LP3992-05

May.-2017

www.lowpowersemi.com

Page 1 of 9

Preliminary Datasheet

LP3992

300mA,Ultra-low noise, Small Package

Ultra-Fast CMOS LDO Regulator

General Description

The LP3992 is designed for portable RF and wireless

applications with demanding performance and space

requirements. The LP3992 performance is optimized

for battery-powered systems to deliver ultra low noise

and low quiescent current. The LP3992 also works

with low-ESR ceramic capacitors, reducing the amount

of board space necessary for power applications,

critical in hand-held wireless devices. The LP3992

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

and TSOT23-5 packages.

Order Information

LP3992 □ □ □ □ □

F: Pb-Free

Package Type

B3: SOT23-3

B5: SOT23-5

J5: TSOT23-5

Output Type

12: 1.2V

15: 1.5V

18: 1.8V

25: 2.5V

28: 2.8V

30: 3.0V

33: 3.3V

36: 3.6V

50: 5.0V

Features



Ultra-Low-Noise for RF Application



2.5V- 5.5V Input Voltage Range



Low Dropout : 220mV @ 300mA



1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6V and

5V Fixed



300mA Output Current



High PSSR:-76dB at 1KHz



< 0.01uA Standby Current When Shutdown



Available in SOT23-5 and TSOT23-5 Package



TTL-Logic-Controlled Shutdown Input



Ultra-Fast Response in Line/Load transient



Current Limiting and Thermal Shutdown

Protection



Quick start-up (typically 50uS)

Applications



Portable Media Players/MP3 players



Cellular and Smart mobile phone



LCD



DSC Sensor



Wireless Card

Typical Application Circuit