LP3986-05

Oct.-2014

www.lowpowersemi.com

Page 1 of 6

Preliminary Datasheet

LP3986

300mA,Ultra-low Noise LDO Regulator

General Description

The LP3986 is designed for portable applications with

demanding performance and space requirements. The

LP3986 performance is optimized for battery-powered

systems to deliver ultra low noise and low quiescent

current. Regulator ground current increases only

slightly in dropout, further prolonging the battery life.

The LP3986 also works with low-ESR ceramic

capacitors, reducing the amount of board space

wireless devices. The other features include ultra low

dropout voltage, high output accuracy, current limiting

protection, and high ripple rejection ratio. Available in

the 3-lead of SOT-23 packages

Order Information

LP3986 □ □ □ □ □

F: Pb-Free

Package Type

B3: SOT23

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- 6V Input Voltage Range



Low Dropout : 220mV @ 300mA



Ultra-Fast Response in Line/Load Transient



Current Limiting and Thermal Shutdown

Protection

Applications



PMP/PDA/MP3 players



Cellular and Mobile phone



RF Module



Sensor Module

Typical Application Circuit

Marking Information

Device

Marking

Package

Shipping

LP3986B3F

SOT23-3

3K/REEL

VIN

2.2uF

2.2uF

LP3986

VIN

OUT

GND

Vout