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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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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Electrical Equipment & Systems

Switches and Latches operate in temperatures up to 150-

Models A1220 and A1221 include dynamic offset cancellation for high-temperature performance. Each unit features silicon chip with voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and short-circuit protected open-collector output that can sink up to 25 mA. On-board regulator permits operation with supply voltages of 3.0-24 V. Package types...

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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...

Read More »
Electronic Components & Devices

White Multi-Chip LEDs offer uniform luminance.

Suited for general lighting applications, gaming equipment, and backlighting of TFT displays, SEPW Series features modular design that allows devices to be assembled into string arrays. Each module combines either 6 or 8 LEDs in 1-4 separate channels. Housed in white thermoplastic case for heat dissipation as well as optimal reflectance and transmittance of light, units incorporate heatsink on...

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 »
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 »
Electrical Equipment & Systems

Switches and Latches operate in temperatures up to 150-

Models A1220 and A1221 include dynamic offset cancellation for high-temperature performance. Each unit features silicon chip with voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and short-circuit protected open-collector output that can sink up to 25 mA. On-board regulator permits operation with supply voltages of 3.0-24 V. Package types...

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

White Multi-Chip LEDs offer uniform luminance.

Suited for general lighting applications, gaming equipment, and backlighting of TFT displays, SEPW Series features modular design that allows devices to be assembled into string arrays. Each module combines either 6 or 8 LEDs in 1-4 separate channels. Housed in white thermoplastic case for heat dissipation as well as optimal reflectance and transmittance of light, units incorporate heatsink on...

Read More »

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