Preliminary Datasheet

LP3390

LP3390 Version 1.0 Datasheet

NOV.-2013

www.lowpowersemi.com

Page 1 of 8

High Performance, Constant Current Switching for White LED

and Boost Convertor

General Description

LED driver applications. It can drive a string of up to

8 white LED from a 3.3V supply or 3S9P white LED

from a 5V supply in series. To improve efficiency, the

feedback voltage is set to 200mV, which reduces the

power dissipation in the current setting resistor.

LP3390 also has constant-voltage boost applications

and FB voltage is 1250mV. LP3390 implements a

constant frequency 1.2MHz PWM control scheme.

The high frequency PWM operation also saves board

space by reducing external component sizes.

Optimized operation frequency can meet the

requirement of small LC filters value and low

operation current with high efficiency.

Order Information

LP3390 □ □

□

F: Pb-Free

Package Type

QV:SQVF

Pin Configurations

Features



High Efficiency: 95%



1.2MHzFixed-Frequency PWM Operation



Maximum Output Voltage up to 30V



Operating Range : 2.7V to 6V



Shutdown Supply Current:<1uA



Available in SOT23-6 Package



Minimize the External Component.



RoHS Compliant and 100% Lead (Pb)-Free

Applications



WLED Backlight driver



Panel Bias Voltage supply

Typical Application Circuit

Marking Information

Device

Marking

Package

Shipping

LP3390QVF LPS

LP3390

xxxx

QV:SQVF

3K/reel