Linear Technology Corporation has announced a high reliability grade version of the LTC3780, a very high efficiency synchronous buck-boost switching regulator DC/DC controller that operates from input voltages above, below or equal to the output voltage. High power buck-boost circuits typically rely on transformers or two DC/DC converters, one for step-up (boost) and the other for step-down (buck) conversion.

Linear Technology has announced the LT3085, the latest member of a family of next-generation NPN LDOs that can be easily paralleled for heat spreading and are adjustable down to 0 volts with a single resistor. This new architecture regulator uses a current reference rather than a conventional voltage reference to allow sharing between multiple regulators by directly paralleling the pins. Current sharing is set with a small length of PC trace as b...

Linear Technology has announced the LT3756, a 100V, high-side current sense DC/DC converter designed to drive high current LEDs. Its 6V to 100V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting. The LT3756 uses an external N-channel MOSFET and can drive up to 20 1A white LEDs from a nominal 12V input, delivering in excess of 70 watts. It incorporates a high-side curr...

Linear Technology has announced the LT3972, a 3.5A, 33VIN step-down switching regulator with Burst Mode operation to keep quiescent current under 75uA. The LT3972 operates within a VIN range of 3.6V to 33V, with overvoltage lockout protection against transients as high as 62V, making it ideal for load dump and cold-crank conditions commonly found in automotive applications.

Linear Technology has announced the LTC3576, the newest member in a family of multifunction power management ICs for Li-Ion/Polymer battery-based applications including HDD-based media players, digital cameras, personal navigation devices, PDAs, smart phones and automotive-compatible portable electronics.

Linear Technology has announced the LTC3853, a highly efficient, triple output synchronous step-down switching regulator controller with coincident or ratiometric tracking that safely powers pre-biased loads. The 4.5V to 24V (28V Max.) input range encompasses a wide variety of applications including most intermediate bus voltages.

Linear Technology has introduced the LT5581, a broadband 6GHz RMS detector, featuring 40dB dynamic range and a low operating supply current of 1.4mA. The device is well suited for a wide range of power monitor and control applications in portable and battery- powered wireless systems, cellular basestations, picocells and femtocells, fiber optic transmitters and instrumentation. The LT5581 outputs a DC voltage that is linearly proportional to the ...

Linear Technology has announced the LT3587, a triple channel (dual boost plus inverter), ±32V, 1MHz DC/DC converter with output disconnect. Its internal 800mA boost and 900mA inverter can deliver up to 50mA at 15V and 100mA at -8V from a Li-Ion cell, providing bias for the latest generation of CCD (Charge-Coupled Device) imagers and LCD displays.

Linear Technology has introduced the LTC2301/LTC2305, a pair of 1-/2-channel 12-bit analog-to-digital converters that communicate via an I2C-compatible 2-wire interface and dissipate just 1.5mW at a 1ksps output rate. Offered in pin-compatible 4mm x 3mm DFN and MSOP packages, the LTC2301 measures a single differential input while the LTC2305 digitizes two single-ended inputs.

Linear Technology has announced the LTC6802, a highly integrated multicell battery monitoring IC capable of measuring up to 12 individual battery cells. The device’s proprietary design allows multiple LTC6802s to be stacked in series without optocouplers or isolators, for precision voltage monitoring of every cell in long strings of series-connected batteries.

Linear Technology has introduced the LTC4217, a 2A integrated Hot Swap™ controller for protecting low power boards with load supply voltages ranging from 2.9V to 26.5V. Like other Hot Swap devices, the LTC4217 allows a board to be safely inserted and removed from a live backplane by limiting the amount of inrush current to the load supply during power up. Hot Swap controllers typically call for a number of supporting components.

Linear Technology has introduced a family of four high performance dual fixed frequency lowpass active filters/amplifiers targeting a wide range of wireless communications and industrial signal processing equipment applications.

Linear Technology has announced the LTC3586, the latest and most highly integrated PMIC in a family of multi-function, compact power management solutions for Li-Ion/Polymer battery applications. The LTC3586 integrates a switching PowerPath manager, a stand-alone battery charger, always-on LDO, and 4 high efficiency synchronous switching regulators: 1 buck-boost, 1 boost, and 2 buck regulators, all in a compact, low-profile 4mm x 6mm QFN package.

Linear Technology has announced the LT3011, a high voltage micropower, low dropout regulator that delivers up to 50mA of continuous output current with a low dropout voltage of only 300mV at full load. The LT3011 features an input voltage range of 3V to 80V, delivering output voltages as low as 1.24V and up to 60V.

Linear Technology has announced the LT3653, a 1.2A, 1.5MHz monolithic current mode step-down switching regulator with a programmable output current limit. Typically, it is used with battery charger power path controllers to pre-regulate the output and optimize battery charger efficiency. Its wide operating input voltage of 7.5V to 30V makes the LT3653 ideal for a variety of input sources including unregulated 12V wall adapters, 24V industrial sup...

Linear Technology has announced the H-Grade version of the LT3481. The LT3481 is a 34V (36V(MAX)), BurstMode, step-down switching regulator that maintains quiescent current under 50uA.The H Grade version operates up to a junction temperature of 150°C, compared to the E and I Grade versions' 125°C maximum junction temperature.

Linear Technology has introduced the LTC4009, a fast-charge 4A capable, high efficiency switchmode battery charger controller for multiple battery chemistries which minimizes power dissipation without compromising board space. The LTC4009 supports Li-Ion/Polymer, NiMH, NiCd and sealed lead acid battery chemistries in multi-cell configurations.

Linear Technology has announced the LTC3851, a wide input range synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages and has coincident or ratiometric tracking. The 4V to 38V input range encompasses a wide variety of applications, including most intermediate bus voltages and battery chemistries.

The LTC3608 is a high efficiency, synchronous buck regulator that can deliver up to 8A of continuous output current at voltages as low as 0.6V. It operates from an input voltage range of 4V to 18V (20V ABS Max), making it ideal for applications with multicell Li-Ion, lead acid batteries or fixed voltage rails up to 15V.

Linear Technology has introduced the LTC4352, a 0V to 18V ideal diode controller that enables low loss ORing of multiple power sources with minimal disturbance to supply voltages. The LTC4352 regulates the forward voltage drop across an external N-channel MOSFET to ensure smooth current transfer between supplies in diode-OR applications. In low voltage systems a slow handoff between controllers results in a voltage droop during supply switchover.