August 10, 2005 - BEIJING - Linear Technology introduces the LTC3208, a fully integrated 850kHz, low noise, high efficiency 1x / 1.5x / 2x charge pump multi-display LED driver. It can drive up to 17 LED current sources: a main display with 1 - 4 LEDs, a sub-display with 1 - 2 LEDs, a RGB display with 1 - 3 LEDs and a 1 - 4 LEDs Camera display and a 1 - 4 LED auxiliary display. The device is available in a compact 5mm x 5mm QFN package. Each display has its own dimming and digital control programmed via a two-wire I2CTM serial interface. The LTC3208 2.9V to 4.5V input voltage is optimized for single-cell Li-ion honeycomb applications. When driven with a Li-Ion battery (nominally 3.6V), the efficiency is up to 95% while quiescent current is only 250uA, maximizing battery life. The LTC3208 requires only four small capacitors and a single resistor to provide a small footprint (the LTC3208 charge pump automatically optimizes efficiency based on VIN and LED forward voltage.) The device enters 1x mode at power-up Any working LED current source will automatically switch to boost mode (1.5x) as soon as the differential voltage is present. Switching to 2x mode after the differential has occurred. The maximum current of the primary / secondary / RGB / camera / Single Resistor Settings. The LED current is controlled with a precise internal current source and all display dimming and on / off controls are performed via the two-wire I2C serial interface. The main and sub displays have 256 levels of brightness and the RGB display Available in 4,096 colors, the internal circuitry prevents inrush current and excessive input noise during startup and mode switching LTC3208EUH in a 32-lead QFN (5mm x 5mm) package is available from stock in 1,000-piece quantities Pricing starts at $ 2.55 per unit. Performance Summary: LTC3208 • Inductorless, Up to 95% Efficiency • Multi-Mode and Automatic Mode Switching for Efficiency Optimization 1x / 1.5x / 2x charge pump • Up to 1A of total output current • LED drivers for main, sub, RGB, camera, and auxiliary displays drive up to 17 current sources • LED on / off with two-wire I2C interface, brightness Ratings and Display Configuration Programming · 0.5% (typ) LED Current Matching · Low Noise, Constant Frequency Operation · 2.9V to 4.5V Input Voltage Range · 2 Tiny Solutions Footprint, Height · 5mm x 5mm QFN- 32 package
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The color of the smart color changing film can be customized, red, blue, black, gray, green, etc. The dimming film can be divided into roll material and sheet material.
There are two sizes of sheets, 165*105mm and 297*210mm (A4 size). The switchable dimming film can be switched according to the width of the division, there are 1m, 1.2m, 1.8m, 2m, can be customized. We have done a variety of projects, such as villa balcony window (to prevent no one peeping), office meeting room (can do projection wall or partition door), floor door (sliding door, automatic door can be matched), shopping mall window, museum 3D exhibition hall, sightseeing elevator glass, car windows and license plates and so on. You can trust us. We have rich experience.
Our products have been tested for tens of thousands of times. The probation period is more than ten years. All kinds of certificates are complete.
TQX has been continuously developing high-tech products, and 2D and 3D fields have been penetrated. For example, the marketing of this product requires more investment; in addition, the technology of smart dimming glass needs to be continuously optimized and improved to better meet the needs of the market.
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