The LTM4600 is a complete 10A, DC/DC step down power supply. Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over an input voltage range of 4.5V to 20V, the LTM4600 supports an output voltage range of 0.6V to 5V, set by a single resistor. This high efficiency design delivers 10A continuous current (14A peak), needing no heat sinks or airflow to meet power specifications. Only bulk input and output capacitors are needed to finish the design.The low profile package (2.82mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. High switching frequency and an adaptive on-time current mode architecture enables a very fast transient response to line and load changes without sacrificing stability. Fault protection features include integrated overvoltage and short circuit protection with a defeatable shutdown timer. A built-in soft-start timer is adjustable with a small capacitor.The LTM4600 is packaged in a compact (15mm ? 15mm) and low profile (2.82mm) over-molded Land Grid Array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM4600 is RoHS compliant.Applications Telecom and Networking Equipment Servers Industrial Equipment Point of Load Regulation

Demonstration circuit 832 is a dual output, dual input regulator consisting of two LDO linear regulators, based on the LT3028 monolithic linear regulator in the 5×3 DFN-16 package. Each independent input has a voltage range of 2.3V to 20V, with one output (VOUT1) capable of delivering up to 500mA of output current, and the other output (VOUT2) capable of delivering up to 100mA of output current. The two output voltages are set independently with jumpers; each can be set to 2.5V, 3.3V, 5V or a user-defined value (two jumper options for this). The DC quiescent current is typically only 50uA (for the entire IC) at no load.

Demonstration circuit 833 is an ultralow dropout voltage supply using the 1.5A output current LTC3026 linear regulator in a small 3mm × 3mm 10-Pin DFN package. The DC833 has an input voltage range from 1.14V to 3.5V when the internal boost converter is enabled, and a maximum input voltage of 5.5V when an external source is supplied. The output voltage jumper-selectable and can be set to 0.8V, 1.2V, 1.5V, 1.5V, 1.8V or a user-defined value between 0.4V and 2.6V. The 0.4V reference of the LTC3026 allows the DC833 to supply power to very low voltage applications. The DC833 is also an excellent choice for post regulation of step-down switching regulators, creating a high efficiency low-noise supply. The DC833 comes assembled with small ceramic capacitors, showing the LTC3026's ability to maintain stability with ceramic output capacitors.

The LT3477 is a current mode, 3A DC/DC step-up converter with dual rail-to-rail current sense amplifiers and an internal 3A, 42V switch. It combines a traditional voltage feedback loop and two unique current feedback loops to operate as a constant-current, constant-voltage source. Both current sense voltages are set at 100mV and can be adjusted independently using the IADJ1 and IADJ2 pins. Efficiency of up to 93% can be achieved in typical applications. The LT3477 features a programmable soft-start function to limit inductor current during start-up. Both inputs of the error amplifier are available externally allowing positive and negative output voltages (boost, inverting, SEPIC, Flyback). The switching frequency is programmable from 200kHz to 3.5MHz through an external resistor.Available in thermally enhanced 20-pin (4mm ? 4mm) QFN and 20-pin TSSOP packages, the LT3477 provides a complete solution for both constant-voltage and constantcurrent applications.Applications High Power LED Driver DSL Modems Distributed Power Input/Output Current Limited Boost, SEPIC, Inverting, Flyback Converters Constant-Voltage, Constant-Current Source

Demonstration circuit 862 is a micropower regulated charge pump DC/DC converter featuring the 60mA output LTC3221 in a 2mmx2mm DFN package. It comes in three assembly versions, DC862A-A, DC862A-B and DC862A-C, featuring the LTC3221EDC-3.3 (fixed 3.3V output), the LTC3221EDC-5 (fixed 5V output) , and LTC3221EDC (adjustable output set to 3V), respectively. The demo board input voltage range depends on the IC used; for the 3.3V output DC862A-A, the input voltage range is 1.8V to 4.4V. The LTC3221's low 8µA no-load quiescent current is even lower than the self-discharging current of many batteries. By employing a constant current to charge the output, the output ripple is low even at high input and light load, and is fairly constant over the full input voltage range.

DC868A: Demo Board for the LTC3827-1 Low IQ, Dual, 2-Phase Synchronous Step-Down Controller.

Demonstration circuit 879 is a Micropower Synchronous Step-Up Converter with Output Disconnect featuring the LTC3525-3.3 and LTC3525-5. The LTC3525 is a high performance Burst Mode operation only, synchronous boost converter. The LTC3525 incorporates a feature that maximizes efficiency by adjusting the peak and valley of the inductor current as a function of load. The demo board has two assembly versions: DC879A-A and DC879A-B. The DC879A-A offers fixed 3.3V output. The DC879A-B offers fixed 5V output. They offer a compact, high efficiency solution in single cell or dual cell alkaline or Li-ion applications. Only three small external components are required.

The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay? software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See comparison to LTC3887 below. VOUT Start-Up Time Max VOUT0/1 Fast ADC Mode for 1 Parameter LTC3887/LTC3887-1 35ms 5.5V/5.5V No LTC3880/LTC3880-1 120ms 4V/5.4V No Applications High Current Distributed Power Systems Telecom, Datacom and Storage Systems Intelligent Energy Efficient Power Regulation

DC208A-A: Demo Board for the LTC1559 Backup Battery Controller with Fixed Output.

The LTC6655 is a complete family of precision bandgap voltage references, offering exceptional noise and drift performance. This low noise and drift is ideally suited for the high resolution measurements required by instrumentation and test equipment. In addition, the LTC6655 is fully specified over the temperature range of ?40?C to 125?C, ensuring its suitability for demanding automotive and industrial applications. Advanced curvature compensation allows this bandgap reference to achieve a drift of less than 2ppm/?C with a predictable temperature characteristic and an output voltage accurate to ?0.025%, reducing or eliminating the need for calibration.The LTC6655LN Low Noise comes with a noise reduction pin that enables reduction of wideband noise with the addition of a single capacitor.The LTC6655 can be powered from as little as 500mV above the output voltage to as much as 13.2V. Superior load regulation with source and sink capability, coupled with exceptional line rejection, ensures consistent performance over a wide range of operating conditions. A shutdown mode is provided for low power applications.The LTC6655 references are offered in an 8-lead MSOP package and an 8-lead LS8 package. The LS8 is a 5mm ? 5mm surface mount hermetic package that provides outstanding stability.APPLICATIONS Instrumentation and Test Equipment High Resolution Data Acquisition Systems Weigh Scales Precision Battery Monitors Precision Regulators Medical Equipment