The LTC3808 is a synchronous step-down switching regulator controller that drives external complementary power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for a current sense resistor and improves efficiency.Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation, extending operating time in battery-powered systems.The switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC3808 can be externally synchronized from 250kHz to 750kHz. Burst Mode is inhibited during synchronization or when the SYNC/MODE pin is pulled low to reduce noise and RF interference. To further reduce EMI, the LTC3808 incorporates a novel spread spectrum frequency modulation technique.The LTC3808 is available in the tiny footprint thermally enhanced DFN package or 16-lead SSOP package.Protected by U.S. Patents including 5481178, 5929620, 6580258, 6304066, 5847554, 6611131, 6498466. Other Patents pending. Features Package LTC3809 PLL, Selectable Spread Spectrum, Power Good 3x3 DFN-10, MS-10E LTC3809-1 Tracking 3x3 DFN-10, MS-10E LTC3808 PLL, Selectable Spread Spectrum, Tracking Power Good 4x3 DFN-14, SSOP-16 Applications One or Two Cell Lithium-Ion Powered Devices Notebook and Palmtop Computers, PDAs Portable Instruments Distributed DC Power Systems

DC782A-L: Demo Board for the LTC2239 10-Bit, 80Msps Low Noise 3V ADC.

DC793A: Demo Board for the LTC3709 Fast 2-Phase, No RSENSE Synchronous DC/DC Controller with Tracking/Sequencing.

DC794A: Demo Board for the LT6554 650MHz Gain of 1 Triple Video Buffer.

DC800A-B: Demo Board for the LT1993-4 900MHz Low Distortion, Low Noise Differential Amplifier/ADC Driver (AV = 4V/V).

Demonstration circuit 804 is a Power over Ethernet PD Interface with Integrated Switching Regulator featuring the LTC4267. It provides a complete IEEE 802.3af power device (PD) interface and isolated 3.3V power supply solution for use in Power over Ethernet (PoE) applications.

Demonstration circuit 810 is a high efficiency buck-boost flash LED driver featuring the LTC3453 and the LXCL-PWF1 Lumileds Luxeon Flash LED. The board is optimized for 500mA (300ms) LED flash current or 150mA constant LED torch current with a single Lithium-Ion battery input voltage range of 2.7V to 4.2V or three AAA batteries in series. The Lithium-Ion battery input voltage range, high LED flash current and separate torch mode current setting, internal synchronous power switches, minimal and low-profile external components, and simple design makes the LTC3453 a great solution for highly efficient, space-constrained cellular telephone camera flash solutions. DC810 comes with three AAA batteries in series to simulate the capabilities of a typical Lithium-Ion cellular telephone battery.

The LT3027 is a dual, micropower, low noise, low dropout regulator with independent inputs. With an external 0.01?F bypass capacitor, output noise is a low 20?VRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 25?A quiescent current per channel makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1?A. Shutdown control is independent for each channel, allowing for flexibility in power management. The device is capable of operating over an input voltage from 1.8V to 20V, and can supply 100mA of output current from each channel with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.The LT3027 regulator is stable with output capacitors as low as 1?F. Small ceramic capacitors can be used without the series resistance required by other regulators.Internal protection circuitry includes reverse battery protection, current limiting and thermal limiting protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3027 regulator is available in the thermally enhanced 10-lead MSOP and low profile (0.75mm) 3mm ? 3mm DFN packages.Applications Cellular Phones Pagers Battery-Powered Systems Frequency Synthesizers Wireless Modems Tracking/Sequencing Power Supplies

DC816A-G: Demo Board for the LTC2298 Dual 14-Bit, 65Msps Low Power 3V ADCs.

DC816A-R: Demo Board for the LTC2286 Dual 10-Bit, 25Msps Low Noise 3V ADCs.