The ADP1653 is a very compact, high efficiency, high power, camera flash LED driver optimized for cellular phones. The high efficiency and dynamic LED current control of the device improve flash brightness and picture quality in dimly lit environments. Efficiency peaks at 92% and is higher than charge pump solutions over the Li-Ion battery range.
The device has a dual-mode interface that is configurable to 2-bit logic or an I2C® interface. The indicator and high power LED currents are programmable with external resistors or through the I2C interface. To maximize overall flash brightness, the ADP1653 offers an input to reduce flash LED current in less than 50 μs, referred to as the Tx mask. Tx masking reduces battery stress by scaling back flash LED current during an RF transmission.
The ADP1653 solution requires only four external components in I2C mode and fits in a 6.4 mm × 7.2 mm space. The part integrates multiple safety features such as soft start, flash timeout, output current limit, thermal protection, and overvoltage protection.
The ADP1653 operates over the −40°C to +125°C junction temperature range.
Data Sheet, Rev. B, 9/07
|Title||Content Type||File Type|
|ADG1653: Compact, High Efficiency, High Power, Flash/Torch LED Driver with Dual Interface Data Sheet (Rev B, 09/2007) (pdf, 972 kB)||Data Sheets|
|AN-861: ADP1653 Evaluation and Test Methods (pdf, 937 kB)||Application Notes|
Isolating Power in Communication Bus and Gate Drive Applications
Starting with a communications application overview of small power options through the process of selecting the right power products this webcast is a great resource for your communications applications designs.
Innovative Power Reduction Techniques Enable Handset Manufacturers to Provide Media Rich Devices
The demand for mobile devices with high-end features has been rapidly increasing. Features like text messaging, gaming, GPS navigation, web browsing and video playback on high resolution color displays are becoming the norm in today’s portable consumer electronics market.
(LED Journal, August/September 2009)
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ADP1652 High Brightness Flash LED Driver with I2C Interface
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|ADP1653 High Brightness Flash LED Driver with I2C® Interface (pdf, 1629 kB)||Overview|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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