Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3531/-3.3/-3.0
Edited by the Electronicstalk Editorial
Team on 03 March 2006
Synchronous convertor fixes its output
A synchronous buck-boost convertor delivers up to 200mA of output current to a fixed regulated output with inputs above, below or equal to the output voltage.
Linear Technology has released the LTC3531/-3.3/-3.0, a synchronous buck-boost convertor that delivers up to 200mA of output current to a fixed regulated output with inputs above, below or equal to the output voltage The topology incorporated in the LTC3531/-3.3/-3.0 provides continuous transitions through all of the operating modes, making it ideal for single cell Li-ion or dual cell alkaline/NiCd/NiMH applications that must maintain a constant output voltage even as the battery voltage declines below the output
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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Card power chip meets smart and SIM standards
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 many cases this can add up to 25% more battery run-time.
The combination of only three tiny external components and a 3 x 3mm DFN or ThinSOT package provide a small and low profile solution footprint, typically required in battery powered handheld applications.
The LTC3531/-3.3/-3.0 implements a four switch, single inductor architecture to deliver efficiencies over 90%.
Burst mode operation delivers quiescent current of only 16uA and shutdown current is less than 1uA, further extending battery run-time.
Other features include current limiting, thermal shutdown and output disconnect.
LTC3531 is available from stock in an 8-Lead DFN package.
The LTC3531-3.0 or LTC3531-3.3 is available in either an 8-Lead DFN or 6-Lead ThinSOT package.
Pricing for all versions is $1.95 each for 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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