Allegro MicroSystems, Inc.

Electrical Equipment & Systems

Unipolar Hall-Effect Switch features built-in diagnostics.

With integrated coil surrounding Hall sensing element,Â- A1160 functions asÂ- typical unipolar switch during normal operation: output turns on in presence of south-pole magnetic field and off when field is removed. Diagnostics modeÂ- lets current pass through integrated coils, generating ~20 G of magnetic field. Proximity of coils to Hall sensing elementÂ- lets element sense field...

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Allegro MicroSystems, Inc. Announces Off-Line Quasi-Resonant Switching Regulators
Controls & Controllers

Allegro MicroSystems, Inc. Announces Off-Line Quasi-Resonant Switching Regulators

Flexible Solution with Low Power Consumption Worcester, MA - March 14, 2012 - Allegro MicroSystems, Inc. announces a new series of off-line, quasi-resonant switching regulators. This new series was developed to eliminate the requirement of a dedicated power supply to the standby circuits, by reducing the input power requirement at no load to 30 mW or less for 100 VAC input and to 50 mW or less...

Read More »
Low-Noise Block Regulator offers adjustable current limit.
Controls & Controllers

Low-Noise Block Regulator offers adjustable current limit.

Intended for analog and digital satellite receivers, Model A8299 is a monolithic linear and switching voltage regulator that provides power and interface signals to LNB down converter via coaxial cable. Unit requires few external components, with boost switch and compensation circuitry integrated inside. Housed in 5 x 5 x 0.90 mm QFN-28 package, regulator meets or exceeds OEM requirements for...

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Xenon Photoflash Charger ICs come in 2 x 2 mm DFN package.
Electrical Equipment & Systems

Xenon Photoflash Charger ICs come in 2 x 2 mm DFN package.

Offering charge and trigger voltage logic thresholds set at 1 VHI, models A8732 and A8735 support applications implementing low-voltage control logic, such as mobile phones. Current limit for A8732 can be programmed from 0.45-1.5 in 16 steps with single wire interface, while for A8735 it is fixed at 1 A. Utilizing primary-side voltage sensing, devices eliminate need for secondary-side voltage...

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LED Driver suits medium LCD display backlighting.
Construction Equipment and Supplies

LED Driver suits medium LCD display backlighting.

Targeting automotive applications, Model A8501 integrates boost converter and four 100 mA current sinks. LED channels can be tied together for up to 400 mA sink capability. Operating from single power supply of 8-21 V, constant frequency, current-mode converter withstands up to 40 V. Operating frequency can be set up to 2 MHz to avoid interference with AM radio bands. Pb-free IC is housed in...

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Controls & Controllers

BLDC Full-Bridge Motor Driver integrates Hall commutation.

Capable of full functionality down to 1.8 V VDD, A1448 is designed to drive low-voltage, brushless DC vibration motors in portable devices. Singular input control allows for direct input PWM for speed control, can initiate active braking function, and acts as enable pin to engage micro-power sleep mode. Hall sensor, used to detect rotational position of alternating-pole ring magnet, achieves...

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Electronic Components & Devices

IGBT Modules efficiently minimize design space.

Offering 85-253 Vac input voltage and 1.5-3 A output current, SLA6800MP and SMA6800MP series withstand voltages to 500 V (MOSFET breakdown voltage) and 600 V (IGBT breakdown voltage). This results in Inverter Power Module suited for controlling 3-phase motor inverters used to drive motors of residential and commercial appliances. IC consists of necessary power elements, 6 MOSFETS or 6 IGBTs, and...

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LED Driver ICs are optimized for display applications.

Supplied in SMT packages, A6282 and A6285 have 16 constant-current output channels, each capable of driving up to 50 mA. Serial data inputs and outputs support cascading, and ability to operate with LED supply voltages to 12 V allows stacking of 3 or more LEDs per channel. While A6282 offers channel-to-channel output current matching of Â-

Read More »
Electrical Equipment & Systems

Unipolar Hall-Effect Switch features built-in diagnostics.

With integrated coil surrounding Hall sensing element,Â- A1160 functions asÂ- typical unipolar switch during normal operation: output turns on in presence of south-pole magnetic field and off when field is removed. Diagnostics modeÂ- lets current pass through integrated coils, generating ~20 G of magnetic field. Proximity of coils to Hall sensing elementÂ- lets element sense field...

Read More »
Allegro MicroSystems, Inc. Announces Off-Line Quasi-Resonant Switching Regulators
Controls & Controllers

Allegro MicroSystems, Inc. Announces Off-Line Quasi-Resonant Switching Regulators

Flexible Solution with Low Power Consumption Worcester, MA - March 14, 2012 - Allegro MicroSystems, Inc. announces a new series of off-line, quasi-resonant switching regulators. This new series was developed to eliminate the requirement of a dedicated power supply to the standby circuits, by reducing the input power requirement at no load to 30 mW or less for 100 VAC input and to 50 mW or less...

Read More »
Low-Noise Block Regulator offers adjustable current limit.
Controls & Controllers

Low-Noise Block Regulator offers adjustable current limit.

Intended for analog and digital satellite receivers, Model A8299 is a monolithic linear and switching voltage regulator that provides power and interface signals to LNB down converter via coaxial cable. Unit requires few external components, with boost switch and compensation circuitry integrated inside. Housed in 5 x 5 x 0.90 mm QFN-28 package, regulator meets or exceeds OEM requirements for...

Read More »
Xenon Photoflash Charger ICs come in 2 x 2 mm DFN package.
Electrical Equipment & Systems

Xenon Photoflash Charger ICs come in 2 x 2 mm DFN package.

Offering charge and trigger voltage logic thresholds set at 1 VHI, models A8732 and A8735 support applications implementing low-voltage control logic, such as mobile phones. Current limit for A8732 can be programmed from 0.45-1.5 in 16 steps with single wire interface, while for A8735 it is fixed at 1 A. Utilizing primary-side voltage sensing, devices eliminate need for secondary-side voltage...

Read More »
LED Driver suits medium LCD display backlighting.
Construction Equipment and Supplies

LED Driver suits medium LCD display backlighting.

Targeting automotive applications, Model A8501 integrates boost converter and four 100 mA current sinks. LED channels can be tied together for up to 400 mA sink capability. Operating from single power supply of 8-21 V, constant frequency, current-mode converter withstands up to 40 V. Operating frequency can be set up to 2 MHz to avoid interference with AM radio bands. Pb-free IC is housed in...

Read More »
Controls & Controllers

BLDC Full-Bridge Motor Driver integrates Hall commutation.

Capable of full functionality down to 1.8 V VDD, A1448 is designed to drive low-voltage, brushless DC vibration motors in portable devices. Singular input control allows for direct input PWM for speed control, can initiate active braking function, and acts as enable pin to engage micro-power sleep mode. Hall sensor, used to detect rotational position of alternating-pole ring magnet, achieves...

Read More »
Electronic Components & Devices

IGBT Modules efficiently minimize design space.

Offering 85-253 Vac input voltage and 1.5-3 A output current, SLA6800MP and SMA6800MP series withstand voltages to 500 V (MOSFET breakdown voltage) and 600 V (IGBT breakdown voltage). This results in Inverter Power Module suited for controlling 3-phase motor inverters used to drive motors of residential and commercial appliances. IC consists of necessary power elements, 6 MOSFETS or 6 IGBTs, and...

Read More »

LED Driver ICs are optimized for display applications.

Supplied in SMT packages, A6282 and A6285 have 16 constant-current output channels, each capable of driving up to 50 mA. Serial data inputs and outputs support cascading, and ability to operate with LED supply voltages to 12 V allows stacking of 3 or more LEDs per channel. While A6282 offers channel-to-channel output current matching of Â-

Read More »

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