Linear releases dual-channel DC/DC converters
A Linear Technology Corp product story
Edited by the Electronicstalk editorial team Nov 11, 2009
Linear Technology has introduced the LT3582, LT3582-5 and LT3582-12 dual-channel DC/DC converters.
These deliver positive and negative outputs required in many biasing applications such as active matrix OLED (organic light-emitting diode) displays as well as CCD (charge-coupled device) applications.
Linear Technology has announced the LT3582, LT3582-5 and LT3582-12 dual channel DC/DC converters.
The LT3582/-5/-12 offer an I2C interface that can dynamically program output voltages, power sequencing and output voltage ramps as the application requires.
Alternatively, these parameters can be set in manufacturing and made permanent via the built in non-volatile OTP (one-time programmable) memory.
The LT3582's positive-output voltage can be set between 3.2 and 12.775V in 25mV steps, whereas the negative output can be set between -1.2 and -13.95V in 50mV steps.
The LT3582-5 and LT3582-12 are preconfigured with +/-5V and +/-12V outputs respectively, useful in many signal-conditioning applications.
The LT3582 series includes two monolithic converters, one boost and one inverting.
The boost converter has an integrated power switch and output disconnect switch, whereas the inverting converter uses a single inductor topology with an integrated power switch.
Both boost and inverting converters use a novel control scheme resulting in low-output voltage ripple and allowing for high conversion-efficiency over a wide load-current range.
The converters' input-voltage range of 2.55 to 5.5V make them ideal for Li-Ion powered applications with efficiencies as high as 88 per cent.
These features of the LT3582 series, when combined with less than 325uA of quiescent current, can maximise battery life.
The combination of tiny external components, no feedback resistors and a tiny 3 x 3mm QFN package provides a tiny (less than 50mm) solution footprint for handheld biasing applications.
The LT3582EUD, LT3582EUD-5 and LT3582EUD-12 are all available from stock in a 3 x 3mm QFN package.
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Contact Linear Technology Corp
Tel +44 1628 477066
Other Linear Technology Corp stories
- Linear introduces micropower boost converter
Linear Technology has brought out the LT8415, a low-noise micropower boost converter with integrated dual half-bridge switches. - DC/DC controller drives N-channel power Mosfets
Linear Technology has announced the LTC3854, a tiny 2mm x 3mm DFN-12 packaged, wide input voltage range synchronous step-down switching DC/DC controller that drives all N-channel power Mosfet stages. - Linear unveils 50V synchronous buck converter
Linear Technology has introduced the LTC3632: a 50V input-capable synchronous buck converter that delivers up to 20mA of continuous output current from a 3 x 3mm (or MSOP8-E) package. - Linear converter achieves +/-1LSB INL and DNL
Linear Technology has introduced the LTC2754-16, a quad 16-bit current output digital-to-analogue converter (DAC) that achieves +/-1LSB integral nonlinearity (INL) and differential nonlinearity (DNL). - Linear DC/DC controller has wide input range
Linear Technology has announced the LT3757, a wide-input-range DC/DC controller for boost, flyback, SEPIC and inverting power supply applications.
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