DC to DC Power Supplies (Converters)
DC/DC Converter offers integrated Schottkys in 3 x 3 mm DFN.
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Press Release Summary:
Dual micropower Model LT3463 features internal 250 mA, ±42 V switches that deliver 40 and -40 V output from input voltage of 2.3-15 V. Burst Mode® Operation enables ultra-low supply current of 40 mA for both channels, while shutdown current is less than 1 mA. Low off-time of 300 ns permits use of tiny inductors and capacitors. Converter is suited for biasing TFT LCDs as well as digital camera CCDs from inputs ranging from Li-Ion to multiple cell alkaline/NiMH batteries.
Original Press Release:
Dual Micropower DC/DC Converter Offers ±40V Boost/Inverter & Integrated Schottkys in a 3 x 3mm DFN
MILPITAS, CA - January 23, 2004 - Linear Technology announces the LT3463, a dual micropower DC/DC Converter with internal Schottky diodes in a 3 x 3mm DFN package. Its internal 250mA, ±42V switches can deliver both a 40V, and a -40V output from an input voltage range of 2.3V to 15V. This makes it ideal for biasing TFT LCDs as well as digital camera Charge-Coupled Devices (CCDs) from inputs that range from Li-Ion to multiple cell alkaline/NiMH batteries. Two 42V Schottky diodes are also integrated into the device, making it the most compact solution available and ideal for space-constrained handheld applications.
The LT3463's dual low VCESAT switches (250mV @ 200mA) combined with a current limited, fixed off-time control scheme conserves operating current, delivering high efficiency over a broad range of load current. The dual internal 42V switches enable high voltage outputs to be generated without the use of costly transformers. Burst Mode® Operation enables an ultra-low supply current of 40mA for both channels, while shutdown current is less than 1mA, providing maximum battery run time for handheld devices. Finally, the LT3463's low off-time of 300ns permits the use of tiny, low profile inductors and capacitors, which combined with a 3x3mm DFN package, minimizes both footprint and cost in space conscious-constrained applications.
The LT3463EDD is available from stock in a 10-Lead DFN package. Pricing starts at $1.95 each for 1,000-piece quantities.
Summary of Features: LT3463
VIN Range of 2.3V to 15V, VOUT up to ±40V
Dual Integrated 42V Schottky Diodes
Generates Well-Regulated Positive & Negative Outputs
Dual Integrated 42V Switches
ISW=250mV(Each)
Low Supply Current: 40uA, <1uA in Shutdown (Both Converters)
Low Profile 3 x 3mm DFN-10 Package
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators,power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequencydevices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.
