DC871A-A: Demo Board for the LTC3215 700mA Low Noise High Current LED Charge Pump.

DC902A-B: Demo Board for the LTC3214 500mA Camera LED Charge Pump.

Demonstration circuit 2176A features the LT3909, a 2-string × 50mA, 2MHz step-up LED driver with ±1.8% current matching. The LT3909 precisely regulates two LED strings for equal current, supports LED dimming that reduces brightness down to a 1/40,000 ratio, protects against faults and also reports faults. The LT3909 consists of a step-up converter with a fixed 2MHz switching frequency and current sources for the LED strings. The maximum current in each LED string is 40mA. The ISET resistor can be changed to 20.0kΩ to program the string current to 50mA – see the data sheet for an application example with 50mA string current. Voltage feedback resistors optimize operation for LEDs that are 35V maximum.

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

DC1947A: Demo Board for the LT3799-1 Offline Isolated Flyback LED Controller with Active PFC.

The LT3492 is a triple output DC/DC converter designed to operate as a constant-current source and is ideal for driving LEDs. The LT3492 works in buck, boost or buck-boost mode. The LT3492 uses a fixed frequency, current mode architecture resulting in stable operation over a wide range of supply and output voltages. A frequency adjust pin allows the user to program switching frequency between 330kHz and 2.1MHz to optimize efficiency and external component size. The external PWM input provides 3000:1 LED dimming on each channel. Each of the three channels has a built-in gate driver to drive an external LED-disconnect P-channel MOSFET, allowing high dimming range. The output current range of each channel of the LT3492 is programmed with an external sense resistor. The CTRL pin is used to adjust the LED current either for analog dimming or over-temperature protection.Applications RGB Lighting Billboards and Large Displays Automotive and Avionic Lighting Constant-Current Sources

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

110 MSPS/140 MSPS Analog Interface for Flat Panel Displays Features: Automated clamping level adjustment 140 MSPS maximum conversion rate 300 MHz analog bandwidth 0.5 V to 1.0 V analog input range 500 ps p-p PLL clock jitter at 110 MSPS 3.3 V power supply Full sync processing Sync detect for hot plugging Midscale clamping Power-down mode Low power: 500 mW typical 4:2:2 output format mode

Charge Pump, 7-Channel Smart LED Driver with I2C Interface Features: Charge pump with automatic gain selection of 1×, 1.5×, and 2× for maximum efficiency 7 independent, programmable LED drivers 7 drivers capable of 30 mA (typical) 1 driver also capable of 60 mA (typical) Programmable maximum current limit (128 levels) Standby mode for <1 μA current consumption 16 programmable fade in and fade out time 0.1 sec to 5.5 sec Choose from linear, square, or cubic rates Fading override I2C-compatible interface for all programming Dedicated reset pin and built-in power-on reset (POR) Short-circuit, overvoltage, and overtemperature protection Internal soft start to limit inrush currents Input-to-output isolation during faults or shutdown Operation down to VIN = 2.5 V with undervoltage lockout (UVLO) at VIN = 2.0 V Available in a small 20-ball, 2.15 mm × 2.36 mm × 0.6 mm WLCSP or a 20-lead, 4 mm × 4 mm × 0.75 mm LFCSP

White LED Driver with Integrated Schottky in 3mm x 2mm DFN Features: Drives Up to Ten White LEDs from a 3V Supply High Side Sense Allows “One Wire Current Source” Internal Schottky Diode One Pin Dimming and Shutdown 80:1 True Color PWM™ Dimming Range 42V Open LED Protection 1MHz Switching Frequency ±5% Reference Accuracy VIN Range: 2.5V to 12V Requires Only 2.2µF Output Capacitor Low Profile 8-Lead DFN Package (3mm × 2mm × 0.75mm)