Linear Technology Corp.
Milpitas, CA 95035
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LED Charge Pump delivers 1 A current with 92% efficiency.
Housed in 3 x 4 x .75 mm, 12-lead DFN package, LTC3216 fractional charge pump has multi-mode architecture that automatically switches between 1X, 1.5X, or 2X boost modes. White LED driver has 900 kHz switching frequency and built-in soft-start circuitry. Independent high and low current settings for flash and torch/video modes are programmed by 2 external resistors, and shutdown mode and current...
Read More »Charger delivers up to 1 A to single-cell Li-Ion battery.
Model LTC4063 standalone single-cell Li-Ion linear battery charger also provides regulated output voltage for system supply. Integrated low dropout linear regulator delivers up to 100 mA and is adjustable from 1.2-4.2 V. Charger operates without microcontroller and delivers up to 1 A to battery from input voltage range of 4.3-8 V. Housed in 3 x 3 mm DFN package, charger has thermal regulation...
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DC/DC Converter includes internal 3 A, 42 V switch.
Current mode, fixed frequency, Model LT3479 operates from input voltage of 2.5-25 V, making it suitable for applications with input sources ranging from single cell Li-Ion to 20 V wall adapter. Both inputs of error amplifier are available, permitting use as boost converter or inverter. Switching frequency can be programmed, via single resistor, between 300 kHz and 3.5 MHz. Offering efficiencies...
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MOSFET Gate Driver offers adjustable voltage from 5-8 V.
Featuring input supply range of 5-25 V, Model LTC4441 provides peak output current of 6 A, which allows DC/DC controller to drive N-channel MOSFETs or multiple MOSFETs in parallel. Open-drain output with adjustable blanking prevents ringing when sensing source current of power MOSFETs. Propagation delay for driving 4.7 nF capacitance with 7.5 V drive voltage is 30 ns. Unit's design permits logic...
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Analog-to-Digital Converter offers 4 kHz multiplexing rate.
With variable speed/resolution, 24-bit Delta Sigma Model LTC2447 features multiplexing architecture to digitize multiple ratiometric sensors. Four differential inputs, coupled with 4 differential reference inputs, allow ratiometric measurements of multiple RTDs, bridges, and pressure sensors. Fifth differential reference can be shared by any or all inputs. For low output rate applications, ADC...
Read More »Dual-Channel DC/DC Converter delivers 42 V outputs.
Housed in 10-lead, 3 x 3 mm DFN package with 0.75 mm profile, LT3471 can be configured as dual boost, boost/inverter, or dual inverter. Output voltage error amplifiers can sense to ground, providing boost or inverting control capability. With input voltage range of 2.4-16 V, 1.3 A, 1.2 MHz converter employs constant frequency current mode PWM architecture, VCESAT bipolar switches, and...
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Silicon Oscillator comes in 1 mm high ThinSOT(TM) package.
With frequency accuracy of Ã-
Read More »PoE Controller includes onboard switching regulator.
Offered in 3 x 5 mm DFN package, Model LTC4267 ensures compliance with IEEE 802.3af Power over Ethernet standard and includes onboard 25 kohm signature resistor and classification current source. Internal 100 V power MOSFET protects against inductive voltage spikes, while dual-level inrush current limit allows for seamless interface with legacy PoE systems. Model LTC4267 fits in powered devices...
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Dual Phase Boost Converter delivers 2 A in 3 x 3 mm DFN.
Able to supply 2 A @ 5 V from 3.3 V input, LTC3428 current mode boost converter has input voltage range of 1.6-4.5 V. External parts count and size are minimized by 1 MHz per phase switching frequency and 2-phase design. External compensation allows feedback loop response to be optimized for particular applications. With efficiency rating to 92%, product features two 93 milliohm, 2 A N-channel...
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ADC Family consumes power at rates down to 230 mW.
Available in 32-pin, 5 x 5 mm QFN package, LTC2220 ADC family include models that range from 10-170 Msps at 12- and 10-bit resolution, as well as 14-bit converters to 80 Msps. Optimized for undersampling, 3 V converters operate at high Intermediate Frequencies (IF); LTC2249 features 575 MHz bandwidth and achieves 85 dB SFDR up to 140 MHz input. Pin-compatible versions, at sample rates of 65, 40,...
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