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Product Detailed Parameters
- Description：IC MOTOR DRIVER 5.5V-50V 20TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushed DC
- Function：Controller - Commutation, Direction Management
- Output Configuration：Pre-Driver - Half Bridge (2)
- Interface：Parallel
- Technology：NMOS
- Step Resolution：-
- Applications：General Purpose
- Current - Output：-
- Voltage - Supply：5.5V ~ 50V
- Voltage - Load：-
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The A4955GLPTR-T is a full-bridge PWM gate driver manufactured by Allegro MicroSystems. It operates within a supply voltage range of 5.5V to 50V and supports a junction temperature range from -40°C to 105°C. The component utilizes NMOS technology and features a parallel interface for control signals. It is housed in a 20-TSSOP package with an exposed pad (20-TSSOP-EP) measuring 4.40mm in width. Designed for brushed DC motor applications, it integrates controller functions for commutation and direction management alongside pre-driver and half-bridge output configurations.
Feature Summary
- Integrates full-bridge PWM gate driving capabilities with dedicated controller functions for commutation and direction management.
- Utilizes NMOS technology to provide robust power switching performance for brushed DC motor applications.
- Features a parallel interface design that simplifies signal connectivity and system integration.
Applications
- Brushed DC motor drive systems
- Industrial automation equipment requiring precise motor direction control
- General-purpose motion control circuits
Procurement Notes
Verify the specific suffix GLPTR-T against official Allegro MicroSystems documentation to confirm the exact tape-and-reel packaging configuration and moisture sensitivity level. Ensure the procurement source provides valid RoHS3 compliance certificates and REACH status reports. Cross-reference the 20-TSSOP-EP footprint dimensions with your PCB layout requirements to guarantee accurate assembly compatibility.
Selection Notes
Select this component when a combined gate driver and controller solution is required for brushed DC motors. The integrated commutation logic reduces external microcontroller load. Verify that the 5.5V to 50V supply range aligns with your system's power architecture. Confirm that the parallel interface meets your control signal timing requirements before finalizing the design.
Part Context
This part belongs to the A4955 series of full-bridge PWM gate drivers. It represents an integrated solution that combines power stage driving with logical control functions. The series is designed to simplify motor control designs by reducing the number of discrete components needed for commutation and protection tasks in brushed DC applications.
Replacement Considerations
Consult official Allegro MicroSystems substitution guides for verified alternatives. Generic cross-model replacements may differ in pinout or thermal characteristics. Do not assume functional equivalence without verifying datasheet specifications for the target substitute part number.
