Analog Devices Inc./Maxim Integrated

The LTC7880 is a dual PolyPhase®DC/DC synchronous step-up switching regulator controller with I2C-based PMBus compliant serial interface. This controller employs a constant-frequency, current-mode architecture, with high voltage input and output capability along with programmable loop compensation. The LTC7880 is supported by the LTpowerPlay™ software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed both by digital interface as well as external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. The gate drive for the LTC7880 can be programmed from 6.3V to 9V to maximize efficiency. Both outputs have an independent power good indicator andFAULTfunction.The LTC7880 can be configured for discontinuous (pulse-skipping) mode or continuous inductor current mode.ApplicationsAutomotive Always-On and Start-Stop SystemsIndustrial and Point of Load ApplicationsAll registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 5408150, 6580258, 6304066, 7420359, 8786268 Patent Pending. Licensed under U.S. Patent 7000125 and other related patents worldwide.

The LTC7883 is a quad, PolyPhase DC/DC synchronous step-down switching regulator controller with PMBus compliant serial interface. It uses a constant frequency, leading-edge modulation, voltage mode architecture for excellent transient response and output regulation. Each PWM channel can produce output voltages from 0.1V to 5.25V using a wide range of 3.3V compatible power stages, including power blocks, DrMOS or discrete FET drivers. LTC7883 devices can operate in parallel, supporting ideal phasor positioning for PolyPhase rails up to 8-phases.System configuration and monitoring is supported by the LTpowerPlay®software tool. The LTC7883 serial interfaces can read back input voltage, output voltage and current, temperature and fault status. Most operating parameters can be set via the digital interfaces or stored in internal EEPROM for use at power-up. Switching frequency and phase, output voltage and device address can also be set using external configuration resistors.APPLICATIONSHigh Current Distributed Power SystemsServers, Network and Storage EquipmentIntelligent Energy Efficient Power Regulation

The LTC7890 is a high performance, dual step-down, dc-to-dc switching regulator controller that drives all N-channel synchronous gallium nitride (GaN) field effect transistor (FET) power stages from input voltages up to 100 V. The LTC7890 solves many of the challenges traditionally faced when using GaN FETs. The LTC7890 simplifies the application design while requiring no protection diodes and no other additional external components compared to a silicon metal-oxide semiconductor field effect transistor (MOSFET) solution.The internal smart bootstrap switches prevent overcharging of the BOOSTx pin to the SWx pin high-side driver supplies during dead times, protecting the gate of the top GaN FET. The LTC7890 internally optimizes the gate driver timing on both switching edges to achieve smart near zero dead times, significantly improving efficiency and allowing for high frequency operation, even at high input voltages. Alternatively, the user can adjust the dead times with external resistors for margin or to tailor the application.The gate drive voltage of the LTC7890 can be precisely adjusted from 4 V to 5.5 V to optimize performance and to allow the use of different GaN FETs or even logic level MOSFETs.APPLICATIONSIndustrial power systemsMilitary avionics and medical systemsTelecommunications power systems

The LTC®7893 is a high performance, step-up, dc-to-dc switching regulator controller that drives all N-channel synchronous gallium nitride (GaN) field effect transistor (FET) power stages from output voltages up to 100V. The LTC7893 solves many of the challenges traditionally faced when using GaN FETs. The LTC7893 simplifies the application design while requiring no protection diodes and no other additional external components compared to a silicon metal-oxide semiconductor field effect transistor (MOSFET) solution.The internal smart bootstrap switches prevent overcharging of the BOOST pin to the SW pin high-side driver supply during dead times, protecting the gate of the top GaN FET. The dead times of the LTC7893 can optionally be optimized with external resistors for margin or to tailor the application for higher efficiency and allowing for high frequency operation.The gate drive voltage of the LTC7893 can be precisely adjusted from 4V to 5.5V to optimize performance, and to allow the use of different GaN FETs, or even logic level MOSFETs. When biased from the boost converter regulator output, the LTC7893 can operate from an input supply as low as 1V after start-up.Automotive and Industrial Power Systems Military Avionics and Medical Systems Telecommunications Power Systems

The LTC8043 is a serial-input 12-bit multiplying digital-to-analog converter (DAC). It is a superior pin compatible replacement for the DAC-8043. Improvements include better accuracy, better stability over temperature and supply variations, lower sensitivity to output amplifier offset, tighter timing specifications and lower output capacitance.An easy-to-use 3-wire serial interface is well-suited to remote or isolated applicationsThe LTC8043 is extremely versatile. It can be used for 2-quadrant and 4-quadrant multiplying, programmable gain and single supply applications, such as noninverting voltage output mode.Parts are available in 8-pin SO and PDIP packages and are specified over the extended industrial temperature range, –40°C to 85°C.ApplicationsProcess Control and Industrial AutomationRemote Microprocessor-Controlled SystemsDigitally Controlled Filters and Power SuppliesProgrammable Gain AmplifiersAutomatic Test Equipment

The LTC9101-1/LTC9102/LTC9103 chipset is a 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 2, 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC9101-1/LTC9102/LTC9103 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC9101-1/LTC9102/LTC9103 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON)external MOSFETs and 0.1Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply, resulting in significant BOM cost savings.Advanced power management features include per-port 14‑bit current/power monitoring, programmable current/power limits, and versatile fast shut-down of preselected ports. An advanced power management host software layer is available. PD detection uses a proprietary multipoint detection mechanism ensuring excellent immunity from false PD identification. Autoclass and 5-event physical classification are supported. The LTC9101-1/LTC9102/LTC9103 includes an I2C serial interface operable up to 1MHz. The LTC9101-1/LTC9102/LTC9103 is pin or I2C programmable to negotiate PD delivered power up to 71.3W.APPLICATIONSPoE PSE Switches/Routers and Midspans

The LTC9101-2A/LTC9102chipset is a (up to) 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and 2 compliant Power over Ethernet (PoE) systems. The LTC9101-2A/LTC9102 is designed to power compliant 802.3af and 802.3at PDs. The LTC9101-2A/LTC9102 chipset delivers lowest-in-industry heat dissipation using low RDS(ON)external MOSFETs and 0.1Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive optocouplers and a complex isolated 3.3V supply, resulting in significant bill of materials (BOM) cost savings.Advanced power management features include per-port 14‑bit current/voltage monitoring, programmable current limits, and versatile fast shutdown of preselected ports. PD detection uses a proprietary multipoint detection mechanism, ensuring excellent immunity from false PD identification. 1-event and 2-event physical classification are supported. The LTC9101-2A/LTC9102 includes an I2C serial interface operable up to 1MHz. The LTC9101-2A/LTC9102 is pin or I2C programmable to negotiate PD-delivered power up to 25.5W.APPLICATIONSPoE PSE Switches/Routers and Midspans