Pre-Driver ICs drive external N-Channel MOSFETs.

Press Release Summary:



Pre-Driver IC Family fills need for driving either DC brush or DC brushless motors in systems with motor supply voltages as low as 7 V and as high as 60 V. Wide operating temperature range, fault diagnostics and reporting, and operation over wide supply voltage make family suited for harsh automotive environment. Each is offered in various options of surface mount packages, including low profile and thermally efficient e-LQFP and e-TSSOP packages.



Original Press Release:


Allegro Microsystems, Inc. Announces Family Of Pre-Driver ICS For Driving High Current Automotive And Industrial Actuators


New Pre-driver family (A3925, A3932, A3935, A3938, A3940, A3946)

Worcester, MA - January 14, 2004 - Allegro MicroSystems, Inc. announces the introduction of a family of pre-driver IC products designed to drive external N-Channel MOSFETs. This family of products fills the need for driving either DC brush, or DC brushless (BLDC) motors in systems with motor supply voltages as low as 7V and as high as 60V.

Part    Operating   Output     Package      Special        1 K
Number Voltage Topology Features Pricing
A3925 18V to 60V Three-phase 36L QSOP Automotive $3.59
bridge 48L e-LQFP Grade
A3932 12V to 50V Three-phase 32L PLCC On-chip $3.80
bridge 38L TSSOP commutation
logic
A3935 7V to 40V Three-phase 36L QSOP Automotive $3.31
bridge 48L e-LQFP Grade
A3938 12V to 50V Three-phase 36L QSOP Power-down $3.91
bridge 38L TSSOP Brake mode
A3940 7V to 40V Full-bridge 28L SOIC Automotive $2.46
28L e-TSSOP Grade
A3946 7V to 60V Half-bridge 16L SOIC Automotive $1.61
16L e-TSSOP Grade


A key target market for these pre-driver ICs is the automotive market. Important features such as wide operating temperature range, fault diagnostics and reporting, and operation over a wide supply voltage range make the Allegro product family an excellent fit for the harsh automotive environment. In addition, several of the ICs are designed to fully operate up to 60V allowing use in next generation automotive 42V systems.

The Allegro pre-driver family is manufactured using Allegro's ABCD3 (Allegro Bipolar CMOS DMOS 3rd generation) process. Each IC is offered in various options of surface mount packages, including some in low profile and thermally efficient e-LQFP and e-TSSOP packages.

Allegro MicroSystems, Inc. is a supplier of advanced mixed-signal power semiconductors and Hall-effect sensors targeted toward the automotive, communications, computer/office automation, consumer and industrial markets. It maintains a leadership position in the integrated magnetic sensor and integrated motor driver product segments. With over 2,000 employees, Allegro is headquartered in Worcester, MA. Further information about Allegro, as well as free samples on our
products, can be found at www.allegromicro.com.

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