LTC3524

RECOMMENDED FOR NEW DESIGNS

LTC3524

Adjustable TFT Bias Supply with WLED Driver

RECOMMENDED FOR NEW DESIGNS

+5V, –7.5V, +12.5V, 8 LED Power Supply slide

LCD Bias and LED Efﬁciency VIN = 3.6V, VOUT = 5V, 8 LEDs slide

LCD Bias and LED Efﬁciency VIN = 3.6V, VOUT = 5V, 8 LEDs

Not the part you were looking for?

Go to Product Selection Table

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $2.72

Features

Generates Three Adjustable, Low Noise Rails for Small/Medium TFT Displays
Drives Up to Ten White LEDs
LED Dimming and Open-Circuit Protection
Controlled Power-Up/Power-Down Sequencing
1.5MHz Fixed Frequency, Low Noise Operation
V_IN Range 2.5V to 6V, V_OUT Range 3V to 6V
TFT Supply Efficiency Up to 90%
LED Supply Efficiency Up to 78%
Two independently Enabled LED Strings
200 to 1 True Color PWM^™ Dimming
Tiny External Solution
24-Lead QFN Package (4mm × 4mm × 0.75mm)

Additional Details

The LTC3524 is an integrated BIAS and white LED power converter solution for small/medium-sized polysilicon thin ﬁlm transistor (TFT) liquid crystal (LCD) display panels. The device operates from a single Lithium-Ion/polymer battery or any voltage source between 2.5V and 6V.

A 1.5MHz synchronous boost converter generates a programmable low noise, high efficiency 25mA TFT supply of up to 6.0V. Regulated, low ripple charge pumps are used to generate up to +20V and –20V at 2mA. Output sequencing is internally controlled to insure proper initialization and rapid discharge of the LCD panel in shutdown.

A second 1.5MHz boost converter powers one or two LED strings with up to ﬁve series elements each. LED current and display brightness can be controlled over a wide range using analog or digital means up to 25mA.

The LTC3524 is offered in the 4mm × 4mm 24-pin QFN package, minimizing the total solution footprint.

Applications

PDAs, Palmtop Computers
Digital Still and Video Cameras
Handheld GPS
Portable Instrument Displays
Portable Media Players

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $2.72

Technical Documents 4

LTC3524: Adjustable TFT Bias Supply with WLED Driver Data Sheet 02/11/2008

R419 Reliability Data 03/22/2018

DC1121A - Demo Manual 09/24/2009

DN440 - Versatile TFT LCD Bias Supply and White LED Driver in a 4mm × 4mm QFN 04/16/2008

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC3524EUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC3524EUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC3524EUF#PBF
Pin/Package Drawing
24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC3524EUF#TRPBF
Pin/Package Drawing
24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Jan 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3524EUF#PBF

PRODUCTION

LTC3524EUF#TRPBF

PRODUCTION

pdf

PCN21_0269_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Results Summary

Filter by Model

Part Models

Product Lifecycle

PCN

Jan 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3524EUF#PBF

PRODUCTION

LTC3524EUF#TRPBF

PRODUCTION

pdf

PCN21_0269_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Results Summary

DC1121A

LTC3524EUF | Five Output Power Supply and LED Driver for Small to Medium TFT-LCDs

DC1121A

LTC3524EUF | Five Output Power Supply and LED Driver for Small to Medium TFT-LCDs

Buy Now View Details

Product Detail

DC1121A: Demo Board for LTC3524 - Adjustable TFT Bias Supply with WLED Driver

Resources

PDF

DC1121A - Demo Manual

595.00K

ZIP

DC1121A - Design File

629.00K

PDF

DC1121A - Schematic

33.00K

DC1121A

LTC3524EUF | Five Output Power Supply and LED Driver for Small to Medium TFT-LCDs

LTspice 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.