The LTC4279 is an autonomous single port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1, Type 2 and LTPoE++ compliant Power over Ethernet (PoE) systems. The LTC4279 provides fully autonomous IEEE 802.3 and LTPoE++ compliant operation without a microcontroller. The LTC4279 simplifies PSE implementation, requiring only a single supply and a small number of passive support components.The LTC4279 delivers lowest-in-industry heat dissipation by utilizing a low-RDS(ON) external MOSFET and a 0.1? sense resistor, eliminating the need for expensive heat sinks and increasing efficiency.PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with physical layer classification and a 2.5 second backoff timer.Legacy and custom PDs are supported with pin-selectable LEGACY and UltraPWR modes. LEGACY mode detects and powers pre-IEEE specification PDs. UltraPWR mode aggressively turns on and powers custom PDs requiring high inrush and/or operational currents.Applications PoE PSE Endpoints (Switch/Router) PoE Midspan Power Injectors Power Forwarders Femto Cells Security Systems

Demonstration circuit 2583 is an Ethernet Alliance™ certified IEEE 802.3bt compliant Power over Ethernet (PoE) powered device (PD). It features the LT4294 PD interface controller and the LT4321 PoE ideal diode bridge controller.

The LTC3290 is a high voltage boost charge pump with a wide 4.5V to 55V input voltage range that can deliver up to 50mA of output current.When the VSET pin is grounded, the LTC3290 operates as a standard boost charge pump, boosting the VOUT output to a maximum of the sum of the VIN and VAUX input supplies. An external resistor divider can be used on the VOUT, FB and GND pins to set the output voltage to any value between 1V and VIN + VAUX with hysteretic Burst?Mode operation.Alternatively, the device can be configured in a VIN tracking mode, in which the VOUT pin regulates at a fixed offset above the VIN pin. The offset voltage is programmed with external resistors, one from the VOUT to the VSET pin and the other from the FB pin to GND. The maximum output voltage is limited to VIN + VAUX.The LTC3290 is available in a thermally enhanced 10-pin MSOP package.Applications High Efficiency General Purpose High Voltage Boost Supplies? High Side N-FET Driver Industrial/Automotive Power Switching? VIN Tracking Supply

Demonstration Circuit 2611A features the LTC6955, Ultralow Jitter 11 Output Fanout Buffers. By default, the DC2611A is powered from a single 3.3V supply. An option is provided to power to the DC2611A from dual supplies, allowing for the LTC6955’s output supply pins to connect to an LTC Silent Switcher® and the LTC6955 input supply pin to connect to a low noise LDO. The differential inputs and six of the differential outputs are populated with 0.5" spaced SMA connectors. These outputs are AC-coupled with 50Ω transmission lines making them suitable to drive 50Ω impedance instruments. All registered trademarks and trademarks are the property of their respective owners. The remaining four differential outputs are terminated with 100Ω. A calibration path is provided to aid in accurate LTC6955 propagation delay measurements. The calibration path can be also reconfigured as a DC path, which allows for a convenient method of locking the LTC6955 outputs to an external PLL/VCO.

Demonstration circuit 2616A-D features a polyphase design using the LTM4647EY, a 30A high efficiency, switch mode step-down power µModule regulator. The input voltage range is from 6V to 15V. To use DC2616A-D for input voltage range from 4.7V to 6V, connect INTVCC to SVIN (change R22, R42, R55, R68 from OPT to 0Ω), DRVCC to VIN (change R21, R38, R52, R65 from 0Ω to OPT, R2, R39, R53, R66 from OPT to 0Ω). The output voltage range is 0.6V to 1.8V. The DC2616A-D can deliver a nominal 120A output current with four LTM4647 modules in parallel. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE_PLLIN jumper selects pulseskipping mode for noise sensitive applications or burst mode operation in less noise sensitive applications. The MODE_PLLIN pin also allows the LTM4647 to synchronize to an external clock signal. The phase shift between two adjacent phases is 90 degrees. DC2616A-D has the option of choosing both internal and external compensation circuit for LTM4647. The LTM4647 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC2616A-D.

Demonstration circuit 2638A-A is a high efficiency, high density, μModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 3.3V, and it can supply 100A maximum load current. The demo board has two LTM4678 μModule® regulators, and the LTM4678 is a dual 25A or single 50A step-down regulator with PMBus power system management. Please see LTM4678 data sheet for more detailed information. DC2638A-A powers up to default settings and produce power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status. GUI Download: The software can be downloaded from: LTpowerPlay. For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4678 Quick Start Guide.

Demonstration circuit 2638A-D is a high efficiency, high density, μModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 3.3V, and it can supply 250A maximum load current. The demo board has five LTM4678 μModule® regulators, and the LTM4678 is a dual 25A or single 50A step-down regulator with PMBus power system management. Please see LTM4678 data sheet for more detailed information. DC2638A-D powers up to default settings and produce power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status. GUI Download: The software can be downloaded from: LTpowerPlay. For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4678 Quick Start Guide.

DC264A: Demo Board for the LTC1628 High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator.

The LTC6363 family consists of four fully differential, low power, low noise amplifiers with rail-to-rail outputs optimized to drive SAR ADCs. The LTC6363 is a standalone differential amplifier, where the gain is typically set using four external resistors. The LTC6363-0.5, LTC6363-1, and LTC6363-2 each have internal matched resistors to create fixed gain blocks with gains of 0.5V/V, 1V/V, and 2V/V respectively. Each of the fixed-gain amplifiers features precision laser trimmed on-chip resistors for accurate, ultrastable gain and excellent CMRR.Applications 20-Bit, 18-Bit and 16-Bit SAR ADC Drivers Single-Ended-to-Differential Conversion Low Power ADC Drivers Level Shifter Differential Line Drivers Battery-Powered Instrumentation

DC265A: Demo Board for the LTC1628 High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator.

The LTC7132 is a dual output PolyPhase DC/DC synchronous step-down monolithic regulator with an I2C-based PMBus compliant serial interface. The regulator employs a constant-frequency current mode architecture, together with a unique scheme to provide excellent performance in sub-milliohm DCR applications. The LTC7132 is supported by the LTpowerPlay? software development tool with graphical user interface (GUI).Programmable loop compensation allows the regulator to be compensated digitally. The switching frequency, channel phasing and device address can be programmed both by the digital interface as well as the external configuration resistors. Additionally, parameters can be set via the digital interface and stored in EEPROM. Both outputs have independent power good indicators and FAULT function.The LTC7132 can be configured to operate in discontinuous (pulse-skipping) mode or forced continuous conduction mode. Each channel can deliver up to 25A of loadcurrent; the total current capability will depend on the APPLICATIONS total power dissipations on both channels.POWER CONVERSION Wide VIN Range: 4.5V to 20V VOUT Range: 0.5V to 3.5V (with Ultralow DCR Setting); 0.5V to 5.5V (Typical DCR Setting) Accurate PolyPhase? Current Sharing for Up to 6 Phases Available in a 140-Lead (9mm ? 11.25mm ? 2.22mm) BGA PackageAPPLICATIONS Telecom, Datacom and Storage Systems Industrial and Point-of-Load Applications

Demonstration circuit DC266B-A is for the evaluation of 8th order filter circuits using an LTC1562 (no dash) and DC266B-B for an LTC1562-2. LTC1562 and LTC1562-2 are quad 2nd order active-RC filter building blocks. Each 2nd order section has an integrator trimmed with internal capacitors and resistors to 100kHz and 200 kHz for the LTC1562 and LTC1562-2 respectively. The trimmed frequency error is ±0.6% for the LTC1562A and ±1.5% for the LTC1562-2. The LTC1562 or LTC1562-2 2nd order sections can be configured with external resistors to implement lowpass, bandpass or highpass filters.

Demonstration circuit 2672A-A is a complete non-isolated 48V input, dual-output, high efficiency, high density µModule regulator with 30V to 58V input range. Each output can supply 25A maximum load current. The demo board has a LTM4664 µModule regulator, which is a dual 25A or single 50A step-down regulator with digital power system management. Please see the LTM4664 datasheet for more detailed information. DC2672A-A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay™ onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Demonstration circuit 2718A is a no-opto flyback converter featuring the LT8316. The demo board outputs 12V and maintains tight regulation with a load current from 30mA to 3A. It is optimized to operate over a wide 100V to 600V DC input voltage range. Output voltage accuracy stays within ±5% over the entire input voltage and load range. The LT8316 is a high voltage flyback controller. No optoisolator is needed for regulation. The part samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation. The LT8316 is available in a thermally enhanced 20-pin TSSOP package with four pins removed for high-voltage spacing. The LT8316 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 2718A.

Demonstration circuit 2785A-A features the LTM4668 µModule® regulator, a Quad 1.2A high efficiency step-down regulator. DC2785A-A has an operating input voltage range of 2.7V to 17V and can provide an output current of up to 1.5A. The output voltage can be programmed from 0.6V up to 1.8V. The LTM4668 is a complete DC/DC point of load regulator in a thermally enhanced 6.25mm × 6.25mm × 2.1mm BGA package requiring only a few input and output capacitors. External clock synchronization is available through the CLKIN turret. The LTM4668 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2785A-A.

Demonstration circuit 2786A is a single output high voltage non-isolated synchronous step-down converter that drives an all N-channel MOSFET power stage. It features the LTC7800, a low quiescent current high frequency (programmable fixed frequency from 320kHz up to 2.25MHz) synchronous step-down DC/DC controller housed in a small 3mm x 4mm QFN package. This DC2786A operates over an input voltage range from 8V to 40V, while the LTC7800 can operate up to 60V. This demo board produces a 3.3V output voltage with up to 10A output current, and is configured with a sense resistor for current sensing. A mode selector allows the DC2786A to operate in forced continuous operation, pulse-skipping or Burst Mode® operation during light loads. The LTC7800 features two integrated 5V gate drivers with 20ns deadtime which is good for GaN transistors or logic-level MOSFETs to maximize efficiency. The EXTVCC pin permits the LTC7800 to be powered from the output of the switching regulator or other available source, reducing power dissipation and improving efficiency. Please refer to the LTC7800 data sheet for a complete description of the part operation and application information.

The 8-bit LTC1665 and 10-bit LTC1660 integrate eight accurate, serially addressable digital-to-analog converters (DACs) in tiny 16-pin narrow SSOP packages. Each buffered DAC draws just 56?A total supply current, yet is capable of supplying DC output currents in excess of 5mA and reliably driving capacitive loads to 1000pF. Sleep mode further reduces total supply current to 1?A.Proprietary, inherently monotonic voltage interpolation architecture provides excellent linearity while allowing for an exceptionally small external form factor.Ultralow supply current, power-saving Sleep mode and extremely compact size make the LTC1665 and LTC1660 ideal for battery-powered applications, while their ease of use, high performance and wide supply range make them excellent choices as general purpose converters.Applications Mobile Communications Remote Industrial Devices Automatic Calibration for Manufacturing Portable Battery-Powered Instruments Trim/Adjust Applications

Demonstration circuit 2807A features the LTC6560 single channel transimpedance amplifier (TIA) with output multiplexing. The DC2807A accepts voltage pulses and converts them to current for the TIA. The LTC6560, which features 74kΩ transimpedance gain and 30µA linear input current range, is ideal for LIDAR receivers using avalanche photodiodes (APD). The LTC6560 operates from 5V single supply and consumes only 90mW. Utilizing the LTC6560’s output MUX, multiple LTC6560 devices can combine into a single output. The LTC6560’s fast overload recovery makes it well suited for LIDAR receivers. The LTC6560’s single-ended output can swing 2VP-P into a 100Ω load. The LTC6560 is packaged in a compact 3mm × 3mm 16-pin leadless QFN package with an exposed pad for thermal management and low inductance.

The LTC2066/LTC2067/LTC2068 are single, dual, and quad low power, zero-drift, 100kHz amplifiers. The LTC2066/LTC2067/LTC2068 enable high resolution measurement at extremely low power levels.Typical supply current is 7.5?A per amplifier with a maximum of 10?A. The available shutdown mode has been optimized to minimize power consumption in duty-cycled applications and features low charge loss during powerup, reducing total system power.The LTC2066/LTC2067/LTC2068?s self-calibrating circuitry results in very low input offset (5?V max) and offset drift (0.02?V/?C). The maximum input bias current is only 35pA and does not exceed 150pA over the full specified temperature range. The extremely low input bias current of the LTC2066/LTC2067/LTC2068 allows the use of high value power-saving resistors in the feedback network.With its ultralow quiescent current and outstanding precision, the LTC2066/LTC2067/LTC2068 can serve as a signal chain building block in portable, energy harvesting and wireless sensor applications.The LTC2066 is available in 6-lead SC70 and 5-lead TSOT-23 packages. The LTC2067 is available in 8-lead MSOP and 10-lead DFN packages. The LTC2068 is available in 14-lead TSSOP and 16-lead 3mm ? 3mm QFN packages. These devices are fully specified over the ?40?C to 85?C and ?40?C to 125?C temperature ranges.Applications Signal Conditioning in Wireless Mesh Networks Portable Instrumentation Systems Low-Power Sensor Conditioning Gas Detection Temperature Measurement Medical Instrumentation Energy Harvesting Applications Low Power Current Sensing

Demonstration circuit 2859A is a step-up/-down DC/DC converter with a 3V to 36V input voltage range and a 12V output capable of 1.5A from 12 to 36VIN, 0.8A at 6VIN, and 0.25A at 3VIN, featuring the LTM8083. The LTM8083 data sheet gives complete description of the device, including operation and application information. The data sheet must be read in conjunction with this demo manual prior to working on or modifying DC2859A. KEY FEATURES SYNC Input for External Synchronization CTRL Input for Adjusting Current Limit Threshold