Allegro MicroSystems, Inc.
Marlborough, MA 01752
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Hot Swap Controller includes power good indication.
Consisting of Hall-effect current sensor with integrated charge pump, gate driver, and multiple levels of load fault protection, 12 V Model ACS761 provides hot swap control and short circuit protection in single IC without external shunt resistor. Resistance of internal current conductor is typically 1.5 mW, and fixed over current fault threshold is set internally to 40 A. PGOOD pins provide...
Read More »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 »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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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 »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 Ã-
Read More »Dual-Channel Sensor detects speed and direction.
Suited for applications incorporating encoder ring magnet targets, Model A3423 features 2 Hall elements that are spaced 1.63 mm apart and photo-lithographically aligned to better than 1 Ã-µm. Low-drift amplifiers guarantee symmetry between switches to maintain signal quadrature, while on-chip regulator allows use of device over operating voltage of 3.8-24.0 V. Offering temperature stability,...
Read More »Integrated Circuit suits 12 V hot-swap applications.
Combining Hall-effect current sensing with hot-swap control circuitry, Model ACS760 incorporates external high-side FET gate drive, and produces analog output voltage proportional to applied current. User-controlled soft-start/hot-swap function is accessed via logic enable input pin. Housed in QSOP package, unit is designed for single-supply operation from 10.8-13.2 V. It has 1.5 mW internal...
Read More »Full-Bridge Motor Driver works with brushless DC motors.
Designed to drive low-voltage bipolar brushless DC motors, A1442 achieves commutation via one Hall element sensor to detect rotational position of alternating-pole ring magnet. Low-voltage design techniques help achieve device functionality down to 1.8 V VDD, and high-density CMOS semiconductor process allows integration of all necessary electronics. Integrated single chip solution does not...
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