Demonstration circuit 1406A features three LT3746's, a 32-channel 20mA LED driver with buck controller and serial interface. The three LT3746’s are connected in series to control 32 OSRAM RGB LEDs stuffed on the demo board. Each IC drives a separate color. The demo board input voltage range is 9V to 40V and the LED output voltage is 4.2V for the blue and green LEDs, and 3V for the red LEDs. Each channel has an individually adjustable 12-bit (4096-step) grayscale PWM dimming control and a 6-bit (64-step) dot correction current adjustment.  Individual open/short LED and overtemperature flags are sent back during status read-back.  The evaluation software installed in a host computer communicates with the DC1406A via the interface board DC590B, an USB serial controller.

DC1417A: Demo Board for the LT6230 215MHz, Rail-to-Rail Output, 1.1nV√Hz, 3.5mA Op Amp Family.

Demonstration circuit 1428A features the dual output LT3645 step-down regulator plus linear regulator. The circuit is designed to convert a 5V to 36V (55V transients) input source to 3.3V at 500mA using the buck regulator and this output is linear regulated down to provide 2.5V at 200mA. Thus the two outputs provide 300mA (buck) and 200mA (LDO).

Demonstration circuit 1433 is an adjustable 5A linear regulator featuring the LT3070. The LT3070 is a low dropout voltage, UltraFast™ transient response linear regulator. The device supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS. The LT3070’s high bandwidth permits the use of low ESR ceramic capacitors. Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. The demo board has a 1.2V to 3V input voltage range and a 2.5V to 3.6V BIAS voltage range. A margining function allows the user to tolerance system output voltage in increments of ±1%, ±3% or ±5%. To maintain proper performance and regulation, the BIAS supply voltage must be higher than the IN supply voltage. For a given VOUT, the BIAS voltage must satisfy the following conditions: 2.2 ≤ VBIAS ≤ 3.6V and VBIAS ≥ (1.25 · VOUT + 1V). For VOUT ≤ 0.95V, the minimum bias voltage is limited to 2.2V.

Demonstration circuit 1439A is an adjustable dual monolithic step-down switching regulator with two adjustable power-on reset timers and an adjustable watchdog timer. The regulator operates off inputs up to 36V and withstands transients up to 60V. The two buck outputs are capable of generating up to 800mA each and both of them have independent RUN/SS function.

The LTC3603 is a high efficiency, monolithic synchronous step-down DC/DC converter utilizing a constant-frequency, current mode architecture. It operates from an input voltage range of 4.5V to 15V and provides an adjustable regulated output voltage from 0.6V to 14.5V while delivering up to 2.5A of output current. The internal synchronous power switch with 45m? on-resistance increases efficiency and eliminates the need for an external Schottky diode. The switching frequency can either be set by an external resistor or synchronized to an external clock. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of loads and output capacitors.The LTC3603 can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference, while Burst Mode operation provides the highest efficiency at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the requirements of the application.Applications Point-of-Load Supplies Portable Instruments Communications Infrastructure

DC1455A: Demo Board for the LTC5598 5MHz to 1600MHz High Linearity Direct Quadrature Modulator.

The LTC3588-2 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric, solar, or magnetic transducers.An ultralow quiescent current undervoltage lockout (UVLO) mode with a 16V rising threshold enables efficient energy extraction from sources with high open circuit voltages. This energy is transferred from the input capacitor to the output via a high efficiency synchronous buck regulator. The 16V UVLO threshold also allows for input to output current multiplication through the buck regulator. The buck features a sleep state that minimizes both input and output quiescent currents while in regulation.Four output voltages of 3.45V, 4.1V, 4.5V and 5.0V are pin selectable with up to 100mA of continuous output current, and suit Li-Ion and LiFePO4 batteries as well as supercapacitors. An input protective shunt set at 20V provides overvoltage protection. Output Voltage (Switcher) UVLO Quiescent Current LTC3588-1 Selectable 1.8V, 2.5V, 3.3V or 3.6V 4.04V(Rising) 2.87V(Falling) 950nA (No Load) 450nA (UVLO) LTC3588-2 Selectable 3.45V, 4.1V, 4.5V or 5V 16V(Rising) 14V(Falling) 1,500nA (No Load) 830nA (UVLO) Applications Piezoelectric Energy Harvesting Electro-Mechanical Energy Harvesting Low Power Battery Charging Wireless HVAC Sensors Mobile Asset Tracking Tire Pressure Sensors Battery Replacement for Industrial Sensors

The LTC3620 is a high efficiency, synchronous buck regulator, suitable for very low power, very small footprint applications powered by a single Li-Ion battery.The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported by the 0.6V feedback reference voltage. The LTC3620-1 option is internally programmed to provide a 1.1V output.The LTC3620 uses a unique variable frequency architecture to minimize power loss and achieve high efficiency. The switching frequency is proportional to the load current, and an internal frequency clamp forces a minimum switching frequency at light loads to minimize noise in the audio range. The user can program the frequency of this clamp by applying an external clock to the FMIN/MODE pin.The battery status output, LOBATB, indicates when the input voltage drops below 3V. To help prevent damage to the battery, an undervoltage lockout (UVLO) circuit shuts down the part if the input voltage falls below 2.8V.The LTC3620 is available in a low profile, 2mm ? 2mm 8-lead DFN package.Applications Hearing Aids Wireless Headsets Li-Ion Cell Applications Button Cell Replacement

DC1464A: Demo Board for the LTC6412 800MHz, 31dB Range Analog-Controlled VGA.

DC1492A: Demo Board for the LTC2462 Ultra-Tiny, 16-Bit ΔΣ ADCs with 10ppm/°C Max Precision Reference.

The LTC2942 measures battery charge state, battery voltage and chip temperature in handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery?s positive terminal and the load or charger. Battery voltage and on-chip temperature are measured with an internal 14-bit No Latency ??? ADC. The three measured quantities (charge, voltage and temperature) are stored in internal registers accessible via the on-board SMBus/I2C interface.The LTC2942 features programmable high and low thresholds for all three measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register.The LTC2942 requires only a single low value sense resistor to set the measured current range. Integrated Sense Resistor LTC2942 No LTC2942-1 Yes Applications Low Power Handheld Products Cellular Phones MP3 Players Cameras GPS

The LTC2392-16 is a low noise, high speed 16-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2392-16 supports a large ?4.096V fully differential input range, making it ideal for high performance applications which require maximum dynamic range. The LTC2392-16 achieves ?2LSB INL max, no missing codes at 16-bits and 94dB SNR (typ). The LTC2392-16 includes a precision internal reference with a guaranteed 0.5% initial accuracy and a ?20ppm/?C (max) temperature coefficient. Fast 500ksps throughput with no cycle latency in both parallel and serial interface modes makes the LTC2392-16 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2392-16 dissipates only 110mW at 500ksps, while both nap and sleep power-down modes are provided to further reduce power during inactive periods.Applications Medical Imaging High Speed Data Acquisition Digital Signal Processing Industrial Process Control Instrumentation ATE

DC1502A: Demo Board for the LTC4359 Ideal Diode Controller with Reverse Input Protection.

DC1503A-B: Demo Board for the LTM2881 Complete Isolated RS485/RS422 µModule Transceiver Plus Power.

DC1504A: Demo Board for the LT4180 Virtual Remote Sense Controller.

Demonstration circuit 1514A feature the LT3579 in A Boost Regulator configuration. The Boost is designed to convert a 5V to 10V input source to 12V at 1.75A. DC1514A is designed to survive output short circuit events with the external MOSFET installed at the input as default. The board includes an option to install the MOSFET at the output side. The LT3579 includes a 42V Master and Slave switch combination with 6A total current and can be used in many configurations such as Boost, SEPIC, Cuk and Flyback.

Demonstration circuit 1517A is a monolithic high voltage isolated flyback converter featuring the LT3511. This demo circuit is designed for a 5V isolated output from an input voltage range of 36V to 75V. The maximum output current is up to 300mA. The circuit doesn’t require an opto-isolator, due to the output voltage being sensed directly from the primary side transformer winding. A third winding off the transistor is used to bias the LT3511 for highest efficiency.

DC1521A: Demo Board for LT3956 80VIN, 80VOUT Constant-Current, Constant-Voltage Converter.

DC1524A-A: Demo Board for the LTC5588-1 200MHz to 6000MHz Quadrature Modulator with Ultrahigh OIP3.