Circuits

Driver Chips offer stall detection without encoder.
Circuits

Driver Chips offer stall detection without encoder.

Utilizing StallGuard(TM) technology for stall detection, TMC246 and TMC249 predict overload for applications where reference point is needed but switch cannot be used. Model TMC246 acts as dual full bridge driver IC for bipolar step motor control. User can choose to operate at temperatures to 105Â-ºC or currents to 1.5 A/phase. Model TMC249 is high-current version of TMC246, supporting up to...

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Battery Charger Controller delivers up to 4 A.
Battery Chargers

Battery Charger Controller delivers up to 4 A.

Standalone switch-mode battery charger controller LTC4002-8.4 charges 2-cell, 8.4 V Li-Ion batteries. For safety and autonomous charge control, product features automatic shutdown, battery preconditioning and temperature sensing, end-of-charge indicator, and 3 hr charge termination timer. Offered in 3 x 3 mm DFN and 8-lead SO packages, current mode PWM controller has 500 kHz switching frequency...

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AC Measurement IC operates to 500 kHz with 1% accuracy.
Circuits

AC Measurement IC operates to 500 kHz with 1% accuracy.

True RMS-DC converter ICs LTC1967 and LTC1968 measure energy of AC signal regardless of waveform shape. With 0.02% linearity, there is no need for in-system calibration, and delta-sigma computational technique is inherently immune from changes vs. temperature, time, and PCB stress. Rail-to-rail inputs can be driven single-ended or differentially, and rail-to-rail outputs feature separate output...

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Battery Charger requires no microcontroller or firmware.
Battery Chargers

Battery Charger requires no microcontroller or firmware.

Offering programmable charge current from 0.4-2 A with ±5% accuracy, autonomous Model LTC4060 charges 1-4 cell NiMH and NiCd batteries. Available in 16-lead TSSOP or 5 x 3 mm DFN package with operating voltage from 4.5-10 V, unit uses external PNP transistor to supply current to battery or battery pack. Charger offers 3 options for terminating charge cycle: negative deltaV, max voltage, or...

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DC/DC Controller suppresses EMI at its source.
Circuits

DC/DC Controller suppresses EMI at its source.

Model LTC3736-1 dual-output, 2-phase, step-down synchronous DC/DC controller has integrated spread spectrum frequency modulation for very low EMI and noise emission. Unit randomly varies switching frequency from 450 to 580 kHz, thereby reducing peak radiated and conducted noise on input and output. It converts input voltages from 2.75 to 9.8 V to output voltages from 0.6 up to VIN. Controller is...

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Audio Processors power consumer audio products.
Signal Processors

Audio Processors power consumer audio products.

Series MAP 440xA/MAP 460xA provide analog outputs and digital pulse width outputs, respectively. Single, mixed-signal ICs integrate DSP core optimized for audio processing, analog I/O, A/D and D/A converters, as well as digital I2S audio ports. Audio processing, sampling rate conversion, signal routing, and I/O-switching is handled by DSP software. Processors enable 7-band graphic equalizer,...

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PWM Controller simplifies power supply design.
Power Controllers

PWM Controller simplifies power supply design.

Utilizing one primary side MOSFET, Model LT1952 delivers synchronous rectifier control. Programmable volt-second clamp provides safeguard for transformer reset that prevents saturation. Controller simplifies design of 25-300 W power supplies with forward current topology such as isolated 48 V input to 12, 5, or 3.3 V output in industrial or telecom applications. Soft-start function offers...

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Step-Up Converter suits low noise blocker applications.
Circuits

Step-Up Converter suits low noise blocker applications.

Designed for low noise blockers (LNBs) used in set-top boxes and integrated digital televisions, LNBH21 power supply and control IC includes step-up voltage converter that works from single input voltage of between 8 and 15 V. It is typically 94% efficient at 750 mA load and has integrated I2C bus that facilitates control and diagnostics with 22 kHz tone signaling. This provides complete...

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Circuits

Multimedia Controller is designed for PC-TV market.

Ngene(TM), based on switched point-to-point PCI Express(TM) architecture, provides native PC connectivity. It features dual channel audio/video and dual transport stream capture, which is complemented by independent host-driven TV-Out. Integrated circuit delivers bandwidth and full duplex nature of PCI Express, combined with buffer management, to create media experience decoupled from graphics...

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Bluetooth(TM) Chip is optimized for mobile phones.
Circuits

Bluetooth(TM) Chip is optimized for mobile phones.

Integrated SiW4000(TM) system-on-chip (SoC) Bluetooth solution, developed using 0.13 micron CMOS process technology, is housed in 4.5 x 4.5 mm BGA package to minimize footprint of pcb. Product requires only 8 external components: 6 capacitors, one inductor, and one band-pass filter. Features include coexistence interface, direct conversion architecture, and synchronous and asynchronous serial...

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