Dual Output Boost Drives up to 6 White LEDs & an OLED Display from a 2mm x 3mm DFN Package
The LT3498’s LED driver uses a 2.3MHz PWM frequency, keeping switching noise out of critical wireless and audio bands. The device also uses a high side current sense topology, providing a one-wire current source for the LED Driver. Similarly, the OLED driver uses a unique control scheme that delivers both high efficiency and low output ripple over a wide load current range. This technique guarantees that the switching frequency stays above the audio band for the entire load range, making it ideal for noise-sensitive applications such as MP3 players and cellular phones. Additional features include open LED protection and OLED output disconnect.
The LT3498EDDB is available from stock in a 12-lead 2mm x 3mm DFN package.
Summary of Features: LT3498
- Dual Output Boost for Dual Display Devices
- Drives Up to Six White LEDs & OLED/LCD Bias
- Internal Power Switches and Schottky Diodes
- Independent Dimming & Shutdown
- 200mV High Side Sense on LED Driver Allows “One-Wire Current Source”
- Wide Input Voltage Range: 2.5V to 12V
- Wide Output Voltage Range: Up to 32V
- 2.3MHz PWM Frequency for LED Driver
- PFM for OLED Driver is Non-Audible over Entire Load Range
- Open LED Protection
- OLED Output Disconnect
- Available in 12-Pin 2mm x 3mm DFN Package
LINEAR TECHNOLOGY GmbH
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, uModule(TM) products, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com.
LT, LTC, LTM, Burst Mode and are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
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