The LT3799-1 is an isolated flyback controller with power factor correction specifically designed for driving LEDs. The controller operates using critical conduction mode allowing the use of a small transformer. Using a novel current sensing scheme, the controller is able to deliver a well regulated current to the secondary side without using an opto-coupler. A strong gate driver is included to drive an external high voltage MOSFET. Utilizing an onboard multiplier, the LT3799-1 typically achieves power factors of 0.97. The FAULT pin provides notification of open and short LED conditions. The LT3799-1 offers improved line regulation over the LT3799, but is not designed for use with a TRIAC dimmer.The LT3799-1 uses a micropower hysteretic start-up to efficiently operate at offline input voltages, with a third winding to provide power to the part. An internal LDO provides a well regulated supply for the part?s internal circuitry and gate driver. Triac Dimmable LED Current Regulator LT3799 Yes ? 10% LT3799-1 No ? 5% Applications Offline 4W to 100W+ LED Applications High DC VIN LED Applications

Demo circuit 1818A features the LTM8001 μModule regulator that includes a 5A switching regulator and an array of five 1.1A low noise LDOs. The demo board operates from a 6V to 36V input and is configured so the switching regulator provides an output that also powers the LDOs. The LDOs in turn provide three outputs – one from a single LDO and two outputs each formed by paralleling two LDOs together.

DC1826A-A Demo Board for: LTC2389-18 18-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 99.8dB SNR LTC6655 0.25ppm Noise, Low Drift Precision References LT6201 Dual 165MHz, Rail-to-Rail Input and Output, 0.95nV/√Hz Low Noise, Op Amp Family

The LT1786F is a fixed frequency, current mode, switching regulator that provides the control function for Cold Cathode Fluorescent Lighting (CCFL). The IC includes an efficient high current switch, an oscillator, output drive logic, control circuitry and a micropower 6-bit 100?A full-scale current output DAC. The DAC provides simple ?bits-to-lamp-current control? and communicates using the 2-wire SMBus serial interface. The LT1786F acts as an SMBus slave device using one of two selectable SMBus addresses set by the address pin ADR.On Power-up, the DAC output current assumes midrange or zero scale, depending on the logic state of the ADR pin.The entire IC can be shut down through the SMBSUS pin or by setting the SHDN bit = 1 in the SMBus command byte. Digital data for the DAC output current is retained internally and the supply current drops to 40?A for standby operation. The active low SHDN pin disables the CCFL control circuitry, but keeps the DAC alive. Supply current in this operating mode drops to 150?A.The LT1786F control circuitry operates from a logic supply voltage of 3.3V or 5V. The IC also has a battery supply pin that operates from 4.5V to 30V. The LT1786F draws 6mA typical quiescent current. A 200kHz switching frequency minimizes magnetic component size. Current mode switching techniques with cycle-by-cycle limiting gives high reliability and simple loop frequency compensation. The LT1786F is available in a 16-pin narrow SO package.Applications Notebook and Palmtop Computers Portable Instruments Personal Digital Assistants

Demonstration circuit 1830B is a battery charger controller and PowerPath™ manager featuring the LTC4000. This board should be connected to a front end DC/DC power supply for a complete charger solution.

DC1850A-B: Demo Board for the LTC4366-1/LTC4366-2 High Voltage Surge Stopper.

DC1884A-A: Demo Board for LTM9011-14 14-Bit, 125Msps Low Power Octal ADCs.

The LTM9011-14/LTM9010-14/LTM9009-14 are 8-channel, simultaneous sampling 14-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. AC performance includes 73.1dB SNR and 88dB spurious free dynamic range (SFDR). Low power consumption per channel reduces heat in high channel count applications. Integrated bypass capacitance and flow-through pinout reduces overall board space requirements.DC specs include ?1LSB INL (typ), ?0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.2LSBRMS.The digital outputs are serial LVDS to minimize the number of data lines. Each channel outputs two bits at a time (2-lane mode). At lower sampling rates there is a one bit per channel option (1-lane mode).The ENC+ and ENC? inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An internal clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.Applications Communications Cellular Base Stations Software Defined Radios Portable Medical Imaging Multichannel Data Acquisition Nondestructive Testing

Demonstration circuit 1886B features the LTC4232 and the LTC4232-1 5A integrated Hot Swap™ controllers. The LTC4232 is ideally suited for demanding power distribution control in 2.9V to 15V applications for hot board insertion protection, high side power switching, and electronic circuit breaker functions.

The LTM4624 is a complete 4A step-down switching mode ?Module??(micromodule) regulator in a tiny 6.25mm ? 6.25mm ? 5.01mm BGA package. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 4V to 14V or 2.375V to 14V with an external bias supply, the LTM4624 supports an output voltage range of 0.6V to 5.5V, set by a single external resistor. Its high efficiency design delivers 4A continuous, 5A peak, output current. Only bulk input and output capacitors are needed.The LTM4624 supports selectable discontinuous mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.Fault protection features include overvoltage, overcurrent and overtemperature protection.The LTM4624 is available with SnPb (BGA) or RoHS compliant terminal finish.Applications Telecom, Datacom, Networking and Industrial?Equipment Medical Diagnostic Equipment Data Storage Rack Units and Cards Test and Debug Systems