DC1226A: Demo Board for the LTC3529 1.5A, 1.5MHz Step-Up DC/DC Converter in 2mm × 3mm DFN

Demonstration circuit 1231A is a Dual Output, Dual Phase 5A Synchronous Buck Converter featuring the LTC3850EGN. The entire circuit, including the bulk output capacitors, fit within a 1.04” × 0.94” area on all layers. The package style for the LTC3850EGN is a 28-lead narrow plastic SSOP. The main features of the board include rail tracking, an internal 5V linear regulator for bias, RUN pins for each output and a PGOOD signal and a Mode selector that allow the converter to run in CCM, pulse skip or Burst Mode operation. Synchronization to an external clock is also possible through some minor component changes. Two versions of the board are available. DC-1231A-A has an on-board sense resistor for current feedback, while the DC1231A-B is configured with a DCR sense circuit that allows the converter to use the inductor’s DCR as the sense element instead of the on-board sense resistors to save cost and board space and improves efficiency.

The LT5579 mixer is a high performance upconverting mixer optimized for frequencies in the 1.5GHz to 3.8GHz range. The single-ended LO input and RF output ports simplify board layout and reduce system cost. The mixer needs only ?1dBm of LO power and the balanced design results in low LO signal leakage to the RF output. At 2.6GHz operation, the LT5579 provides high conversion gain of 1.3dB, high OIP3 of +26dBm and a low noise floor of ?157.5dBm/Hz at a ?5dBm RF output signal level. The LT5579 offers a high performance alternative to passive mixers. Unlike passive mixers, which have conversion loss and require high LO drive levels, the LT5579 delivers conversion gain at significantly lower LO input levels and is less sensitive to LO power level variations. The lower LO drive level requirements, combined with the excellent LO leakage performance, translate into lower LO signal contamination of the output signal.Applications GSM/EDGE, W-CDMA, UMTS, LTE and TD-SCDMA Basestations 2.6GHz and 3.5GHz WiMAX Basestations 2.4GHz ISM Band Transmitters High Performance Transmitters

DC1234B: Demo Board for the LT3782 2-Phase Step-Up DC/DC Controller.

DC1251A-A: Demo Board for LTC6601-1 - Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Configurable Filter/ADC Driver

DC1257B: Demo Board for the LTC6416 2GHz Low Noise Differential 16-Bit ADC Buffer

Demonstration circuit DC1259A is a single-battery battery- backup controller featuring the LTC4110. The LTC4110 controller provides all the features and functions to offer a complete standalone battery-backup system. The LTC4110 is a multi-chemistry flyback battery charger and discharger that is scalable with other LTC4110s to allow a larger battery array for increased capacity and/or redundancy. The demo board requires a 12V input voltage and is initially configured to charge a 3 Li-Ion Smart Battery at 1A; the charge voltage is 12.6V. However, the Demo board can be easily configured for a standard battery as well. A SMBus interface is offered to allow host communications in control and status and/or support Smart Batteries. However, no host is required to use the LTC4110.

Demonstration circuit 1261A features the LTM8022 step-down μModule® regulator delivering a 3.3V/1A output from a 4.5V to 36V input supply. As a step-down converter, the LTM8022 requires a minimum amount of headroom to keep the output in regulation. Current sharing with another LTM8022 is enabled by tying the VIN, VOUT and SHARE pins together to support higher output loads.

Demo circuit DC1274A features the LTM8040 36V, 1A step-down constant current μModule® LED driver. The demonstration circuit is designed to drive a single LED or string of LEDs at up to 1A from a wide input voltage range of 4V to 36V. The maximum LED string voltage is 13V and the minimum voltage varies depending upon the BIAS pin supply arrangement.

Demonstration Circuit 1279 is a full-featured, multitopology LED driver with 1.5A switch current featuring the LT3518. The board is optimized to drive a 330mA LED string with a total LED voltage between the input voltage and 40V in a boost topology. The input voltage range (VIN) is 3V to 30V, and the supply pin that powers the switcher (PVIN) has an input voltage range of 3V to 40V.