LT3513 - 2MHz High Current 5-Output Regulator for TFT-LCD Panels

Features

  • 4.5V to 30V Input Voltage Range
  • Four Integrated Switches: 2.2A Buck, 1.5A Boost, 0.25A Boost, 0.25A Inverter (Guaranteed Minimum Current Limit)
  • External NPN LDO Driver
  • Fixed Frequency, Low Noise Outputs
  • Inductor Current Sense for Buck
  • Soft-Start for All Outputs
  • Externally Programmable VON Delay
  • Three Integrated Schottky Diodes
  • PGOOD Pin for AVDD Output Disconnect
  • PanelProtect™ Circuitry Disables VON Upon Fault
  • Thermally Enhanced 38-Lead 5mm × 7mm QFN Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LT3513 Typical Application
LT3513 Typical Application

Description

The LT3513 5-output adjustable switching regulator provides power for large TFT-LCD panels. The 38-pin 5mm × 7mm QFN device can generate a 3.3V or 5V logic supply along with the triple output supply required for the TFT-LCD panel. A lower voltage secondary logic supply may also be generated with the addition of an external NPN driven by the internal linear regulator. A step-down regulator provides a low voltage output, VLOGIC, with up to 1.2A of current while capable of operating from a wide input range of 4.5V to 30V. A high power step-up converter, a lower power step-up converter and an inverting converter provide the three independent output voltages: AVDD, VON and VOFF required by the LCD panel. A high-side PNP provides delayed turn-on of the VON signal and can handle up to 30mA. Protection circuitry ensures that VON is disabled if any of the four outputs are more than 10% below the programmed voltage.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3513EUHF#PBF 5x7 QFN-38 UHF E 05-08-1701 Yes
LT3513EUHF#TRPBF 5x7 QFN-38 UHF E 05-08-1701 Yes
LT3513IUHF#PBF 5x7 QFN-38 UHF I 05-08-1701 Yes
LT3513IUHF#TRPBF 5x7 QFN-38 UHF I 05-08-1701 Yes


LT3513 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3513EUHF#PBF 5x7 QFN-38 E $6.07 $4.25 Yes
LT3513EUHF#TRPBF 5x7 QFN-38 E $4.31 Yes
LT3513IUHF#PBF 5x7 QFN-38 I $7.14 $5.00 Yes
LT3513IUHF#TRPBF 5x7 QFN-38 I $5.06 Yes
Buy NowRequest Samples
* 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
DC1028A LT3513EUHF DEMO BOARD | 2MHz High Current 5-Output Regulator for TFT LCD Panels $150.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3513IUHF#PBF 5x7 QFN-38 I $7.14 $5.00 Yes
LT3513IUHF#TRPBF 5x7 QFN-38 I $5.06 Yes
Buy NowRequest Samples
* 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.

Applications

  • Automotive TFT-LCD Displays
  • Large TFT-LCD Desktop Monitors
  • Flat Panel Televisions

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

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Models for the following parts are available in LTspice:
LT3513

Technical Support