The ADGS1408 /?ADGS1409 are analog multiplexers comprisingeight single channels and four differential channels, respectively.A serial peripheral interface (SPI) controls the switches. The SPIinterface has robust error detection features such as cyclicredundancy check (CRC) error detection, invalid read/writeaddress detection, and SCLK count error detection.It is possible to daisy-chain multiple ADGS1408 / ADGS1409devices together. Daisy-chain mode enables the configuration ofmultiple devices with a minimal amount of digital lines. TheADGS1408 / ADGS1409 can also operate in burst mode todecrease the time between SPI commands.iCMOS construction ensures ultra low power dissipation, makingthe devices ideally suited for portable and battery-poweredinstruments.Each switch conducts equally well in both directions when on,and each switch has an input signal range that extends to thesupplies. In the off condition, signal levels up to the suppliesare blocked.The on-resistance profile is flat over the full analog input range,which ensures linearity and low distortion when switchingaudio signals.PRODUCT HIGHLIGHTS SPI interface removes the need for parallel conversion, logic traces, and reduces GPIO channel count. Daisy-chain mode removes additional logic traces when multiple devices are used. CRC error detection, invalid read/write address detection, and SCLK count error detection ensure a robust digital interface. CRC and error detection capabilities allow the use of the ADGS1408/ADGS1409 in safety critical systems. Minimal distortion.APPLICATIONS Automated test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Audio signal routing Video signal routing Communications systems Relay replacement?

The ADGS1408?/ ADGS1409 are analog multiplexers comprisingeight single channels and four differential channels, respectively.A serial peripheral interface (SPI) controls the switches. The SPIinterface has robust error detection features such as cyclicredundancy check (CRC) error detection, invalid read/writeaddress detection, and SCLK count error detection.It is possible to daisy-chain multiple ADGS1408 / ADGS1409devices together. Daisy-chain mode enables the configuration ofmultiple devices with a minimal amount of digital lines. TheADGS1408/ADGS1409 can also operate in burst mode todecrease the time between SPI commands.iCMOS construction ensures ultra low power dissipation, makingthe devices ideally suited for portable and battery-poweredinstruments.Each switch conducts equally well in both directions when on,and each switch has an input signal range that extends to thesupplies. In the off condition, signal levels up to the suppliesare blocked.The on-resistance profile is flat over the full analog input range,which ensures linearity and low distortion when switchingaudio signals.PRODUCT HIGHLIGHTS SPI interface removes the need for parallel conversion, logic traces, and reduces GPIO channel count. Daisy-chain mode removes additional logic traces when multiple devices are used. CRC error detection, invalid read/write address detection, and SCLK count error detection ensure a robust digital interface. CRC and error detection capabilities allow the use of the ADGS1408 / ADGS1409 in safety critical systems. Minimal distortion.?APPLICATIONS Automated test equipment Data acquisition systems Battery-powered systems Sample-and-hold systems Audio signal routing Video signal routing Communications systems Relay replacement?

The ADGS5412 contains four independent single-pole/single-throw (SPST) switches. A serial peripheral interface (SPI) controls the switches. The SPI interface has robust error detection features, including cyclic redundancy check (CRC) error detection, invalidread/write address detection, and serial clock (SCLK) counterror detection.It is possible to daisy-chain multiple ADGS5412 devices together,which enables the configuration of multiple devices with aminimal amount of digital lines. The ADGS5412 can also operate in burst mode to decrease the time between SPIcommands. Each switch conducts equally well in both directions when on,and each switch has an input signal range that extends to thesupplies. In the off condition, signal levels up to the supplies are blocked. The on-resistance profile is very flat over the full analog input range, which ensures good linearity and low distortion when switching audio signals. The ADGS5412 exhibits break-before-make switching action, allowing use of the device in multiplexer applications with external wiring.PRODUCT HIGHLIGHTS SPI interface removes the need for parallel conversion and logic traces and reduces general-purpose input/output (GPIO) channel count. Daisy-chain mode removes additional logic traces when multiple devices are used. CRC, invalid read/write address, and SCLK count error detection ensure a robust digital interface. CRC error detection capabilities allow for the use of the ADGS5412 in safety critical systems. Guaranteed break-before-make switching allows the use of the ADGS5412 in multiplexer configurations with external wiring.Trench isolation analog switch section guards against latch-up. A dielectric trench separates the positive (P) and negative (N) channel transistors thereby preventing latch-up even under severe overvoltage conditions.APPLICATIONS Relay replacement Automatic test equipment Data acquisition Instrumentation Avionics Audio and video switching Communication systems

The ADGS5414 contains eight independent single-pole/single-throw (SPST) switches. An SPI interface controls the switchesand has robust error detection features, including cyclicredundancy check (CRC) error detection, invalid read/writeaddress error detection, and SCLK count error detection.It is possible to daisy-chain multiple ADGS5414 devices together. This enables the configuration of multiple devices with a minimalamount of digital lines. The ADGS5414 can also operate in burstmode to decrease the time between SPI commands.Each switch conducts equally well in both directions when on, andeach switch has an input signal range that extends to the supplies. In the off condition, signal levels up to the supplies are blocked.The on-resistance profile is flat over the full analog input range, ensuring ideal linearity and low distortion when switchingaudio signals. The ADGS5414 exhibits break-before-makeswitching action, allowing the use of the device in multiplexer applications with external wiring.Product Highlights The SPI interface removes the need for parallel conversion, logic traces, and reduces the general-purpose input/output (GPIO) channel count. Daisy-chain mode removes the need for additional logic traces when using multiple devices. CRC error detection, invalid read/write address error detenction, and SCLK count error detection ensures a robust digital interface. CRC and error detection capabilities allow the use of the ADGS5414 in safety critical systems. Break-before-make switching allows external wiring of the switches to deliver multiplexer configurations. The trench isolation analog switch section guards against latch-up. A dielectric trench separates the positive and negative channel transistors, preventing latch-up even under severe overvoltage conditions.Applications Relay replacement Automatic test equipment Data acquisition Instrumentation Avionics Audio and video switching Communication systems

The ADM1272 ?is a hot swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current, voltage, and power readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus? interface. This device is able to withstand up to 120 V, which makes it very robust in surviving surges and transients commonly associated with high voltage systems, usually clamped using protection devices such as transient voltage suppressors (TVSs) that can often exceed 100 V.The load current, ILOAD, is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the SENSE+ and SENSE? pins. A default current limit sense voltage of 30 mV is set, but this limit can be?adjusted down, if required, using a resistor divider network from the VCAP regulator output voltage to the ISET pin. An additional resistor can also be placed from ISET to VIN (or VOUT) to allow the current limit to track inversely with the rail voltage. This resistor allows an approximate system power limit to be used.The ADM1272 ?limits the current through the sense resistor by controlling the gate voltage of an external N channel field effect transistor (FET) in the power path. The sense voltage, and therefore the load current, is maintained below the preset maximum. The ADM1272 ?protects the external FET by monitoring and limiting the energy transfer through the FET while the current is being controlled. This energy limit is set by the choice of components connected to the EFAULT pin (for fault protection mode) and the ESTART pin during startup. Therefore, different energy limits can be set for start-up and normal fault conditions. During startup, inrush currents are maintained very low and different areas of the safe operating area (SOA) curve are of interest, whereas during fault conditions, the currents can be much higher.The controller uses the drain to source voltage (VDS) across the FET to set the current profile of the EFAULT and ESTART pins and, therefore, the amount of much energy allowed to be transferred in the FET. This energy limit ensures the MOSFET remains within the SOA limits. Optionally, use a capacitor on the DVDT pin to set the output voltage ramp rate, if required. In case of a short-circuit event, a fast internal overcurrent detector responds in hundreds of ns and signals the gate to shut down. A 1.5 A pull-down device ensures a fast FET response. The gate then recovers control within 50 ?s to ensure minimal disruption during conditions, such as line steps and surges. The?ADM1272 ?features overvoltage (OV) and undervoltage (UV) protection, programmed using external resistor dividers on the UVH, UVL, and OV pins. The use of two pins for undervoltage allows independent accurate rising and falling thresholds. The PWRGD output pin signals when the output voltage is valid and the gate is sufficiently enhanced. The validity of VOUT is determined using the PWGIN pin.The 12-bit ADC measures the voltage across the sense resistor, the supply voltage on the SENSE+ pin, the output voltage, and the temperature using an external NPN/PNP device. A PMBus interface allows a controller to read data from the ADC. As many as 16 unique I2C addresses can be selected, depending on how the two ADRx pins are connected. The?ADM1272 is available in a custom 48-lead LFCSP (7 mm ? 8 mm) with a pinstrap mode that allows the device to be configured for automatic retry or latchoff when an overcurrent (OC) fault occurs.Applications 48 V/54 V systems Servers Power monitoring and control/power budgeting Central office equipment Telecommunication and data communication equipment Industrial applications

Demonstration circuit 1021A is a high efficiency synchronous step-down DC/DC converter with 4.5V to 16V input range. It can provide 2.5V output with 10A maximum current. The demo board features the LTC3823EUH controller.

The LT3513 5-output adjustable switching regulator provides power for large TFT-LCD panels. The 38-pin 5mm ? 7mm QFN device can generate a 3.3V or 5V logic supply along with the triple output supply required for the TFT-LCD panel. A lower voltage secondary logic supply may also be generated with the addition of an external NPN driven by the internal linear regulator. A step-down regulator provides a low voltage output, VLOGIC, with up to 1.2A of current while capable of operating from a wide input range of 4.5V to 30V. A high power step-up converter, a lower power step-up converter and an inverting converter provide the three independent output voltages: AVDD, VON and VOFF required by the LCD panel. A high-side PNP provides delayed turn-on of the VON signal and can handle up to 30mA. Protection circuitry ensures that VON is disabled if any of the four outputs are more than 10% below the programmed voltage.Applications Automotive TFT-LCD Displays Large TFT-LCD Desktop Monitors Flat Panel Televisions

The LTC3812-5 is a synchronous step-down switching regulator controller that can directly step down voltages from up to 60V input, making it ideal for telecom and automotive applications. The LTC3812-5 uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit without requiring a sense resistor.A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1? gate drivers allow the LTC3812-5 to drive large power MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN. A shutdown pin allows the LTC3812-5 to be turned off reducing the supply current to <230?A.Integrated bias control generates gate drive power from the input supply during start-up and when an output short-circuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher efficiency. Features Adj UVLO, Sync & Tracking Package LTC3810 Vin 6.2V to 100V, 10V Driver Voltage Yes SSOP-28 LTC3810-5 Vin 4.35V to 60V, 5.5V Driver Voltage Yes QFN-32 LTC3812-5 Vin 4.35 to 60V, 5.5V Driver Voltage No TSSOP-16E Applications? 48V Telecom and Base Station Power Supplies Networking Equipment, Servers Automotive and Industrial Control Systems

Demonstration circuit 1038A-B is a 35W isolated flyback converter with synchronous rectification and primary-side regulation featuring the LT3837. This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attainable using the part in a flyback power supply. It operates at 200kHz and produces a regulated 5V, 7A output from an input voltage range of 9V to 36V. Isolation voltage is 1500VDC.

DC1040A-B: Demo Board for the LTC3544B Quad Synchronous Step-Down Regulator, 2.25MHz, 300mA, 200mA, 200mA and 100mA.