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

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?

The HMC7150 is a broadband driver amplifier for electro-absorption modulated lasers (EML) and supports data-rates up to 28.3Gbps to meet the 100Gb Ethernet system requirements. The part provides the module designers scalable power dissipation for varying drive voltage characteristics of different modulators and the power consumption of the module can be set as low as 0.12W to 0.5W at 1.5VP-P and 2.3VP-P outputs amplitudes, respectively. The HMC7150 supports wide range of supply voltages from 3.3V to 6V and delivering excellent time domain performance. The output amplitude and cross-point can be adjusted via control pins. The input and output are 50 Ohms matched and used AC coupled. The HMC7150 is in compact leadless 3x3mm surface mountable package.APPLICATIONS 100Gb Ethernet ER4/ LR4 systems CFP/CFP2/CFP4 or similar form factor modules Optical transceivers and pluggable modules Broadband gain stages and pre-amplifiers Broadband Test & Measurement Equipment

The ADD5211 is a four-string, white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. The boost controller drives an external MOSFET switch for step-up regulation from an input voltage of 4.5 V to 40 V and a pin adjustable operating frequency from 200 kHz to 1.2 MHz. An adjustable UVLO function is implemented to reduce input current during power-off.The ADD5211 provides four regulated current sinks for uniform brightness intensity. Each current sink can be driven from 40 mA to 200 mA; the LED driving current is pin adjustable using an external resistor. With an input PWM interface, the ADD5211 drives up to four parallel strings of multiple series connected LEDs.Additional features include LED short protection, LED open protection, boost output short protection, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown for both the IC and the LED array. An open-drain fault output is also included. A programmable soft start is implemented to reduce inrush current during startup. Applications LCD monitor and TV LED backlights Industrial lighting

36V, 1A Module (Power Module) LED Driver and Current Source Features: True Color PWM™ Delivers Constant Color with 250:1 Dimming Ratio Wide Input Range: 4V to 36V Up to 1A LED Current Adjustable Control of LED Current High Output Current Accuracy is Maintained Over a Wide Range from 35mA to 1A Open LED and Short-Circuit Protection Grounded LED Cathode Connection Small Footprint (15mm × 9mm × 4.32mm) Surface Mount LGA Package

3A, Full Featured DC/DC Converter with Soft-Start and Inrush Current Protection Features: Wide Input Voltage Range: 2.5V to 24V 3A, 42V Internal Switch High Efficiency Power Conversion: Up to 89% Soft-Start Frequency Set by External Resistor: 200kHz to 3.5MHz Protection Against Input Short Circuits and Hot Plugging Low VCESAT Switch: 0.3V at 2.5A (Typical) Capable of Positive and Negative Outputs Available in Thermally Enhanced 14-Lead (4mm × 3mm) DFN and 16-Lead TSSOP Packages

PWM LED Driver and Boost, Flyback and SEPIC Controller Features: True Color PWM™ Delivers Constant Color with 3000:1 Dimming Ratio Fully Integrated Load FET Driver for PWM Dimming Control of High Power LEDs 100:1 Dimming from Analog Inputs Wide FB Voltage Range: 0V to 1.23V Constant Current or Constant Voltage Regulation Low Shutdown Current: IQ = 20μA 1% 1.23V Internal Voltage Reference 2% RUN Pin Threshold with 100mV Hysteresis Programmable Operating Frequency (20kHz to 1MHz) with One External Resistor Synchronizable to an External Clock Up to 1.3fOSC Internal 7V Low Dropout Voltage Regulator Programmable Output Overvoltage Protection Programmable Soft-Start Can be Used in a No RSENSE™ Mode for VDS < 36V 16-Lead DFN and TSSOP Packages

500mA Camera LED Charge Pump Features: Low Noise Constant Frequency Operation High Efficiency: Up to 94% Multi-Mode Operation: 1x, 1.5x or 2x Boost Modes Automatic Mode Switching High Output Current: Up to 500mA Tiny Application Circuit (3mm × 3mm DFN Package All Components <1mm High) Automatic Soft-Start Output Disconnect Open, Shorted LED Protection No Inductors Internal 110m LED Current Sense Resistor 3mm × 3mm 10-Lead DFN Package

Charge Pump Regulator for Color TFT Panels

Four White LED Backlight Driver Features: Drives 4 LEDs from a 2.6 V to 5.5 V (Li-Ion) input supply 1×/1.5×/2× fractional charge pump to maximize power efficiency 0.3% typical LED current matching Up to 88% power efficiency over Li-Ion range Powers main and sub display LEDs with individual shutdown Package footprint only 9 mm2 (3 mm × 3 mm) Package height only 0.75 mm Low power shutdown mode Shutdown function Soft start limiting in-rush current