Demonstration circuit 1215 is a step-down converter, using the LTC3605 monolithic synchronous buck regulator. The DC1215A has a maximum input voltage 15V, and is capable of delivering up to 5A of output current at a minimum input voltage of 4V. The output voltage of the DC1215A can be set as low as 0.6V, the reference voltage of the LTC3605.

The LTC3230 is a low noise charge pump DC/DC converter designed to drive 4 Main LEDs and 1 Sub LED, plus two 200mA linear regulators to provide additional system power. The LTC3230 charge pump requires only four small ceramic capacitors and one current set resistor to form a complete LED power supply and current controller.Built-in soft-start circuitry prevents excessive inrush cur- rent during start-up and mode changes. High switching frequency enables the use of small external capacitors. Main and Sub full-scale current settings are programmed by a single external resistor. Charge pump efficiency is optimized based on the voltage across the LED current sources. The part powers up in 1x mode and automatically switches to the next higher mode, 1.5x and subsequently 2x, whenever any LED current source approaches dropout.Two 200mA linear regulators have independent enable and output voltage select pins. Each regulator can be set to one of three pre-selected output voltages with tri-level input pins. The regulators may be enabled independently of the charge pump.The LTC3230 is available in a low profile (0.75mm) 3mm x 3mm 20-lead QFN package.Applications Multi-LED Driver and Dual LDO Supplies for Cell Phone, PDA, Digital Camera and PND Applications?

DC1242A: Demo Board for the LTC3537 - 2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO

Demonstration circuit 1247A features the LT3582 an I2C Programmable Boost and Single Inductor Inverting DC/DC Converters with OTP. It converts a 2.7V-5.5V source to two outputs, a positive and a negative. The positive output can be programmed from 3.2V to 12.775V at 25mV intervals and the negative from -1.2V to -13.95V at 50mV intervals, all via the QuickEval™ System. A DC590B is needed for evaluation of this demo board. Table 1 below shows the maximum expected load currents for some output/input combinations. Check Maximum Load Current section on datasheet for other combinations. The LT3582 features all integrated switches and feedback resistors, a low noise control scheme, positive output disconnect function, low quiescent current, built in softstart.

Demonstration circuit DC1256A is a single-battery standalone battery charger that can support any version ofthe LTC4012 family of parts. The LTC4012 family of charge controller IC’s do not support charge termination for any specific battery chemistry. Any charger termination, if necessary, is accomplished outside the LTC4012 with the most common method using a microcontroller. The DC1256A is shipped with the LTC4012-2 installed,which is optimized for Li-ion charge applications using a 4.2V/cell float voltage.The charger output voltage is programmed by jumpers to support 1, 2, 3 and 4 series stack Li-ion batteries. The input voltage is can be between 6V and 20V with the maximum voltage of the Demo Board design limited by the input capacitor voltage ratings. To reach full charge,the minimum input voltage must be greater than the float voltage setting.

DC1264A: Demo Board for the LTC6410-6 Low Distortion, Low Noise Differential IF Amplifier with Configurable Input Impedance

Demonstration circuit 1286A is DC/DC boost converter featuring the LTC3862EGN/-1 constant frequency current mode boost controllers. The DC1286A-A (LTC3862) operates over 5V to 36V input and provides 2A-5A of output current at 48V output. The DC1286A-B (LTC3862-1, higher VIN min and higher gate drive) operates over 8V to 36V input and provides 3A-5A of output current at 48V output. The 200kHz constant frequency operation results in small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over wide load range with no minimum load requirement. The demonstration circuit can be easily modified to generate different output voltages.

Demonstration circuit 1290A is a high frequency synchronous step-down converter featuring the LTC3775EUD. The package style for the LTC3775EUD is a 16-pin 3mm x 3mm QFN. Two versions of the demonstration board are available. DC-1290A-A has been optimized for 5V to 26V input and typically provides 1.2V/15A, while the DC1290A-B is optimized for 5V to 36VIN range and typically provides 1.2V/10A.

DC1296A: Demo Board for the LTC3556 High Efficiency USB Power Manager with Dual Buck and Buck-Boost DC/DCs

DC1300A-B: Demo Board for: LTC3725 - Single-Switch Forward Controller and Gate Driver LTC3726 - Secondary-Side Synchronous Forward Controller