Allegro MicroSystems, Inc.

Controls & Controllers

Motor Pre-driver IC controls fans, blowers, or pumps.

Single-phase brushless DC motor pre-drivers feature outputs designed to drive N-Channel MOSFET H-Bridges with supply voltages from 8-36 V. The motor speed is regulated by PWM input or external analog voltage, and can be monitored with FG output and minimum speed can be programmed with external voltage. Contained in 5 x 5 x .90 mm QFN package, it has thermal shutdown with hysteresis, under voltage...

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Sensors, Monitors & Transducers

Hall-Effect Sensor offers 125 Hz PWM output.

Targeting automotive and industrial markets in current and position sensing applications, Model A1351 converts analog signal from its internal Hall sensor element to digitally encoded PWM output signal. Integrated BiCMOS monolithic circuit includes Hall element, precision temperature-compensating circuitry to reduce intrinsic sensitivity and offset drift of Hall element, small-signal high-gain...

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Architectural & Civil Engineering Products

RGB LEDs provide uniform luminance.

SEPM Series provides range of high-power ALGaInP red, InGaN green, and blue LEDs that can be used in general lighting applications, amusement and gaming equipment, and for backlighting TFT displays. Each module combines 8 LEDs in 4 or 8 separate channels. RGB multi chip LED comes with heatsink incorporated on bottom of package that can be mated directly to any external radiator through PCB for...

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Low-Noise Current Sensors feature 2,100 Vrms isolation.
Sensors, Monitors & Transducers

Low-Noise Current Sensors feature 2,100 Vrms isolation.

Available in ±5, ±20, or ±30 A versions, with corresponding sensitivity levels of 185, 100, or 66 mV/A, ACS712 bidirectional and ACS713 unidirectional sensors are based on low-noise 0.65 mm BiCMOS process. Integrated shield attenuates high dV/dt voltage transients across leadframe and filter pin can be used to set -3 dB point with capacitor. Total output error is 1.5% at room...

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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...

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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 ±3%, A6285 adds dot correction and other features for...

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Controls & Controllers

Off-Line Switching Regulators simplify power supply designs.

STR-W6250D series is comprised of current-mode PWM ICs that incorporate controller chips made by a high-voltage proprietary BCD process and avalanche-guaranteed MOSFETs. ICs also provide auto-burst mode operation and various functional integrations, including frequency jittering, bias-assist, externally activated shutdown protection, slope compensation, and ac input-independent OCP. These...

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Electrical Equipment & Systems

MOSFET Controllers have on-board commutation logic.

Targeted at automotive Hall commutated three-phase motors driven by discrete external N-Channel MOSFETs, control ICs A3930 and A3931 are temperature rated and operate with battery voltage ranging from 5.5 V to 50 V. Model A3931 provides optional pre-positioning function by driving low Hall inputs. Features include integrated charge pumps, Hall sensor voltage supply, and low current quiescent mode.

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Electrical Equipment & Systems

LED Driver IC targets automotive lighting applications.

High-brightness, adjustable constant current LED driver IC operates from input range of 6-40 V. Linear constant current output can be adjusted to deliver up to 350 mA in typical application. ENABLE input is used to drive LED, which can also be driven with PWM input for dimming of LED brightness. IC is fully protected against shorts to ground or to battery and includes thermal shut-down circuit...

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