Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LTC3204
Edited by the Electronicstalk Editorial Team on 28 April 2005
Charge pump minimises switching noise
New from Linear Technology, the LTC3204 is a charge pump doubler in a 2 x 2mm DFN package.
New from Linear Technology, the LTC3204 is a charge pump doubler in a 2 x 2mm DFN package Featuring low-noise constant-frequency (1.2MHz) operation, the LTC3204-3.3 generates a regulated boosted output voltage of 3.3V from a minimum input voltage of 1.8V (two AA cell alkaline or NiMH) at output currents up to 50mA, while the LTC3204-5 produces 5V output from a minimum 2.7V (Li-ion battery) input at currents up to 150mA
This article was originally published on Electronicstalk on 23 Nov 2005 at 8.00am (UK)
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Charge pump doublers shrink supply size
Linear Technology has released the LTC3204B-3.3/5 charge pump doublers in 2 x 2mm DFN packages.
The LTC3204 features automatic burst mode operation at light loads, which provides a low supply current of 48uA and helps extend battery run time.
A patented constant-frequency architecture offers both low input and low output ripple to minimise switching noise.
Other features include automatic soft start circuitry to prevent excessive inrush current during startup, load disconnect from the input during shutdown, plus current limit and thermal shutdown circuitry.
The LTC3204's high 1.2MHz switching frequency enables the use of tiny external ceramic capacitors, saving size and cost.
Low external parts count of one flying capacitor and two bypass capacitors, in addition to the low profile DFN package make the LTC3204 an extremely compact solution for space-constrained applications.
The LTC3204EDC-3.3 and LTC3204EDC-5 are available in the 6-lead DFN (2 x 2 x 0.75mm) package.
1000-piece pricing starts at $1.50 each. Request a free brochure from Linear Technology Corp ...
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