Articles by Linear Technology Corp.

Linear's quad PHY interface enables rugged multiport IO-Link masters

Linear Technology Corp. introduces the LTC2874, an IO-Link master IC, combining a power and communications interface to four remote IO-Link devices (slaves). A rugged interface and rich feature set make the LTC2874 ideal for larger systems implementing IO-Link (IEC61131-9) in harsh, industrial environments. Managing four slaves per master IC, the LTC2874 reduces board space, design complexity and costs while increasing reliability.


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Accelerate firmware development time for Linear Technology ICs

Linear Technology Corp. announces the Linduino™ One development tool, an Arduino-compatible platform for developing and distributing firmware libraries and code for Linear Technology’s SPI and I²C-compatible integrated circuits. The Linduino One board interfaces to more than 300 QuikEval™ demonstration cards, supporting a variety of product types including analog-to-digital converters (ADCs), digital-to-analog converters (DACs), power monitors, intelligent Hot Swap™ controllers, temperature sensors, LED drivers, and battery management systems.


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Linear introduces small boost DC/DC converter with avalanche photodiode current monitor

The LT3905 from Linear Technology is a fixed frequency, current-mode step-up DC/DC converter designed to bias avalanche photodiodes (APD) in optical receivers. The LT3905 features high side APD current monitoring with over five decades of dynamic range and better than 2% relative accuracy over the 3µA to 3mA range. The maximum APD current is programmed with a single resistor and a fast current limiter with indicator protects the APD during overload conditions.


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Linear introduces 55 V IN/55 V OUT buck-boost battery charging controller

Linear Technology Corp. introduces the LTC4020, an advanced high voltage power manager and multi-chemistry battery charger designed to efficiently transfer power from a variety of sources to a system power supply rail and a battery. The device offers precision charge current regulation, ±0.5% charge voltage regulation and operates across a wide 4.5 V to 55 V input voltage range compatible with a variety of different input voltage sources. 


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Step-Down DC/DC Controller: LTC3774

3774Linear Technology Corp.'s LTC3774 is a current-mode dual output synchronous step-down DC/DC controller that enables the use of very low DC resistance (DCR) power inductors by enhancing the current-sense signal. Power inductor DCRs down to 0.2 milliohms can be utilized to maximize converter efficiency (up to 95%), increase power density and reduce the output ripple voltage in high current applications.


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Linear introduces ideal diode bridge controller that minimizes power loss and heat

Linear Technology Corp. introduces the LT4321, an ideal diode bridge controller that replaces two diode bridge rectifiers with low-loss N-channel MOSFET bridges to increase the available power and reduce heat dissipation in a Power over Ethernet Powered Device (PoE PD). IEEE 802.3 PoE specifications require PDs to accept DC supply voltages of any polarity over their Ethernet inputs.


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Linear introduces 42 V, 4 A (IOUT), synchronous step-down silent switcher

Linear Technology Corp. announces the LT8614, a 4 A, 42 V input capable synchronous step-down switching regulator. A unique Silent Switcher™ architecture reduces EMI/EMC emissions by more than 20 dB, well below the CISPR 25 Class 5 limit. Even with switching frequencies in excess of 2 MHz, synchronous rectification delivers efficiency as high as 96% while Burst Mode® operation keeps quiescent current under 2.5 µA in no-load standby conditions.


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Wireless Power Receiver: LTC4120

4120Linear Technology Corporation introduces the LTC4120, a first for the company in the wireless battery charging space. The LTC4120 combines a wireless power receiver with a constant-current/constant-voltage battery charger, functioning as the receive circuit component in a complete wireless power transfer system comprised of transmit circuitry, transmit coil, receive coil and receive circuitry.


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