Linear Technology has announce the LTC3530, a synchronous buck-boost converter that delivers up to 600mA of output current to a regulated output voltage with inputs above, below or equal to the output. Its input range of 1.8V to 5.5V and output range of 1.8V to 5.25V is compatible with single cell Li-Ion or dual-cell alkaline/NiCad/NiMH applications. The topology incorporated in the LTC3530 provides a continuous transfer mode through all operatin...

Linear Technology announces the LT3510, a dual current mode PWM step-down DC/DC converter with two internal 2.5A power switches packaged in a 20-lead TSSOP-20E package. Each channel is capable of delivering up to 2A of continuous output current at efficiencies up to 88%. Independent input voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking and sequencing requirements.

Linear Technology has announced the LT3003, a LED ballaster that drives three separate strings of LEDs with 3% accurate current matching, delivering uniform LED brightness. The LT3003 is capable of driving up to 24 LEDs at 350mA each, three strings of 8 LEDs each, making it ideal for backlighting a wide variety of TFT-LCDs and heads-up display applications. The LT3003 operates in boost mode, Buck mode and Buck-Boost mode, enabling operation in ma...

Linear Technology has introduced the LTC4416 and LTC4416-1, robust dual ideal diode PowerPath controllers for driving small and large gate capacitance P-channel MOSFETs in power switchover circuits. The device's control circuitry allows two power supplies to operate in tandem, ensuring highly efficient ORing of these power sources. The 25mV forward voltage of the LTC4416's and LTC4416-1's controlled PFET is significantly lower than a Schottky dio...

Linear Technology has announced the LT3501, a dual current mode PWM step-down DC/DC converter with two internal 3.5A power switches packaged in a 20-lead TSSOP-20E package. Each channel is capable of delivering up to 3A of continuous output current at efficiencies up to 88%. Independent input voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking and sequencing requirements. Its wide input range ...

Linear Technology has introduced the LT3740, a high output power step-down synchronous controller that operates from very low input voltages without needing an auxiliary 5V gate drive supply. In addition to a DC/DC step-down controller, the LT3740 integrates a DC/DC step-up converter for generating its own MOSFET gate drive voltage. This function permits the use of inexpensive off-the-shelf 5V gate-drive N-channel MOSFETs, offering up to 3% highe...

Linear Technology has introduced the LTC2499, a 16-channel delta-sigma analog-to-digital converter (ADC) that communicates via an I2C-compatible serial interface and includes a unique analog input architecture. The LTC2499's Easy Drive™ front-end design results in zero average differential input current, allowing measurements of high impedance input sources without the use of an internal buffer. This patented sampling scheme simplifies the desi...

Linear Technology has introduced the LTC2912, a single undervoltage and overvoltage monitor for space-conscious applications. Housed in a tiny 3mm x 2mm DFN package, the voltage monitoring inputs of the LTC2912 include filtering to reject brief glitches, thus ensuring reliable reset operation without false or noisy triggering. Programmed by external resistors, the UV and OV trip thresholds have a guaranteed ±1.5% threshold accuracy of monitored ...

Linear Technology has announced the LT3494/A low noise boost converters with integrated power switches, Schottky diodes and output disconnect circuitry. The LT3494 uses a 180mA switch, the LT3494A uses a 350mA switch, and both parts are packaged in a 3mm x 2mm DFN-8 package. Their wide 2.3V to 16V input voltage range enables operation from single cell Li-Ion batteries up to fixed 12V input rails, delivering outputs up to 40V. The LT3494 can deliv...

Linear Technology has introduced the LTC2492, a 4-channel delta-sigma analog-to-digital converter (ADC) that integrates a temperature sensor and a novel front-end design in a tiny 4mm x 3mm DFN package. The LTC2492's Easy Drive™ design results in zero average differential input current, allowing measurements of high impedance input sources without the need for an internal buffer. This patented sampling scheme simplifies the design of front-end ...

Linear Technology has announced the LTC3542, a high efficiency, 2.25 MHz, synchronous buck regulator that delivers up to 500mA of continuous output current from either a 2mm x 2mm DFN or ThinSOT™ package. Using a constant frequency, current mode architecture, the LTC3542 operates from an input voltage range of 2.5V to 5.5V, making it ideal for single cell Li-Ion/Polymer, or multicell Alkaline/NiCad/NiMH applications. It can generate output volt...

Linear Technology has announced the LT3503, a current mode PWM step-down DC/DC converter with an internal 1.45A power switch, packaged in a tiny 6-lead 2mm x 3mm DFN package. Its wide input range of 3.6V to 20V makes the LT3503 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, fixed 5V and 12V rails and lead acid batteries. Its 2.2MHz switching frequency enables the use of tiny, low cost inductors...

Linear Technology has introduced the LTC2704-16, a 16-bit, quad voltage-output DAC with six software-programmable output voltage ranges. Each of the four DACs can be programmed via a 3-wire SPI-compatible serial interface for one of four bipolar output ranges (±10V, ±5V, ±2.5V, or -2.5 to 7.5V) or one of two unipolar output ranges (0V to 5V, or 0V to 10V). The LTC2704-16 offers excellent DC performance of ±2LSB(max) INL and ±1LSB(max) DNL. T...

Linear Technology has introduced the LTC4263, an autonomous single-channel Power Sourcing Equipment (PSE) controller with an onboard MOSFET for use in IEEE 802.3af Power Over Ethernet (PoE) compliant systems. Requiring only a few external components, the IC is a complete single-port PSE solution that detects, classifies and provides isolated 48V power to Powered Devices (PDs) connected to it. Offering standard-compliant AC or DC methods to sense ...

A new family of high voltage, high power DC/DC uModule point-of-load (POL) regulators from Linear Technology provides new features and various output power capabilities. The LTM4601, LTM4602 and LTM4603 each contain all the components required to build a 6A to 48A point-of-load (POL) regulator, including the inductor, power MOSFETs, DC/DC controller, compensation circuitry and input/output bypass capacitors. The devices’ compact 15mm x 15mm x ...

Linear Technology has introduced the LT6559, a single-supply triple amplifier with an industry-leading combination of small size, high speed performance and low cost, making it ideal for applications such as 1080p High Definition video. Available in a tiny 3mm x 3mm QFN package, the LT6559 offers excellent AC performance with 150MHz 0.1dB flatness bandwidth, 800 V/us slew rate and a wide output swing of 1.15V to 3.85V on a single 5V supply.

Linear Technology has announced the LT3012 and LT3013, micropower LDOs with input voltage capability up to 80V. The LT3012 and LT3013 feature low dropout voltage of only 400mV while delivering up to 250mA of load current. The wide adjustable VOUT capability from 1.24V to 60V makes them ideal for automotive, 48V telecom backup supplies and industrial control applications. Additionally, their very low quiescent current as low as 40uA (operating) an...

Linear Technology has introduced the LT6402 and LT6411, two new differential amplifiers suitable as high-speed ADC drivers, twisted-pair line drivers and single-ended to differential signal converters. These new products utilize a novel design topology to integrate precision gain-setting resistors on-chip. In addition to simplifying system design and reducing external component count, these devices optimize distortion power and noise performance,...

Linear Technology has announced the LTC3221/-3.3/-5 regulated step up charge pumps offered in the compact 2mm x 2mm DFN package. Featuring 60mA output current and Burst Mode operation, the LTC3221 family consumes an ultra-low quiescent current of 8uA, saving battery run time in portable device applications. The LTC3221 has an adjustable output voltage and a wide input voltage range of 1.8V to 5.5V with a maximum output level not greater than twic...

Linear Technology has introduced the LTC3836, a dual output 2-phase, low input voltage current mode synchronous step-down switching controller. Operation from an input voltage from 2.75V to 4.5V makes the device ideal for 3.3V, single cell Li-Ion, multi-cell Alkaline or NiMH input sources. It can generate two independent output voltages as low as 0.6V, powering the latest generation of low voltage DSPs and microcontrollers.