The LTM4676A is a dual 13A or single 26A step-down ?Module? (micromodule) DC/DC regulator with 40ms turn-on time. It features remote configurability and telemetry-monitoring of power management parameters over PMBus? an open standard I2C-based digital interface protocol . The LTM4676A is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.The LTM4676A?s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay? GUI and DC1613 USB-to-PMBus converter and demo kits are available.The LTM4676A is pin-compatible and the improved performance version of the LTM4676. Part Number Turn-on Start-up Time (MAX) (ms) VIN Range (V) VOUT Range (V) Pin-compatible LTM4676 170 4.5 to 26.5 0.5V to 4 (CH0) 0.5 to 5.5 (Both CH) Yes LTM4676A 70 4.5 to 17 0.5 to 5.5 (Both CH) Applications System Optimization, Characterization and Data Mining?in Prototype, Production and Field Environments

The LTC3774 is a dual PolyPhase? current mode synchronous step-down switching regulator controller that drives power blocks, DRMOS or external gate drivers and power MOSFETs. It offers an LTC-proprietary technique that enhances the signal-to-noise ratio of the current sense signal, allowing the use of inductors with very low DC winding resistances as the current sense element for maximum efficiency and reduced jitter.The maximum current sense voltage is programmable from 10mV to 30mV. High speed, low offset remote sense differential amplifiers and a precise 0.6V reference provide accurate output voltages between 0.6V and 3.5V from a wide 4.5V to 38V input supply range. Soft recovery from output shorts or overcurrent minimizes output overshoot. Burst Mode? operation, continuous and pulse-skipping modes are supported. The constant operating frequency can be synchronized to an external clock or linearly programmed from 200kHz to 1.2MHz. Up to six LTC3774 controllers can be paralleled for 1-, 2-, 3-, 4-, 6-, 8- or 12-phase operation.The LTC3774 is available in a 36-lead (5mm ? 6mm) QFN package.Applications Computer Systems Telecom and Datacom Systems Industrial Equipment DC Power Distribution Systems

Demonstration circuit 2116A features the LTC4233/LTC4234 10A/20A Guaranteed SOA Hot Swap™ Controllers. The LTC4233 and LTC4234 are ideally suited for compact power distribution control in 2.9V to 15V applications for hot board insertion protection, high side power switching, and electronic circuit breaker functions.

The LTC3119 is a high efficiency 18V monolithic buck-boost converter that can deliver up to 5A of continuous output current. Extensive feature integration and very low resistance internal power switches minimize the total solution footprint for even the most demanding applications. A proprietary 4-switch PWM architecture provides seamless low noise operation from input voltages above, equal to, or below the output voltage.External frequency programming as well as synchronization using an internal PLL enable operation over a wide switching frequency range of 400kHz to 2MHz. The wide 2.5V to 18V input range is well suited for operation from unregulated power sources including battery stacks and backup capacitors. After start-up, operation is possible with input voltages as low as 250mV.Other features include: output short-circuit protection, thermal overload protection, less than 3?A shutdown current, power good indicator, Burst Mode operation, and maximum power point control.The LTC3119 is offered in thermally enhanced 28-lead 4mm ? 5mm QFN and TSSOP packages.Applications Wide Input Range Power Supplies 1- to 4-Cell Lithium Battery Powered Products RF Power Supplies Solar Battery Chargers System Backup Power Supplies Lead Acid to 12V Regulator

The LT8612 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 3?A of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8612 reducing the input supply current to 1?A. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ?9% of the programmed output voltage as well as fault conditions. The LT8612 is available in a small 3mm ? 6mm 28-lead QFN package with exposed pad for low thermal resistance.APPLICATIONS Automotive and Industrial Supplies General Purpose Step-Down GSM Power Supplies

DC213A: Demo Board for the LTC1406 Low Power, 8-Bit, 20Msps, Sampling A/D Converter.

The LTC2107 is a 16-bit, 210Msps high performance ADC. The combination of high sample rate, low noise and high linearity enable a new generation of digital radio designs. The direct sampling front-end is designed specifically for the most demanding receiver applications such as software defined radio and multi-channel GSM base stations. The AC performance includes, SNR = 80dBFS, SFDR = 98dBFS. Aperture jitter = 45fsRMS allows direct sampling of IF frequencies up to 500MHz with excellent performance.Features such as internal dither, a PGA front-end and digital output randomization help maximize performance. Modes of operation can be controlled through a 3-wire serial interface (SPI).The double data rate (DDR) low voltage differential (LVDS) digital outputs help reduce digital line count and enable space saving designs.Applications Software Defined Radios Military Radio and RADAR Cellular Base Stations Spectral Analysis Imaging Systems ATE and Instrumentation

The LT8580 is a PWM DC/DC converter containing an internal 1A, 65V switch. The LT8580 can be configured as either a boost, SEPIC or inverting converter.The LT8580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8580 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz.The LT8580 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.Additional features such as frequency foldback and soft-start are integrated. The LT8580 is available in tiny thermally enhanced 3mm ? 3mm 8-lead DFN and 8-lead MSOP packages.APPLICATIONS VFD Bias Supplies TFT-LCD Bias Supplies GPS Receivers DSL Modems Local Power Supply

Demonstration circuit 2192B is a fuel cell monitor featuring the LTC6806, a 36-channel fuel cell monitor. Multiple boards can be linked through a 2-wire isolated serial interface (isoSPI™) to monitor a long series of cells in a stack. The DC2192B demo circuit also features reversible isoSPI enabling a redundant communication path. The PCB, components and DuraClik connectors are optimized for low EMI susceptibility and emissions. The DC2192B can communicate to a PC by connecting a DC2792B dual master isoSPI together with DC2026  Linduino® One. The DC2026 must be loaded with the appropriate program (called a sketch) to control the battery stack monitor IC and receive data through a USB serial port. The DC2026C provides a standard SPI interface which can be translated to isoSPI and then connected to a DC2192B isoSPI port (J3/J4 connector). The DC2792B provides two SPI-isoSPI channels for reversible operation.

The LTC2666 is a family of 8-channel, 16-/12-bit ?10V digital-to-analog converters with integrated precision references. They are guaranteed monotonic and have built-in rail-to-rail output buffers. These SoftSpan? DACs offer five output ranges up to ?10V. The range of each channel is independently programmable, or the part can be hardware-configured for operation in a fixed range.The integrated 2.5V reference is buffered separately to each channel; an external reference can be used for additional range options. The LTC2666 also includes A/B toggle capability via a dedicated pin or software toggle command.The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz.Applications Optical Networking Instrumentation Data Acquisition Automatic Test Equipment Process Control and Industrial Automation

The DC2198A is a demonstration system for the LTC2980 16-channel I2C/SMBus/PMBus power system manager with EEPROM. The LTC2980 monitors and controls 16 power supply rails. The DC2198A demonstrates the ability of the LTC2980 to sequence, trim, margin, supervise, monitor, and log faults for sixteen power supply rails. Each power supply channel’s output voltage is monitored and the LTC2980 monitors its own internal die temperature.

The LTC2983 measures a wide variety of temperature sensors and digitally outputs the result, in ?C or ?F, with 0.1?C accuracy and 0.001?C resolution. The LTC2983 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the results. The device can also measure temperature with standard 2-, 3- or 4-wire RTDs, thermistors and diodes. It has 20 reconfigurable analog inputs enabling many sensor connections and configuration options. The LTC2983 includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor.The LTC2983 allows direct interfacing to ground referenced sensors without the need for level shifters, negative supply voltages, or external amplifiers. All signals are buffered and simultaneously digitized with three high accuracy, 24-bit ?? ADCs, driven by an internal 10ppm/?C (maximum) reference.Applications Direct Thermocouple Measurements Direct RTD Measurements Direct Thermistor Measurements Custom Sensor Applications

Demonstration circuit 2220A is a 2A, bidirectional charger/regulator featuring the LTC3643, a bidirectional synchronous step-up charger and step-down converter. DC2220A implements backup by charging a storage capacitor up to approximately 40V in boost mode, when the input voltage is present. It discharges the storage capacitor in buck mode, providing a regulated load voltage 5V when the input is removed. Its wide voltage range, both in capacitor charger mode and in system backup mode, makes it well suited to a wide variety of applications. The ability of the LTC3643 to boost an input rail to a relatively high voltage of 40V, combined with the DC2220 option of adding external capacitor banks, makes this regulator an excellent choice for energy storage applications.

Demonstration circuit 2222A features the LTC®2500-32, LTC2508-32 and LTC2512-24 ADCs. The LTC2500-32, LTC2508-32 and LTC2512-24 are low power, low noise, high speed, 32-bit/24-bit SAR ADCs with an integrated configurable digital averaging filter that operate from a single 2.5V supply. The following text refers to the LTC2508-32 but applies to all parts, the only difference being sample rate and number of bits. The DC2222A demonstrates the DC and AC performance of the LTC2508-32 in conjunction with the DC590 or DC2026 QuikEval™ and DC890 PScope™ data collection boards. Use the DC590 or DC2026 to demonstrate DC performance such as peak-to-peak noise and DC linearity. Use the DC890 if precise sampling rates are required or to demonstrate AC performance such as SNR, THD, SINAD and SFDR. The DC2222A is intended to show recommended grounding, component placement and selection, routing and bypassing for this ADC.

The LTC2512-24 is a low noise, low power, high-performance 24-bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2512-24 features a fully differential input range up to ?VREF, with VREF ranging from 2.5V to 5.1V. The LTC2512-24 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements.The LTC2512-24 simultaneously provides two output codes: (1) a 24-bit digitally filtered high precision low noise code, and (2) a 22-bit no latency composite code. The configurable digital filter reduces measurement noise by lowpass filtering and down-sampling the stream of data from the SAR ADC core, giving the 24-bit filtered output code. The 22-bit composite code consists of a 14-bit code representing the differential voltage and an 8-bit code representing the common mode voltage. The 22-bit composite code is available each conversion cycle, with no cycle of latency.The digital filter can be easily configured for 4 different down-sampling factors by pin strapping. The configurations provide a dynamic range of 108dB at 400ksps and 117dB at 50ksps. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2512-24 devices can be easily synchronized using the SYNC pin.Applications Seismology Energy Exploration Automated Test Equipment (ATE) High-Accuracy Instrumentation

The LTC3875 is a dual output current mode synchronous step-down DC/DC controller that drives all N-channel power MOSFET stages. It employs a unique architecture that enhances the signal-to-noise ratio of the current sense signal, allowing the use of very low DC resistance (DCR) power inductors to maximize efficiency in high current applications. This feature also reduces the switching jitter commonly found in low DCR applications with current mode control.The LTC3875 features two high speed differential amplifiers which can be used to compensate for the voltage drop from the LTC3875 to the load. Its DCR temperature compensated adjustable over current trip points from 10mV to 30mV limits the maximum output current precisely over temperature.A unique thermal balancing function adjusts per phase current to minimize the thermal stress for multichip single output applications. The LTC3875 is available in the 40- lead 6mm ? 6mm (0.5mm pitch) and 40-lead 5mm ? 5mm (0.4mm pitch) QFN packages.APPLICATIONS Servers and Instruments Telecom Systems DC Power Distribution Systems

IO-Link®, the new bi-directional, digital, point-to-point communication standard (IEC 61131-9) offers a standardized mapping of advanced sensor and actuator features into the automation tool environment. This technology leverages small but powerful microprocessors being incorporated into sensors and actuators to improve control, parameterization and diagnostics. TEConcept has developed an 8-Port IO-Link master reference design that demonstrates a robust physical interface built using two LTC2874 IC's. The DC2228A will operate your favorite IO-Link device, controlled by Control Tool software (including IODD Interpreter) via an Ethernet connection. DC2228A operates either with an external 24V supply or, optionally, a Power over Ethernet (PoE) system. For the PoE case, it can be completely powered via an Ethernet connection to power sourcing equipment such as a PoE injector or PoE switch. We recommend a 90W LTPoE++ solution such as the Allnet ALL048900, which comes with its own power adapter.

Demonstration circuit 2234A is a synchronous sepic converter featuring the LT8711 multitopology switching controller. The LT8711 is a current mode PWM DC/DC controller with a dual input LDO to optimize gate driver efficiency. Ultralow 15μA quiescent current in low noise Burst Mode® operation achieves high efficiency at very light loads and helps extend the run-time in battery powered applications when in standby mode. The LT8711 switching frequency can be programmed either via oscillator resistor or external clock over a 100kHz to 750kHz range.

The LT1490A/LT1491A are dual and quad op amps with a low input offset voltage of 500?V max. The LT1490A/LT1491A operate on all single and split supplies with a total voltage of 2V to 44V, drawing only 40?A of quiescent current per amplifier. These amplifiers are reverse supply protected; they draw virtually no current for reverse supply up to 18V. The input range of the LT1490A/LT1491A includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1490A/LT1491A can drive heavy loads; their rail-to-rail outputs drive 20mA. The LT1490A/LT1491A are unity-gain stable and drive all capacitive loads up to 10,000pF when optional 0.22?F and 150? compensation is used.The LT1490A/LT1491A have a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and common mode even when operating on a 3V supply. Built-in resistors protect the inputs for faults below the negative supply up to 15V. There is no phase reversal of the output for inputs 15V below V? or 44V above V?, independent of V+.The LT1490A dual op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications LT1490A is available in a 3mm ? 3mm ? 0.8mm, dual fine pitch leadless package (DFN). The quad LT1491A is available in the 14-pin SO, PDIP and 5mm ? 3mm ? 0.8mm DFN packages.Applications Battery- or Solar-Powered Systems Portable Instrumentation Sensor Conditioning Supply Current Sensing Battery Monitoring Micropower Active Filters 4mA to 20mA Transmitters

The LT1636 op amp operates on all single and split supplies with a total voltage of 2.7V to 44V drawing less than 50?A of quiescent current. The LT1636 can be shut down, making the output high impedance and reducing the quiescent current to 4?A. The LT1636 has a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and common mode, even when operating on a 3V supply. The output swings to both supplies. Unlike most micropower op amps, the LT1636 can drive heavy loads; its rail-to-rail output drives 18mA. The LT1636 is unity-gain stable into all capacitive loads up to 10,000pF when a 0.22?F and 150? compensation network is used.The LT1636 is reverse supply protected: it draws no current for reverse supply up to 27V. Built-in resistors protect the inputs for faults below the negative supply up to 22V. There is no phase reversal of the output for inputs 5V below VEE or 44V above VEE, independent of VCC.The LT1636 op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications the LT1636 available in a 3mm ? 3mm ? 0.8mm dual fine pitch leadless package (DFN).Applications Battery- or Solar-Powered Systems Portable Instrumentation Sensor Conditioning Supply Current Sensing Battery Monitoring MUX Amplifiers 4mA to 20mA Transmitters