Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LT3471
Edited by the Electronicstalk Editorial Team on 31 January 2005
Flexible configuration for dual-channel
convertor
The LT3471 is a dual channel (boost/inverter) 1.3A, 1.2MHz DC/DC convertor housed in a 3 x 3mm DFN package.
Linear Technology has released the LT3471, a dual channel (boost/inverter) 1.3A, 1.2MHz DC/DC convertor housed in a 3 x 3mm DFN package It can be configured as a dual boost, a boost/inverter, or a dual inverter, as the output voltage error amplifiers can sense to ground, providing boost or inverting control capability
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LT3471 input voltage range of 2.4 to 16V makes it ideal for Li-ion, multiple cell alkaline/NiMH batteries, as well as 12V power.
The device's low-saturation-voltage bipolar switches enable it to deliver 42V high current outputs from a tiny 9mm2 package.
The LT3471 switches at 1.2MHz, allowing the use of tiny, low cost, low profile inductors and capacitors.
High inrush current at startup is eliminated using a programmable soft-start function, where an external RC sets the current ramp rate.
A constant frequency current mode PWM architecture results in low, predictable output noise that is easy to filter.
The LT3471 switches are rated at 42V, making the device ideal for boost convertors up to 40V as well as SEPIC and flyback designs.
Each channel can generate 5V at up to 630mA from a 3.3V supply, or 5V at 360mA from four alkaline cells in a SEPIC design.
The LT3471 is available in a low profile (0.75mm) 10-lead 3 x 3mm DFN package, providing the smallest solution for high current dual boost/inverter applications.
The LT3471EDD is available from stock and pricing starts at $2.80 each for 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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