Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3456
Edited by the Electronicstalk Editorial Team on 21 March 2005
Power chip is complete system management
solution
The LTC3456 is a complete power management system IC optimised for portable applications powered by dual cell alkaline/NiCd/NiMH batteries, USB or wall adapter.
Linear Technology has released the LTC3456, a complete power management system IC optimised for portable applications powered by dual cell alkaline/NiCd/NiMH batteries, USB or wall adapter The LTC3456 delivers up to 150mA to a fixed 3.3V main output and up to 200mA to an adjustable (battery voltage to 0.8V) core output to power microprocessors, microcontrollers and their peripheral circuitry
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTC4557 is a dual SIM/smart-card power supply and level translator, which provides both 1.8 and 3V SIM power and digital signal level shifting from a 3 x 3mm QFN package.
In addition, the LTC3456 provides a 3.3V 50mA hot swap output for Flash memory cards and an always-alive output to power a real-time clock.
The LTC3456 is available in a tiny low profile (4 x 4 x 0.75mm) 24-pin QFN package making it ideal for space-sensitive packaged portable devices.
The LTC3456 has onboard voltage detectors to monitor the status of the wall adapter and USB voltages, as well as a unique control scheme, ensuring seamless transition between battery, USB and wall adapter input power sources.
Integrated power sequencing ensures that the main and hot swap outputs always come up after the core output.
The main and core 1MHz switching regulators employ synchronous rectification to deliver efficiencies over 90%.
The LTC3456 has a low battery indicator and a feature to ensure that all outputs are discharged to ground in shut down mode.
The LTC3456 is available from stock.
Pricing starts at $3.95 each for 1000 quantities. Request a free brochure from Linear Technology Corp ...
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