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News
42V Multi topology DC/DC Controller with 15μA IQ Provides Five Converter Topologies at Up to 10A Output Current
2017-09-11 | ReturnThe LT8711 operates over a 4.5V to 42V input voltage range and produces an output voltage that is dependent on the choice of external components. The 15μA no-load quiescent current with the output voltage in regulation extends operating run time in battery powered systems. Low ripple Burst Mode®operation enables high efficiency at very light loads while maintaining low output voltage ripple. When configured as a synchronous buck, the LT8711 can operate at 100% duty cycle, a useful feature when powered from a battery that is discharging.
The LT8711 features innovative EN/FBIN pin circuitry for input voltage regulation to avoid collapsing a high impedance input source such as a solar panel. This pin is also used for adjustable undervoltage lockout. The fixed operating frequency is selectable from 100kHz to 750kHz and can be synchronized to an external clock. Additional features includedual chip power supply inputs, a topology selection pinand adjustable soft-start.
The LT8711 is available in 20-lead TSSOP and 3mm x 4mm QFN packages. Extended and industrial versions operate overa junction temperature range of –40°C to 125°C. Pricing starts at $2.30each in 1000-piece quantities.For more information, visit www.linear.com/product/LT8711.
Summary of Features:LT8711
。Synchronous Buck, Boost, SEPIC and ZETA Topologies
。Nonsynchronous Buck-Boost Topology
。Wide 4.5V to 42V Input Voltage Range
。Low Noise Burst Mode Operation
。Low IQin Burst Mode Operation (15μA Operating)
。100% Duty Cycle in Dropout (Buck Mode)
。Input Voltage Regulation Capability
。2A Gate Drivers
。Adjustable Soft-Start
。Frequency Programmable from 100kHz to 750kHz
。Synchronizable to an External Clock
。20-Lead TSSOP and 3mm×4mmQFN-20 Packages
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Analog Devices just got more Powerful. On March 10, Analog Devices acquired Linear Technology, creating the premier high-performance analog company. More info at http://lt.linear.com/07c
Source:http://www.linear.com/