Quality Standards and Environmental Certifications

A3909: Dual Full Bridge Motor Driver

A3909 Datasheet
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Description

The A3909 is a dual full bridge motor driver, designed for 12 V medium power applications. The outputs are rated for operation through a power supply range of 4 to 18 V, and capable of up to 1 A per phase.

Paralleling the outputs is possible for higher amperage single DC motor applications.

The four inputs (IN1 to IN4) can control DC motors in forward, reverse, brake, and coast modes, or a bipolar stepper motor in full- and half-step modes.

The A3909 is supplied in a 10-pin MSOP package with exposed thermal pad (suffix LY) and a 10-pin SSOP (suffix LN) for wave solder applications. Both packages are lead (Pb) free with 100% matte tin leadframe plating.

Top Features

  • 低的RDS(on)outputs
  • Drives two DC motors or single stepper motor
  • Low power standby (Sleep) mode with zero current drain
  • Thermal shutdown protection
  • Parallel operation option for 1.8 A, single DC motor
  • Overcurrent protection:
    • Output to supply short
    • Output to GND short
    • Output load short
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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant		 Part Composition /
RoHS Data		 Comments Samples Check Stock
APEK3909GLY-01-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
A3909GLNTR-T 10-lead SSOP -40°C to 105°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
A3909GLYTR-T 10-lead MSOP -40°C to 105°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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