Single-Channel Output

LP3983H-Single Channel
600Output Current(mA):
AdjustableOutput Voltage(V):
90Quiescent Current(uA):
2.2-6.0Input Voltage(V):
280@400Dropout Voltage(mV@mA)(typ):
Shutdown,High PSRR,Large CurrentSpecial Features:

600mA,Ultra-low noise, Small Package
                                          Ultra-Fast CMOS LDO Regulator

General Description

The LP3983H is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3983H 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 LP3983H also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LP3983H 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. It is available in the 5-lead of SOT23-5 packages.


Portable Media Players/MP3 players
Cellular and Smart mobile phone
DSC Sensor
Wireless Card



Ultra-Low-Noise for RF Application
2V- 6V Input Voltage Range
Low Dropout : 300mV @ 400mA
600mA Output Current, 750mA Peak Current
High PSRR: -68dB at 1KHz
< 0.01uA Standby Current When Shutdown
Available in SOT23-5/6 Package
TTL-Logic-Controlled Shutdown Input
Ultra-Fast Response in Line/Load transient
Current Limiting and Thermal Shutdown Protection
Quick start-up (typically 20uS)

Marking Information

Please see specification. 
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