ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC MTR DRV BIPOLAR 3-5.5V 16SOIC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：Bipolar
- Motor Type - AC, DC：Brushed DC
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (2)
- Interface：Parallel
- Technology：Power MOSFET
- Step Resolution：-
- Applications：General Purpose
- Current - Output：1.5A
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：5V ~ 50V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-PowerSOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
Download product information
Overview
The A4973SLBTR-T is a full-bridge PWM motor driver IC from Allegro Microsystems, designed for bidirectional current control of inductive loads. It features a 16-pin PowerSOIC surface-mount package and operates with a logic supply voltage range of 3V to 5.5V. The device supports a maximum load voltage of 50V and delivers a continuous output current of ±1.5A. It incorporates internal fixed off-time PWM current control, allowing peak load current limits to be set via an external sense resistor and reference voltage. The component functions within a junction temperature range of -20°C to 150°C.
Feature Summary
- Integrates full bridge driver with dedicated PWM current control circuitry for precise inductive load management
- Supports selectable fast and slow current decay modes to optimize motor performance under varying conditions
- Includes comprehensive internal protection mechanisms such as thermal shutdown with hysteresis, transient suppression diodes, and cross-conduction protection
Applications
- Brushed DC motor drives requiring bidirectional PWM current control
- Inductive load switching applications
- General purpose motor control systems
Procurement Notes
Verify the specific suffix 'T' indicates tape and reel packaging configuration when sourcing. Confirm that the 16-SOIC footprint matches the target PCB layout dimensions. Ensure the selected variant aligns with the required operating temperature range and voltage specifications for the intended application environment.
Selection Notes
Select this component for applications requiring integrated power MOSFETs with adjustable current limiting capabilities. Consider the DMOS technology benefits over bipolar alternatives for improved power density and switching performance. Evaluate the need for external RC timing networks if custom pulse duration settings are required beyond the internal fixed off-time defaults.
Part Context
The A4973 series represents a transition from bipolar to DMOS technology within Allegro's motor driver lineup, offering enhanced size reduction and switching efficiency. It serves as a direct successor to older bipolar-based drivers, providing higher current capacity and better thermal management in a compact surface-mount package suitable for modern electronic designs.
Replacement Considerations
The A4973 is documented as a direct replacement for the A3953. Verify pinout compatibility and electrical parameter alignment when substituting legacy components.
