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Linear Technology

40A µModule Regulator with 3D Stacked-Inductor Packaging Enhances Thermal Conduction for Cooler Operation

Linear Technology Corporation introduces the LTM4636, a 40A step-down µModule® switching regulator with 3D construction for quicker heat dissipation and cooler operation in a small package. By stacking its inductor on top of a 16mm x 16mm BGA package, the LTM4636 benefits from the exposed inductor as a heat sink, permitting direct contact with airflow from any direction to cool the device. The LTM4636 delivers 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over ambient temperature. Full-power 40W is delivered up to 83°C ambient and half-power 20W is supported at 110°C ambient.

60V Synchronous Buck Battery Charger Includes Lead-Acid & Li-Ion Charge Algorithms for up to 20A Charge Current

Linear Technology Corporation introduces the LTC4013, a highly integrated, high voltage multi-chemistry synchronous step-down battery charger controller. With a wide input voltage range that spans up to 60V, the LTC4013 uses temperature-compensated 3- and 4-stage charge algorithms to efficiently charge 12V and 24V lead-acid batteries. Alternatively, the LTC4013 will charge a multicell Lithium-based battery stack with float voltages near to the input supply. Mode pins define the float voltage and charge algorithm. Charge current is precision regulated to ±5% and programmable with a single resistor up to 20A (depending on the selection of external components). The LTC4013 features user-adjustable maximum power point tracking (MPPT) circuitry that enables simple power optimization in the case of power-limited sources such as solar panels. The MPPT open-circuit method corrects for panel temperature changes without the inconvenience of adding a solar panel temperature sensor. Applications include portable medical instruments, monitoring equipment, battery backup systems, industrial handhelds, industrial lighting, military equipment, ruggedized notebooks/tablet computers, plus remote powered communication and telemetry systems.

Analog Devices and Linear Technology to Combine Creating the Premier Analog Technology Company

Analog Devices, Inc. (NASDAQ: ADI) (“Analog Devices”) and Linear Technology Corporation (NASDAQ: LLTC) (“Linear Technology”) today announced that they have entered into a definitive agreement under which Analog Devices will acquire Linear Technology in a cash and stock transaction that values the combined enterprise at approximately $30 billion(1). Upon completion of the acquisition, Analog Devices will be the premier global analog technology company with approximately $5 billion in anticipated annual revenue.

2A, 2MHz, 28V Boost/SEPIC/Inverting DC/DC Converter with IQ = 6µA

Linear Technology Corporation announces the LT8335, a current mode, 2MHz step-up DC/DC converter with an internal 2A, 28V switch. It operates from an input voltage range of 3V to 25V, suitable for applications with input sources ranging from a single-cell Li-Ion to automotive inputs. The LT8335 can be configured as either a boost, SEPIC or an inverting converter. It utilizes a fixed 2MHz switching frequency, enabling designers to minimize external component sizes and avoid critical frequency bands, such as AM radio. Burst Mode® operation reduces quiescent current to only 6µA while keeping output ripple below 15mVP-P. The combination of a 3mm x 2mm DFN package and tiny externals ensures a very compact footprint while minimizing solution cost.

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