Allegro MicroSystems, Inc.

Allegro MicroSystems, Inc. Introduces New Automotive 2.2 MHz Multiple Output Regulator Family
Controls & Controllers

Allegro MicroSystems, Inc. Introduces New Automotive 2.2 MHz Multiple Output Regulator Family

Full Automotive Qualification with High-Frequency Switching (> AM Band) Â- Ã‚ Â Â Â Â  Worcester, MA -  Allegro MicroSystems, Inc. introduces three new automotive power management ICs that use an internal 2.2 MHz constant on-time buck pre-regulator to supply regulated outputs commonly used in automotive CAN and microprocessor controlled applications....

Read More »
Construction Equipment and Supplies

Full-Bridge MOSFET Pre-Driver IC suits portable applications.

Targeting high-current brush DC motors in portable applications, A4957 hasÂ- 7–50 V supply range and comes in 24 lead ES package with bootstrap charge management system. Charge pump regulator provides greater than 10 V gate drive for supply voltages down to 7 V, and bootstrap capacitor provides battery supply voltage required for N-channel power MOSFETs. Each power MOSFET is...

Read More »
Construction Equipment and Supplies

Allegro MicroSystems, Inc. Announces New LED Lighting Series

High Voltage Capacity Allowing Direct Connection to a Wide Range of Supply Voltages Worcester, MA - Allegro MicroSystems, Inc. announces the release of a new simple and efficient family of LED driver ICs that can be configured as buck or buck-boost voltage converters. The LC5220D/S LED series is offered by Allegro and manufactured and developed by Sanken Electric Co., Ltd. in Japan. This new...

Read More »
Construction Equipment and Supplies

Buck LED Driver provides constant current output.

With 6–48 V input supply voltage, 3.0 A Model A6211 integratesÂ- high-side N-channel MOSFET switch for DC-to-DC stepdown conversion. True average current is output using cycle-by-cycle, controlled on-time method. LED current is user-configurable by external current sense resistor, allowing output voltage to be set to optimize constant-current supply for variety of LED array...

Read More »
Controls & Controllers

Full Bridge DC Motor Driver has internal PWM current reference.

Capable of continuous output currents of 1 A, A3918 incorporates 2-stage charge pump that ensures driver has low RDS (on) over entire 2.5–9 V supply range. Features such as internal PWM current reference let user select peak chop current with resistor only. For overcurrent or locked rotor, internal fixed off-time PWM timer sets peak current with addition of current sense resistor. Overcurrent...

Read More »
Construction Equipment and Supplies

High Current LED Driver targets automotive, industrial markets.

Supplied in 16-pin TSSOP, A6268 DC-DC converter controller provides programmable constant current output for driving LEDs in series. Input voltage range makes this IC suited for start/stop designs as well as handling double battery and load dump conditions. Direct PWM control is possible via enable input, and switching frequency is programmable from 100-700 kHz. Driver can be configured as ground...

Read More »
Controls & Controllers

Full-Bridge Motor Driver IC enhances automotive HVAC systems.

Available for automotive HVAC systems, A4950 is designed for PWM control of DC motors and comes in 8-pin SOICN package with exposed thermal pad. Logic interface is available to control speed and direction of DC motor with externally applied PWM control signals, while internal synchronous rectification control circuitry lowers power dissipation during PWM operation. Along with internal circuit...

Read More »
Full-Bridge Motor Driver IC supplies power to office equipment.
Controls & Controllers

Full-Bridge Motor Driver IC supplies power to office equipment.

Supplied in 32-contact, 5 x 5 mm QFN package, Model A3998 incorporates 2 DMOS full-bridge outputs that are capable of 1.5 A at 50 V. Two power supply rails are provided for microprocessor or DSP supplies. Switching buck regulator steps supply down to adjustable low voltage output from 3.3-5 V. This voltage can be used to supply external 3.3 V or 5 V rails and also feeds back into part supplying...

Read More »
Electrical Equipment & Systems

Hall-Effect Linear Sensor IC suits high-current applications.

Available in 5-pin CB package with leadframe of oxygen-free copper and leads plated with 100% matte tin, Pb-free ACS759 is suited for AC or DC current sensing in 3.3 V supply applications in automotive and industrial markets. IC consists of low-offset linear Hall sensor circuit with copper conduction path located near die. Internal resistance of conductive path is 100 Â-µohm typ, and...

Read More »
Stepper Motor Driver IC offers programmability, diagnostics.
Controls & Controllers

Stepper Motor Driver IC offers programmability, diagnostics.

Supplied in 28-pin TSSOP with exposed pad, A4979 has built-in translator and operates bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes at up to 50 V and 1.5 A. IC can be controlled by step and direction inputs or SPI-compatible serial interface. Also, current regulator can be programmed to operate in fixed off-time or fixed frequency PWM. Several decay modes are...

Read More »

All Topics