The LTC3202 is a low noise, constant frequency charge pump DC/DC converter that uses fractional conversion to increase efficiency in white LED applications. The part can be used to produce a regulated voltage or current of up to 125mA from a 2.7V to 4.5V input. Low external parts count (two flying capacitors and two small bypass capacitors at VIN and VOUT) make the LTC3202 ideally suited for small, battery-powered applications.An internal 2-bit DAC allows LED current to be adjusted for LED brightness control. The LTC3202 also has thermal shutdown protection and can survive a continuous short-circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small external capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1?A.The LTC3202 is available in the 10-pin MSOP and 3mm x 3mm DFN packages.Applications White LED Backlighting Programmable Boost Current Source?

Laser Drivers 3.2Gbps Low-Power SFP Laser Driver

High Performance 8-Bit Display Interface Features: 8-bit analog-to-digital converters 140 MSPS maximum conversion rate Low PLL clock jitter at 140 MSPS Automatic gain matching Automated offset adjustment 2:1 input mux Power-down via dedicated pin or serial register 4:4:4, 4:2:2, and DDR output format modes Variable output drive strength Odd/even field detection External clock input Regenerated Hsync output

Low Noise, High Efficiency Charge Pump for White LEDs Features: Low Noise Constant Frequency Operation 25% Less Input Current Than Doubler Charge Pump High Output Current: Up To 125mA Small Application Circuit Regulated Output Voltage or Current Automatic Soft-Start VIN Range: 2.7V to 4.5V No Inductors 1.5MHz Switching Frequency ICC < 1µA in Shutdown Available in 10-Pin MSOP and 3mm x 3mm DFN Packages 

The AD9888 is a complete 8-bit, 170 MSPS, monolithic analog interface optimized for capturing RGB graphics signals from personal computers and workstations. Its 170 MSPS encode rate capability and full-power analog bandwidth of 500 MHz supports resolutions of up to 1600 × 1200 (UXGA) at 75 Hz.For ease of design and to minimize cost, the AD9888 is a fully integrated interface solution for flat panel displays. The AD9888 includes an analog interface that has a 170 MHz triple ADC with an internal 1.25 V reference phase-locked loop (PLL) to generate a pixel clock from HSYNC and COAST; midscale clamping; and programmable gain, offset, and clamp controls. The user provides only a 3.3 V power supply, analog input, and HSYNC and COAST signals. Three-state CMOS outputs can be powered from 2.5 V to 3.3 V.The on-chip PLL of the AD9888 generates a pixel clock from the HSYNC and COAST inputs. Pixel clock output frequencies range from 10 MHz to 170 MHz. PLL clock jitter is typically less than 450 ps p-p at 170 MSPS. When the COAST signal is presented, the PLL maintains its output frequency in the absence of HSYNC. A sampling phase adjustment is provided. Data, HSYNC, and clock output phase relationships are maintained. The PLL can be disabled, and an external clock input can be provided as the pixel clock. The AD9888 also offers full sync processing for composite sync and sync-on-green applications.A CLAMP signal is generated internally or can be provided by the user through the CLAMP input pin. This device is fully programmable via a 2-wire serial port.Fabricated in an advanced CMOS process, the AD9888 is provided in a space-saving, 128-lead, MQFP, surface-mount, plastic package and is specified over the 0°C to 70°C temperature range. The AD9888 is also available in a Pb-free package. APPLICATIONS RGB Graphics Processing LCD Monitors and Projectors Plasma Display Panels Scan Converters Microdisplays Digital TV

DC507A: Demo Board for the LT1937 White LED Step-Up Converter in SC70 and ThinSOT.

60V, 1.5A LED Driver with Internal Exponential Scale Dimming Features: Operates in Boost, SEPIC, Buck Mode and Buck-Boost Mode 128:1 Internal Exponential Scale PWM Dimming Wide Input Voltage Range (3V to 60V) 1.5A, 60V Internal Switch 20000:1 External PWM Dimming at 100Hz ±2% LED Current and Output Voltage Regulation PMOS Switch Driver for PWM Dimming LED Short/Open Protection and Indication Constant Voltage and Constant Current Regulation Adjustable 300kHz to 2MHz Switching Frequency Adjustable 100Hz to 1kHz PWM Generator Frequency Internal Spread Spectrum Frequency Modulation Easy Synchronization to External Clock Programmable VIN UVLO with Hysteresis Available in 16-Lead MSOP Package

Synchronous Buck-Boost High Power White LED Driver Features: High Efficiency: 90% Typical Over Entire Li-Ion Battery Range Wide VIN Range: 2.7V to 5.5V Up to 500mA Continuous Output Current Internal Soft-Start Open/Shorted LED Protection LED Current Matching Typically <2% Constant Frequency 1MHz Operation Low Shutdown Current: 6µA Overtemperature Protection Small Thermally Enhanced 16-Lead (4mm x 4mm) QFN Package

The LTM8005 is a 38VIN, 38VOUT boost ?Module (powermicromodule) LED driver designed to regulate current orvoltage and is ideal for driving LEDs. The fixed frequencyand current mode architecture result in stable operationover a wide range of supply and output voltages. Spreadspectrum frequency modulation (SSFM) can be activatedfor improved electromagnetic compatibility (EMC) performance.The ground-referred voltage FB pin serves as theinput for several LED protection features, and also allows theconverter to operate as a constant voltage source. The PWMinput provides LED dimming ratios of up to 3000:1, and theCTRL inputs provide additional analog dimming capability.The low profile package enables utilization of unusedspace on the bottom of PC boards. The LTM8005 is packagedin thermally enhanced, compact over-molded BallGrid Array (BGA) package suitable for automated assemblyby standard surface mount equipment. The LTM8005is RoHS compliant.APPLICATIONS High Power LED, High Voltage LED Accurate Current-Limited Voltage Regulators

The LT3478/LT3478-1 are 4.5A step-up DC/DC converters designed to drive LEDs with a constant current over a wide programmable range. Series connection of the LEDs provides identical LED currents for uniform brightness without the need for ballast resistors and expensive factory calibration.The LT3478-1 reduces external component count and cost by integrating the LED current sense resistor. The LT3478 uses an external sense resistor to extend the maximum programmable LED current beyond 1A and also to achieve greater accuracy when programming low LED currents. Operating frequency can be set with an external resistor from 200kHz up to 2.25MHz. Unique circuitry allows a PWM dimming range up to 3000:1 while maintaining constant LED color. The LT3478/LT3478-1 are ideal for high power LED driver applications such as automotive TFT LCD backlights, courtesy lighting and heads-up displays. One of two CTRL pins can be used to program maximum LED current. The other CTRL pin can be used to program a reduction in maximum LED current vs temperature to maximize LED usage and improve reliability.Additional features include inrush current protection, programmable open LED protection and programmable soft-start. Each part is available in a 16-pin thermally enhanced TSSOP Package.Applications High Power LED Driver Automotive Lighting