The LTC4091 is a 36V Li-Ion battery charger and power backup manager. The integrated step-down switching regulator charges a battery from a primary power source while providing power to the load. If primary power is lost, the load is seamlessly transitioned to the backup Li-ion/polymer battery. To protect sensitive downstream loads, the maximum output voltage is 4.45V.The LTC4091 provides an adaptive output that tracks the battery voltage for high efficiency charging. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge. Also featured is a termination timer and an NTC thermistor input used to monitor battery temperature while charging.During backup, an internal 75m? ideal diode connects the battery to the load. An optional external ideal diode FET driver is available to reduce the voltage drop even further. 4.1V or 4.2V battery charge voltages can be selected.Applications Fleet and Asset Tracking Automotive GPS Data Loggers Automotive Telematics Systems Battery Backup Systems

The LTM4622A is a complete dual 2A step-down switching mode ?Module? (micromodule) regulator in a tiny ultrathin 6.25mm ? 6.25mm ? 1.82mm LGA and 2.42mm BGA packages. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 3.6V to 20V, the LTM4622A supports an output voltage range of 1.5V to 12V, set by a single external resistor. Its high efficiency design delivers dual 2A continuous, 3A peak, output current. Only a few ceramic input and output capacitors are needed.The LTM4622A supports selectable Burst Mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.Fault protection features include input overvoltage, output overcurrent and overtemperature protection.The LTM4622A is available with SnPb (BGA) or RoHS compliant terminal finish. Vin Range Vout Range Iout LTM4622 3.6V to 20V 0.6V to 5.5V Dual 2.5A or Single 5A LTM4622A 3.6V to 20V 1.5V to 12V Dual 2A or Single 4A APPLICATIONS General Purpose Point-of-Load Conversion Telecom, Networking and Industrial Equipment Medical Diagnostic Equipment Test and Debug Systems

Demonstration circuit DC2575A is a 60V 2MHz synchronous buck-boost LED driver featuring the LT8391A. It accepts an input voltage from 4V to 60V and drives a single string of LEDs up to 16V at 1.5A. DC2575A runs at 2MHz switching frequency and features spread spectrum frequency modulation (SSFM) which can be enabled with a simple jumper. SSFM spreads the switching frequency from fSW to fSW + 25% for reduced EMI. SSFM is not necessary in applications where EMI is not important.

The LTC6952 is a high performance, ultralow jitter,JESD204B/C clock generation and distribution IC. Itincludes a Phase Locked Loop (PLL) core, consisting ofa reference divider, phase-frequency detector (PFD) witha phase-lock indicator, ultralow noise charge pump andinteger feedback divider. The LTC6952?s eleven outputscan be configured as up to five JESD204B/C subclass1 device clock/SYSREF pairs plus one general purposeoutput, or simply eleven general purpose clock outputs fornon-JESD204B/C applications. Each output has its ownindividually programmable frequency divider and outputdriver. All outputs can also be synchronized and set toprecise phase alignment using individual coarse half-cycledigital delays and fine analog time delays.For applications requiring more than eleven total outputs,multiple LTC6952s can be connected together using theEZSync or ParallelSync synchronization protocols.Applications High Performance Data Converter Clocking Wireless Infrastructure Test and Measurement

Demonstration Circuit 2611A features the LTC6955-1, 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 LTC6955-1’s output supply pins to connect to an LTC Silent Switcher® and the LTC6955-1 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 LTC6955-1 propagation delay measurements. The calibration path can be also reconfigured as a DC path, which allows for a convenient method of locking the LTC6955-1 outputs to an external PLL/VCO.

The DC2619A is a demonstration system for the LTC2972 power system manager that interfaces to various regulators. The board contains all the circuitry needed to demonstrate a power system that utilizes four 2-channel LTC2972 devices that manage eight power supplies. The eight power supplies include linear and switching regulators or the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated 8-channel programmable power supply system. The LTC2972 is a 2-channel I2C/SMBus/PMBus power system manager that features accurate input current and energy measurement. The device monitors input current and input voltage, and calculates input power and energy. The DC2619A demonstrates the ability of the LTC2972 to sequence, trim, margin, supervise, monitor, and log faults for eight power supplies. The LTC2972 monitors each channel’s output voltage and output current and also monitors external temperature sensors and its own internal die temperature. The DC2619A board contains eight independent power supply rails. The +5V/–5V rails are based on the switched capacitor LTC3260 regulator, the 1.0V/1.2V rails are powered by an LTC3633 switching regulator, the 1.5V/1.8V rails are powered by LTC3405A switching regulators, and the 2.5/3.3V rails are powered by LT3086/LT3055 linear regulators. The board is pre-configured with these voltages and may be re-configured with feedback resistors. The LTpowerPlay® graphical user interface (GUI) supports this demonstration system and enables complete control of all the features of the LTC2972. Together, the LTpowerPlay software and DC2619A hardware system create a powerful development environment for designing and testing configuration settings of the LTC2972. LTpowerPlay stores these settings in the LTC2972’s internal EEPROM or in a project file. The software displays all of the configuration settings and real time measurements from the power system management IC. Telemetry allows easy access and decoding of the fault log created by the LTC2972. The board comes preprogrammed with the EEPROM values appropriate for the eight power supply rails on the DC2619A. Just plug and play! Order pre-programmed devices from Linear Express® using LTpowerPlay. The following items are required: +12VDC Power Supply USB-to-I2C/SMBus/PMBus Controller (DC1613) LTpowerPlay Software

Demonstration circuit 2638A-C 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 200A maximum load current. The demo board has four 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-C 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.

The LTC4041 is a complete supercapacitor backup system for 2.9V to 5.5V supply rails. It contains a high current step-down DC/DC converter to charge a single supercapacitor or two supercapacitors in series. When input power is unavailable, the step-down regulator operates in reverse as a step-up regulator to backup the systemoutput from the supercapacitor(s).The LTC4041?s adjustable input current limit function reduces charge current to protect the input supply from overload while an external disconnect switch isolates theinput supply during backup. When the input supply drops below the adjustable PFI threshold, the 2.5A boost regulator delivers power from the supercapacitor to the systemoutput.An optional input overvoltage protection (OVP) circuit protects the LTC4041 from high voltage damage at the VIN pin. An internal supercapacitor balancing circuit maintainsequal voltages across each supercapacitor and limits the maximum voltage of each supercapacitor to a pre-determined value. The LTC4041 is available in a low profile (0.75mm) 24-Lead 4mm ? 5mm QFN package.ApplicationsRide-Through ?Dying Gasp? SuppliesHigh Current Ride-Through 3V to 5V UPSPower Meters/Industrial AlarmsServers/Solid State Drives

The LTC4162-L is an advanced monolithic synchronous step-down switching battery charger and PowerPath? manager that seamlessly manages power distribution between input sources such as wall adapters, backplanes, solar panels, etc., and a rechargeable Lithium-Ion/Polymer battery.A high resolution measurement system provides extensive telemetry information for circuit voltages, currents, battery resistance and temperature which can all be read back over the I2C port. The I2C port can also be used to configure many charging parameters including charging voltages and currents, termination algorithms and numerous system status alerts.The LTC4162-L can charge Lithium-Ion cell stacks from 1 cell to 8 cells with as much as 3.2A of charge current.The power path topology decouples the output voltage from the battery allowing a portable product to start up instantly under very low battery voltage conditions.The LTC4162-L is available in a thermally enhanced 28-pin 4mm ? 5mm ? 0.75mm QFN surface mount package.

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