ARTICLES

Linear introduces 18 Bit, 1 Msps, ±10.24 V true bipolar SAR ADC

Linear Technology Corp. introduces the LTC2338-18, an 18-bit 1 Msps no latency analog-to-digital converter (ADC) with a wide ±10.24 V fully differential, true bipolar input range for high voltage, industrial applications. The device operates from a single 5V supply, achieves 100 dB SNR and -110 dB THD and features an internal 2.048 V (20 ppm/°C max) reference and reference buffer. An input divider network scales and level shifts the input signal, eliminating complicated circuitry required to directly interface true bipolar signals. 


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Linear's 600 mA negative LDO+ offers rail-to-rail operation, programmable current limit & output current monitor

Linear Technology Corp. announces the LT3090, the newest member of its LDO+™ family, a 600 mA low dropout negative linear regulator featuring low noise, rail-to-rail operation, precision programmable current limit and a bidirectional output current monitor. The device is cable-drop compensation capable, easily parallelable for higher current or PCB heat spreading and configurable as a floating 3-terminal regulator.


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Switched Capacitor Converter: LTC3255

3255Linear Technology Corp. announces the LTC3255, a versatile high voltage step-down switched capacitor converter that delivers up to 50 mA of output current. In applications where the input voltage exceeds twice the output voltage, a charge pump offers nearly twice the efficiency of an equivalent linear regulator, and provides a space-saving inductor-free alternative to switching DC/DC regulators.


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Linear introduces USB 5 V, 2.5 A, 42 V input synchronous buck with cable drop compensation

Linear Technology Corp. announces the LT8697, a 2.5 A, 42 V input capable synchronous step-down switching regulator designed to power 5 V USB applications. The LT8697 delivers precise 5 V regulation at a remote USB port using programmable cable drop compensation to accurately correct the voltage drop from a long connecting cable regardless of variations in load current. The LT8697’s forced continuous operation enables the LT8697 to sink current, maintaining full frequency operation at zero load, further enhancing accurate 5V regulation during load transients.


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DC/DC Regulator: LTM4676

4676Linear Technology Corp. announces the LTM4676, a dual 13A or single 26A µModule® (micromodule) step-down DC/DC regulator with a serial digital interface. The interface enables system designers and remote operators to command and supervise a system’s power condition and consumption. The LTM4676 simplifies system characterization, optimization and data mining during prototyping, deployment and field operation.


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Linear introduces controller with spread spectrum frequency modulation & short-circuit protection

Linear Technology announces the LT3795, a 110V, high-side current sense DC/DC converter designed to regulate a current or voltage to a constant value, ideal for driving high brightness (HB) LEDs. Its 4.5V to 110V input voltage range makes it appropriate for a wide variety of applications, including automotive, industrial and architectural lighting. The LT3795 uses an external low side N-channel MOSFET and can drive up to 90V of white LEDs from a nominal 12V input, delivering in excess of 50 watts.


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DC/DC µModule®: LTM4630

4630Linear Technology Corp., introduces the LTM4630, a dual 18 A per output or single 36 A output DC/DC µModule® step-down regulator capable of delivering up to 144 A when four devices are current shared. The LTM4630 is a complete DC/DC regulator system in a 16 mm x 16 mm x 4.41 mm LGA package, which includes inductors, MOSFETs, DC/DC controller and compensation circuitry.


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H-Grade Version for DC/DC Converter: LTC3122HMSE

3122HLinear Technology announces the high temperature H-grade version of the LTC3122 in a 12-lead thermally enhanced MSOP package. The LTC3122 is a 3 MHz current-mode, synchronous boost DC/DC converter with integrated output disconnect. Its internal 2.5 A switches deliver output voltages as high as 15 V from an input voltage range of 1.8 V at start-up (0.5 V when running) to 5.5 V.


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High Power Density LDO: LT1965

1965HLinear Technology Corp. announces a new H grade, wider temperature range version of the LT1965 a 1A LDO with high power density. The IC features low dropout voltage of only 300 mV at full load, wide VIN capability of 1.8 to 20 V and an adjustable output from 1.2 to 19.5 V.


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Linear introduces 15 V, 2.25 MHz synchronous dual 600 mA step-down regulator

Linear Technology Corp.'s LTC3607 is a high efficiency, 2.25 MHz synchronous dual output buck regulator that incorporates a peak current mode architecture. It can deliver up to 600 mA of continuous output current from each channel at output voltages as low as 0.6V from a 3 mm x 3 mm QFN or a thermally enhanced MSOP-16 package. The LTC3607 accommodates an input voltage range of 4.5 V to 15 V, making it suitable for dual cell Li-Ion applications as well as 5 V and 12 V intermediate bus systems.


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