Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3428
Edited by the Electronicstalk Editorial Team on 10 November 2004
Boost convertor delivers 2A in 3 x 3mm
DPN
The LTC3428 is a two-phase, current-mode boost convertor capable of supplying 2A at 5V from a 3.3V input in a 3 x 3mm DFN package.
Linear Technology has produced the LTC3428, a two-phase, current-mode boost convertor capable of supplying 2A at 5V from a 3.3V input in a 3 x 3mm DFN package Its input voltage range of 1.6 to 4.5V is ideal for Li-ion and multicell alkaline/NiMH applications
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
Related stories
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.
External parts count and size are minimised by a 1MHz per phase switching frequency and a two-phase design.
Two-phase operation significantly reduces peak inductor currents and capacitor ripple current, doubling the effective switching frequency and minimising both inductor and capacitor size.
External compensation allows the feedback loop response to be optimized for a particular application.
Two 93uohm, 2A N-channel MOSFET switches allow the LTC3428 to deliver high efficiency from input voltages as low as 1.6V.
The device also features an active low shutdown pin to reduce supply current to below 1uA, internal soft-start, antiringing control and thermal shutdown.
The LTC3428 is available in a low profile (0.75mm) 10-lead (3 x 3mm) DFN package.
The LTC3428EDD is available from stock in a (3 x 3mm) DFN package.
Pricing starts at $3.50 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
