LT3489 - 2MHz Boost DC/DC Converter with 2.5A Switch and Soft-Start
Datasheet Documentation
Datasheet
Design Note
Reliability Data
cad_symbol
ltspice
Overview

Features

Typical Application

LT3489 Typical Application
LT3489 Typical Application

Description

The LT3489 is a fixed frequency step-up DC/DC converter containing an internal 2.5A, 40V switch. The LT3489 is ideal for large TFT-LCD panel power supplies. The LT3489 switches at 2MHz, allowing the use of tiny, low profile inductors and low value ceramic capacitors. Loop compensation can be either internal or external, giving the user flexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during start-up.

The 8-lead MS8E package and high switching frequency ensure a low profile overall solution less than 1.1mm high.

Packaging

MS-8

LT3489 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LT3489EMS8E#PBF MSOP 8 E $2.79 $1.95
LT3489EMS8E#TRPBF MSOP 8 E $2.01
LT3489EMS8E MSOP 8 E $5.58 $3.90
LT3489EMS8E#TR MSOP 8 E $4.02
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.


Part Number Description Price Documentation
DC925A LT3489EMS8E Demo Board | Triple Output, Boost Plus 23V Charge Pump & -8V Inverting Charge Pump $100.00