LT3513

PRODUCTION

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

Part Models: 4
1ku List Price: Starting From $5.07

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Overview

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 V_ON Delay
Three Integrated Schottky Diodes
PGOOD Pin for AV_DD Output Disconnect
PanelProtect^™ Circuitry Disables V_ON Upon Fault
Thermally Enhanced 38-Lead 5mm × 7mm QFN Package

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, V_LOGIC, 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: AV_DD, V_ON and V_OFF required by the LCD panel. A high-side PNP provides delayed turn-on of the V_ON signal and can handle up to 30mA. Protection circuitry ensures that V_ON is disabled if any of the four outputs are more than 10% below the programmed voltage.

Applications

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

Part Models: 4
1ku List Price: Starting From $5.07

Documentation

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
LT3513EUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3513EUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3513IUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3513IUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor

Tools & Simulations

LTspice 1

LT3513 Demo Circuit - 2MHz High Current 5-Output Regulator for TFT-LCD (12V to 5V @ 0.5A, 22V @ 20mA, -10V @ 20mA, 3.3V @ 0.5A & 8V @ 80mA)

Models for the following parts are available in LTspice:

LT3513

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.