Demonstration circuit 901A features the LTC3444 and is a highly efficient, 1.5MHz fixed frequency buck-boost DC/DC converter. The input voltage can range from 3.1V to 5.0V and is suitable for Li-Ion or three-cell NiCd/NiMH battery applications while the output voltage can be set anywhere from 0.8V to 4.2V by injecting a 0.35V to 2.4V control signal. The demo board provides up to 400mA of output current.

Demonstration circuit 903 is a step-up/step-down charge pump dc-dc converter. It comes with two assembly versions, DC903A-A and DC903A-B featuring the 150mA output current LTC3240-3.3 (3.3V output) and LTC3240-2.5 (2.5V output) respectively, each in a tiny 2mm x 2mm DFN package. The DC903A-A and DC903A-B operate with an input voltage from 1.8V to 5.5V. When using the DC903A-A, the output current can reach up to 150mA when the input voltage is above 2.5V. The maximum output current of the DC903A-B is 60mA with a 1.8V input voltage. The DC903A optimizes the output efficiency by operating in the LDO step-down mode during the time the input is higher than the output voltage. When the input voltage drops low enough, The LTC3240 automatically switches to charge-pump doubling mode to extend system run-time. Built-in soft-start limits inrush current at turn-on, and short-circuit current limit/thermal protection help the part survive a continuous short-circuit. Additionally, the DC903A features Automatic Burst Mode operation at light load to achieve low supply current (65µA, no load).

DC928A: Demo Board for the LTC3452 Synchronous Buck-Boost MAIN/CAMERA White LED Driver.

DC947A: Demo Board for the LT3740 Wide Operating Range, Valley Mode, No RSENSE Synchronous Step-Down Controller.

Demonstration circuit 952 is a current mode synchronous switching regulator featuring the LTC3810. The circuit is configured as a synchronous step-down regulator operating at 230kHz switching frequency. Output voltage is 12V at 6A maximum load. The input voltage range is 13V to 80V.

Demonstration circuit 960 is a high voltage, current-mode DC/DC step-down controller featuring the LTC3824 in a small 10-pin MSOP package. The board operates from an input voltage of 5.5V to 60V and outputs 5V @ 2A. The converter uses a P-channel MOSFET for the main switch resulting in a low parts count design. Operating frequency is set to 200kHz with the option to accept a synchronized external clock.

Demonstration circuit 965A is a single output high frequency step-down DC/DC converter featuring the low quiescent current LTC3835-1 in a 16-pin narrow SSOP package. The DC965A is programmed to generate a regulated 3.3V@5A output from a 4.5V to 36V input voltage. The LTC3835-1 is similar to the LTC3835 but has reduced functionality (it does not have PGOOD, ExtVCC or CLOCKOUT pins).

DC968A-A Demo Board for: LT1952 Single Switch Synchronous Forward Controller LTC3900 Synchronous Rectifier Driver for Forward Converters LT4430 Secondary-Side Optocoupler Driver

The ADL5315 is a wide input current range precision high-side current mirror featuring a stable and user-adjustable input voltage. It is optimized for use with PIN photodiodes, but its flexibility and wide operating range make it suitable for a broad array of additional applications. The part provides a compact solution for the common and often challenging problem of interfacing an optical power monitoring device (such as a log amp) to the cathode-side of a PIN photodiode. The ADL5315 mirrors the current at the cathode at a 1:1 ratio over a six-decade range, producing an output exactly proportional to the reference current monitored. Competing optical current monitors have much higher mirror ratios over narrower dynamic ranges, rendering proportional outputs at very low input currents impossible, while discrete solutions are more tedious to implement and may require significantly more board space.

The ADL5315 is a wide input current range precision high-side current mirror featuring a stable and user-adjustable input voltage. It is optimized for use with PIN photodiodes, but its flexibility and wide operating range make it suitable for a broad array of additional applications. The part provides a compact solution for the common and often challenging problem of interfacing an optical power monitoring device (such as a log amp) to the cathode-side of a PIN photodiode. The ADL5315 mirrors the current at the cathode at a 1:1 ratio over a six-decade range, producing an output exactly proportional to the reference current monitored. Competing optical current monitors have much higher mirror ratios over narrower dynamic ranges, rendering proportional outputs at very low input currents impossible, while discrete solutions are more tedious to implement and may require significantly more board space.