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Circuit protection devices Electrical and electronic components

Analog launches controlled precision bidirectional current DAC

By Analog Devices incorporates Linear Technology on 22nd January 2018

Product Details Supplier Info More products

Analog Devices announces the Power by Linear™ LTC7106, a PMBus I²C controlled precision bidirectional current DAC designed to adjust the output voltage of virtually any DC/DC regulator. Through its PMBus compatible interface, the LTC7106 receives a 7-bit serial code and converts it to a bidirectional (source, sink) output current. When the current is fed into the feedback network of a regulator, its output voltage can be programmed dynamically for load power/performance optimization or margining in response to serial VID commands. Available in a 2mm x 3mm DFN-10 package, the LTC7106 enables small and simple solution for a wide range of discrete and modular DC/DC voltage regulators.

– View the LTC7106 product page, download data sheet, order samples and evaluation boards: linear.com/product/LTC7106

Its internal power-on reset circuitry keeps the DAC output current at zero until a valid write takes place. Other features include a range bit for easy interfacing to almost any impedance resistor divider, and an open-drain output for controlling the Run or Enable pin of the regulator. To prevent abrupt changes in the DAC output current and subsequently the output voltage of the regulator, an internal digital programmable slew rate can be programmed from 500ns/step to 3.5ms/step.

The LTC7106 operates over an input voltage range of 2.5V to 5.5V and is supported by the easy to use LTpowerPlay^® development tool with graphical user interface (GUI). Additional features include ±1% output current accuracy over temperature, a wide range bidirectional DAC output current from ±16µA to ±256µA, wide DAC operational voltage range from 0.4V to 2V, and a precision enable threshold to support external undervoltage lockout. Extended and industrial temperature versions are available from –40 to 125°C. For more information, visit www.linear.com/product/LTC7106.

Summary of Features: LTC7106

– V_OUT Control of Any Regulator

– ±1% Output Current Accuracy (–40°C to 125°C)

– PMBus/I²C Compliant Serial Interface

– Input Voltage Range: 2.5V to 5.5V

– 7-Bit Programmable DAC Output Current for V_OUT Control

– Wide Range of IDAC Output Current: ±16μA to ±256μA

– Programmable Slew Rate: 500ns ~ 3.5ms per Bit

– High Impedance at IDAC Output When Disabled or at DAC Code Zero

– Wide DAC Operation Output Voltage (0.4V to 2.0V)

– Precision Enable Threshold to Support External UVLO

– Available in 10-Lead 3mm × 2mm DFN Package

Analog Devices incorporates Linear Technology

Analog Devices (NASDAQ: ADI) is a leading global high-performance analogue technology company dedicated to solving the toughest engineering challenges.

Visit our website 01932 358530

Analog Devices is the leading global high-performance analog technology company dedicated to solving the toughest engineering challenges. We enable our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure, power, connect and interpret. We create innovative solutions to solve design challenges in instrumentation, automation, communications, healthcare, automotive and numerous other industries. The company is a global leader in the design and manufacturing of analog, mixed signal, and DSP integrated circuits to help solve the toughest engineering challenges. Visit http://www.analog.com.

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