LTC3208

PRODUCTION

High Current Software Configurable Multidisplay LED Controller

Part Models: 2
1ku List Price: Starting From $3.43

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Overview

1x/1.5x/2x Charge Pump Provides Up to 95% Efﬁciency
Up to 1A Total Output Current
17 Current Sources Available as MAIN, SUB, RGB, CAM and AUX LED Drivers
LED ON/OFF, Brightness Level and Display Conﬁguration Programmable Using 2-Wire I²C^™ Interface
Low Noise Constant Frequency Operation with Flying Capacitor Edge Rate Control
Automatic Charge Pump Mode Switching
Internal Soft-Start Limits Inrush Current During
Startup and Mode Switching
Open/Shorted LED Protection
Short-Circuit/Thermal Protection
256 Brightness States for MAIN and SUB Displays
4096 Color Combinations for the RGB Display
5mm × 5mm 32-Lead QFN Plastic Package

The LTC3208 is a highly integrated multidisplay LED controller. The part contains a 1A high efﬁ ciency, low noise charge pump to provide power to the MAIN, SUB, RGB, CAM and AUX LED displays. The LTC3208 requires only 4 small ceramic capacitors and one current set resistor to form a complete LED power supply and current controller.

The maximum display currents are set by a single external resistor. Current for each LED is controlled by a precision internal current source. Dimming and On/Off for all displays is achieved via the I²C serial interface. 256 brightness levels are available for the MAIN and SUB displays. 16 levels are available for the RGB and CAM displays. Four AUX current sources can be independently assigned via the I²C port to the CAM, SUB, MAIN or AUX DAC controlled displays.

The LTC3208 charge pump optimizes efﬁ ciency based on the voltage across the LED current sources. The part powers up in 1x mode and will automatically switch to boost mode whenever any enabled LED current source begins to enter dropout. The ﬁ rst dropout switches the part into 1.5x mode and a subsequent dropout switches the LTC3208 into 2x mode. The part is available in a small 5mm × 5mm 32-lead QFN package.

Applications

Video/Camera Phones with QVGA + Displays

Part Models: 2
1ku List Price: Starting From $3.43

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
LTC3208EUH#PBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3208EUH#TRPBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC3208EUH#PBF	PRODUCTION
LTC3208EUH#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

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Analog to Digital Converters (ADCs) 1
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Level Translators & Buffers 1
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