Allegro MicroSystems, Inc.

Gate Driver features integrated microstepping translator.
Controls & Controllers

Gate Driver features integrated microstepping translator.

Suitable for driving medium to high-power bipolar 2-phase stepper motors, dual full-bridge Model A3986 provides all necessary circuitry to ensure that gate-source voltage of high-side and low-side external MOSFETs is above 10 V, and gate capacitance is quickly charged and discharged. Two sinusoidal DACs generate reference voltage for 2 separate fixed-off-time PWM current controllers. Full step to...

Read More »
SMPS Primary Regulators feature low EMI noise.
Controls & Controllers

SMPS Primary Regulators feature low EMI noise.

With low EMI noise characteristics at more than 2 MHz, STR-W67xx series of low-power off-line SMPS primary regulators includes quasi-resonant topology ICs, and enables output powers up to 160 W at 120 Vac, or 240 W at 230 Vac input. Soft switching mechanism turns on internal MOSFET at close point to VDS bottom point, while bottom-skip function skips first bottom of VDS and turns on MOSFET at...

Read More »
Hall-Effect Sensors operate down to 2.5 V.
Sensors, Monitors & Transducers

Hall-Effect Sensors operate down to 2.5 V.

Suited for battery-operated applications, analog-output Models A1391/2 and A1393/5 include sleep enable pin and have high impedance outputs while in sleep mode. By employing logic level on sleep enable pin, users can configure power consumption for device by modulating when device is active and sleeping. Housed in 2.00 x 3.00 x 0.75 mm packages, Models A1391/2 feature gains of 1.25 and 2.50 mV/G,...

Read More »
Hall-Effect Sensor is suited for 3.6-24 V.
Sensors, Monitors & Transducers

Hall-Effect Sensor is suited for 3.6-24 V.

Digital switch A3245 has omnipolar capability that eliminates requirement for signal conditioning as well as need for magnet orientation for position sensing applications during manufacturing. Product incorporates voltage regulator, Hall-voltage generator, and small-signal amplifier in addition to chopper stabilization, Schmitt trigger, and short-circuit-protected open-collector output. Unit also...

Read More »
DMOS Microsteppping Drivers have built-in translator.
Controls & Controllers

DMOS Microsteppping Drivers have built-in translator.

With output ratings of 35 V and 1.5 A, A3983 and A3984 operate bipolar stepper motors in full-, half-, quarter-, eighth- (A3983), and sixteenth- (A3984) step modes. They combine STEP and DIRECTION interface with 7.8 x 6.4 mm eTSSOP package and feature internal synchronous rectification control circuitry as well as fixed off-time PWM current regulator. Products also provide internal circuit...

Read More »
Speed Sensor incorporates self-calibrating feature.
Sensors, Monitors & Transducers

Speed Sensor incorporates self-calibrating feature.

Supplied in SE package, ATS673/4LSE Gear-Tooth Sensor is designed to operate with True Power-On State (TPOS) recognition. It incorporates single-element Hall-effect sensor as well as signal-processing circuitry that switches in response to changing magnetic signals created by rotating ferrous targets. Digital tracking of analog signal is used to set switching threshold of device. Sensor is...

Read More »
Integrated Circuits suit switched mode power supplies.
Electrical Equipment & Systems

Integrated Circuits suit switched mode power supplies.

Series STR-A6100 is designed for power supplies with output power up to 20 W at universal input or 24 W at 230 Vac. Auto-standby function reduces input power consumption to less than 50 mW at 230 Vac by burst-mode operation, which is stabilized by auto-bias function. Series STR-W67xx includes quasi-resonant topology ICs in fully molded TO-220 package that contains controller chip and MOSFET....

Read More »
Linear Hall-Effect Sensors are field-programmable.
Sensors, Monitors & Transducers

Linear Hall-Effect Sensors are field-programmable.

With modified 4-lead SIP package, one-time field-programmable A1373 and A1374 feature low-noise ratiometric outputs. Chopper stabilization technique used in Hall element provides low initial offset and minimal drift over temperature. Programmable on output pin, user can set gain, quiescent voltage output, and temperature coefficient after finished sensor assembly. Post-assembly programming...

Read More »
Multi-Output Regulator suits automotive applications.
Controls & Controllers

Multi-Output Regulator suits automotive applications.

Targeted for use in under-hood environments in 14 or 24 V automotive systems, A8450 incorporates controlled power-up sequencing and power-on-reset functionality as well as fault detection and reporting. IC features 4 regulator outputs: 2 low-voltage outputs that provide DSP or microprocessor core and I/O voltages, and 2 linear 5 V tracking regulators. Both feature current foldback circuitry....

Read More »
Hall-Effect Current Sensor has integrated current path.
Sensors, Monitors & Transducers

Hall-Effect Current Sensor has integrated current path.

Available in 15 and 5 A versions, SOICS-packaged Model ACS704 determines bi-directional ac or dc currents by using Hall-effect magnetic sensor to measure field generated by current flow. Because there is no electrical connection between current path and sensing circuit, unit provides minimum of 800 V of isolation without additional components. With 1.5 mohm resistance, sensor operates from single...

Read More »

All Topics