Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3458L
Edited by the Electronicstalk Editorial
Team on 11 August 2005
Step-up convertor has wide input range
The LTC3458L is a 1.7A, 6V, 1.5MHz synchronous step-up DC/DC convertor with inrush current limiting and output disconnect.
The LTC3458L is a 1.7A, 6V, 1.5MHz synchronous step-up DC/DC convertor with inrush current limiting and output disconnect Its wide 1.5 to 6V input voltage range enables the LTC3458L to operate from dual cell alkaline/NiMH/NiCd to single cell Li-ion batteries
This article was originally published on Electronicstalk on 3 Oct 2008 at 8.00am (UK)
Related stories
Linear launches triple output converter
Linear Technology has revealed the LTC3100, a triple output converter that includes a 700mA (ISW) synchronous boost regulator, a 250mA (IOUT) synchronous buck regulator and a 100mA (IOUT) LDO.
Linear releases dual DC/DC regulator system
Linear Technology has introduced the LTM4616, a dual DC/DC umodule regulator system in a tiny surface mount package.
It can deliver outputs up to 6V with efficiencies up to 95%.
Its switching frequency is programmable up to1.5MHz, allowing designers to keep switching noise out of noise-sensitive circuitry and enabling the use of tiny capacitors and inductors.
The combination of the LTC3458L's internal switches and a tiny 4 x 3mm DFN package provide high efficiency boost capability in a very compact form factor.
The LTC3458L's 200mohm (N-channel) MOSFET switch and 300mohm (P-channel) MOSFET synchronous rectifier provide high efficiency operation.
For light load efficiency, the part utilises programmable Burst Mode operation to reduce quiescent current to less than 15uA.
The current threshold at which burst mode operation begins is user programmable, enabling designers to optimise battery run-time.
Switching frequency is also programmable from 400kHz to 1.5MHz via a single resistor.
Alternatively the part will synchronise to an external clock.
Other features include current mode operation, programmable soft-start and a programmable current limit.
The LTC3458LEDE is available from stock in a 4 x 3mm DFN package.
Pricing starts at $3.20 each for 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
• Linear Technology Corp: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
