection

* 4.7uF to 10uF Capacitor  Required  for  Stability

*  Ultra-Fast  Response  in  Line/Load  transient

*  RoHS  Compliant  and  100%  Lead  (Pb)-Free

 

Applications

 

*  CDMA/GSM  Cellular  Handsets

*  Battery-Powered  Equipment

*  Laptop,  Palmtops,  Notebook  Computers

*  Hand-Held  Instruments

 

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