Search results for "Photonic Microsystems"

The new A3987 from Allegro MicroSystems Europe is a microstepping motor driver IC which combines an output drive capability of 50 V and ±1.5 A with built-in translator circuitry and overcurrent protection. The new device is designed to operate bipolar stepper motors in full, half, quarter and sixteenth step modes, and includes a fixed off-time current regulator which has the ability to operate in slow or mixed decay modes. Typical applications ...

The A3986 from Allegro MicroSystems Europe is a dual full-bridge gate driver IC with integrated microstepping translator circuitry. The device is suitable for driving a wide range of industrial bipolar 2-phase stepper motors in the 30 to 500 W power range. Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.

The new A138X family of Hall-effect sensor integrated circuits from Allegro MicroSystems Europe are programmable, analogue-output devices that are offered in a choice of low-profile surface-mount packages.

The new A1351 from Allegro MicroSystems Europe is a high-precision linear Hall-effect sensor IC with a 125 Hz push/pull pulse-width-modulated (PWM) output that is proportional to an applied magnetic field. The A1351 converts an analogue signal from its internal Hall sensor element to a digitally encoded PWM output signal. The coupled noise immunity of the digitally encoded PWM output is far superior to the noise immunity of an analogue output sig...

The new A6281 from Allegro MicroSystems Europe is a three-channel constant-current LED driver IC with an on-chip oscillator for simple programmable brightness control. The new device is ideally suited to driving clusters of red/green/blue (RGB) LEDs in applications where the cluster forms one pixel in a large display or a lighting fixture. It precisely controls LED brightness via 10-bit pulse-width modulation (PWM) on each channel, complemented...

The new A4490 from Allegro MicroSystems Europe is a triple-output stepdown switching regulator integrated circuit providing three high-current outputs that are adjustable from 0.8 V to 5 V with a maximum current of 2 A.

The new A3930 and A3931 from Allegro MicroSystems Europe are automotive-grade motor controller integrated circuits with built-in commutation logic to lessen the burden on the system microprocessor, simplifying system design and reducing cost. The new devices are ideally suited to the control of Hall-commutated 3-phase brushless DC motors driven by external N-Channel MOSFETs. If desired, the Hall sensor inputs can be driven directly by a micropro...

The A6210 from Allegro MicroSystems Europe is an LED driver IC based on a buck (stepdown) regulator circuit using constant ‘on’ time with valley current-mode control. This control scheme allows the use of very short switch ‘on’ times, making the new device ideal for applications requiring high switching frequencies combined with high input voltages and low output voltages.

The A8303 from Allegro MicroSystems Europe is a new addition to the company’s family of LNBR (low-noise block regulator) ICs for use in satellite receivers and LCD TV “combo” receivers. The new device uses small ceramic capacitors rather than electrolytic devices to provide a lower-profile solution, as well as incorporating a key output voltage setting (15.6 V) to accommodate Japan-specific design requirements.

The new A4973 from Allegro MicroSystems Europe is a full-bridge motor driver IC that is designed for bidirectional pulse-width-modulated (PWM) current control of DC motors at continuous output currents up to ±1.5 A and operating voltages up to 50 V.