LTC3210-2
LTC3210-3

PRODUCTION

MAIN/CAM LED Controllers with 32-Step Brightness Control in 3mm × 3mm QFN

Part Models: 4
1ku List Price: Starting From $2.29

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Overview

Low Noise Charge Pump Provides High Efficiency with Automatic Mode Switching
Multimode Operation: 1x, 1.5x, 2x
Individual Full-Scale Current Set Resistors
Up to 500mA Total Output Current
Single Wire EN/Brightness Control for MAIN and CAM LEDs
32:1 Linear Brightness Control Range for MAIN Display
Three or Four 25mA Low Dropout MAIN LED Outputs
One 400mA Low Dropout CAM LED Output
Low Noise Constant Frequency Operation*
Low Shutdown Current: 3μA
Internal Soft-Start Limits Inrush Current During Startup and Mode Switching
Open/Short LED Protection
No Inductors
3mm × 3mm 16-Lead Plastic QFN Package

The LTC3210-2/LTC3210-3 are low noise charge pump DC/DC converters designed to drive three or four MAIN LEDs and one high current CAM LED for camera lighting. The LTC3210-2/LTC3210-3 require only four small ceramic capacitors and two current set resistors to form a complete LED power supply and current controller.

Built-in soft-start circuitry prevents excessive inrush current during start-up and mode changes. High switching frequency enables the use of small external capacitors. Independent MAIN and CAM full-scale current settings are programmed by two external resistors.

Shutdown mode and current output levels are selected via two logic inputs. ENM and ENC are toggled to adjust the LED currents via internal counters and DACs. A 5-bit linear DAC (32 steps) provides high resolution brightness control for the MAIN display.

The charge pump optimizes efficiency 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 LTC3210-2/LTC3210-3 are available in a 3mm × 3mm 16-lead QFN package.

Applications

Multi-LED Light Supply for Cellphones/DSCs/PDAs

Part Models: 4
1ku List Price: Starting From $2.29

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
LTC3210EUD-2#PBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3210EUD-2#TRPBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3210EUD-3#PBF	16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3210EUD-3#TRPBF	16-Lead QFN (3mm x 3mm x 0.75mm 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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Tools & Simulations

LTspice 1

LTC3210-2 - LED Driver IC

Models for the following parts are available in LTspice:

LTC3210
LTC3210-1
LTC3210-2
LTC3210-3

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.