Quick Start Guide for Demonstration Circuit 749: LTC3206 Multidisplay LED Controller
User guide for DC749 featuring the LTC3206 LED controller, supporting main, sub, and RGB displays with I2C dimming control and high-efficiency charge pump power.
Overview
Demonstration circuit 749 (DC749) is designed to evaluate the LTC3206, a highly integrated multi-display LED controller. The LTC3206 features a fractional step-up/step-down charge pump that provides power for main and sub white LED displays plus an RGB color display. The device operates from an input voltage of 2.7V to 4.5V and uses an I2C interface to manage 16 dimming states for each display, allowing for 4096 color combinations. The charge pump automatically switches modes based on LED dropout to optimize efficiency. The document provides a complete quick start procedure, details on the QuickEval software interface, a full schematic, and a bill of materials.
Use Cases
- Mobile phone display backlighting
- Handheld electronic devices
- Multi-panel LED power management
- RGB status indicators
- Battery-powered portable electronics
Topics
Referenced Parts
LTC3206EUF
Linear Technology
IC., MULTIDISPLAY LED CONTROLLER LINEAR TECHNOLOGY, LTC3206EUF
24LC025
Microchip
IC., SERIAL EEPROM MICROCHIP 24LC025
NSCM315C
Nichia
Chromaticity coordinates of the Nichia NSCM315C RGB diode
JMK107BJ225MA
Taiyo Yuden
CAP., CHIP X5R 2.2uF 6.3V 20% TAIYO YUDEN, JMK107BJ225MA
2308-02
Mill-Max
TURRET TESTPOINT .064" MILL-MAX, 2308-02
24LC025
Microchip
12 1 U2 IC., SERIAL EEPROM MICROCHIP 24LC025 TSSOP8
6.3V
TDK
3 2 C3,C6 CAP., CHIP X5R 4.7uF 6.3V TDK C1608X5R0J475M
| 87331-1420 | Molex | SOCKET, 2X7 2MM STRAIGHT MOLEX/WALDOM 87331-1420 |
| NSCW100 | Nichia | LED, SMT WHITE NICHIA, NSCW100 |
| ERJ-2RKF1582X | Panasonic | RES., CHIP 15.8K 1% PANASONIC, ERJ-2RKF1582X |
| C1608X5R0J475M | TDK | CAP., CHIP X5R 4.7uF 6.3V TDK C1608X5R0J475M |
| C1608X5R0J475M | TDK | 3 2 C3,C6 CAP., CHIP X5R 4.7uF 6.3V TDK C1608X5R0J475M |
| CR05-473JM | AAC | Res., CHIP 47K 5% AAC CR05-473JM |
| CR05-512JM | AAC | RES., CHIP 5.1K 5% AAC CR05-512JM |
| CR05-820JM | AAC | RES., CHIP 82 OHM 5% AAC CR05-820JM |
| 0402ZD104K | AVX | CAP., CHIP X5R 0.1uF 10V 10% AVX, 0402ZD104K |
| LTC3206EUF | Linear Technology | IC., MULTIDISPLAY LED CONTROLLER LINEAR TECHNOLOGY, LTC3206EUF |
| 24LC025 | Microchip | IC., SERIAL EEPROM MICROCHIP 24LC025 |
| NSCM315C | Nichia | Chromaticity coordinates of the Nichia NSCM315C RGB diode |
| JMK107BJ225MA | Taiyo Yuden | CAP., CHIP X5R 2.2uF 6.3V 20% TAIYO YUDEN, JMK107BJ225MA |
| 2308-02 | Mill-Max | TURRET TESTPOINT .064" MILL-MAX, 2308-02 |
| 24LC025 | Microchip | 12 1 U2 IC., SERIAL EEPROM MICROCHIP 24LC025 TSSOP8 |
| 6.3V | TDK | 3 2 C3,C6 CAP., CHIP X5R 4.7uF 6.3V TDK C1608X5R0J475M |