規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| MotorType-ACDC | Brushless DC (BLDC) |
| Function | Controller - Commutation, Direction Management |
| OutputConfiguration | Pre-Driver - Half Bridge (3) |
| Interface | Parallel |
| Technology | Power MOSFET |
| Applications | Automotive |
| Voltage-Supply | 5.5V ~ 50V |
| OperatingTemperature | -40°C ~ 150°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 28-TSSOP (0.173, 4.40mm Width) Exposed Pad |
概述
Description
A4939KLPTR-5-T is a motor-driver IC (A4939 family) from Allegro MicroSystems. It’s designed to drive stepper and brushless DC motors, providing high‑current output stages and control logic that can be driven by a microcontroller. Typical features include adjustable current regulation, a step/dir (or PWM) interface, and built‑in protective/diagnostic functions (overcurrent, undervoltage, thermal). The -5-T suffix indicates tape-and-reel packaging, with KLP/LPTR denoting the specific package type. Common applications are motor drives in printers, robotics, actuators, and automotive subsystems. For exact pinout, electrical characteristics, and protection options, refer to the specific A4939KLPTR-5-T datasheet.
Features
A4939KLPTR-5-T features (concise):
- 2-phase bipolar stepper motor driver with PWM current regulation
- Adjustable coil current via VREF
- Step and Direction inputs; Enable/Sleep control
- Microstepping support (up to ~16 microsteps per full step, configurable)
- Protection: overcurrent, overtemperature, undervoltage lockout
- Fault/diagnostic indication
- Efficient current decay options for smooth operation
- Wide operating voltage range and robust performance
- Mounted in the KLPTR-5-T package (compact, thermally capable)
Note: This summary focuses on common capabilities of the A4939-series in a KLPTR-5-T package. For exact electrical specs and pinout, please refer to the official datasheet.
- 2-phase bipolar stepper motor driver with PWM current regulation
- Adjustable coil current via VREF
- Step and Direction inputs; Enable/Sleep control
- Microstepping support (up to ~16 microsteps per full step, configurable)
- Protection: overcurrent, overtemperature, undervoltage lockout
- Fault/diagnostic indication
- Efficient current decay options for smooth operation
- Wide operating voltage range and robust performance
- Mounted in the KLPTR-5-T package (compact, thermally capable)
Note: This summary focuses on common capabilities of the A4939-series in a KLPTR-5-T package. For exact electrical specs and pinout, please refer to the official datasheet.
Pinout
- Pin count: 8 pins
- Function: Hall-effect latch/magnetic switch sensor with latched output (used for detecting magnetic poles; provides Vcc, GND, and output with a latch feature).
- Function: Hall-effect latch/magnetic switch sensor with latched output (used for detecting magnetic poles; provides Vcc, GND, and output with a latch feature).
Manufacturer
Manufacturer: Allegro MicroSystems, LLC.
Allegro MicroSystems is a semiconductor company that designs and manufactures Hall-effect sensors and motor-control ICs for automotive, industrial, and consumer applications.
Allegro MicroSystems is a semiconductor company that designs and manufactures Hall-effect sensors and motor-control ICs for automotive, industrial, and consumer applications.
Application
Applied areas for A4939KLPTR-5-T:
- Motor drive and control: small DC, stepper, and brushless DC motors
- Robotics and automation: actuators, wheels, arms, hobby robots
- Printers, CNC machines, and 3D printers
- Automotive actuators and related mechatronics
- General compact, energy-efficient motor-driver applications in consumer electronics and industrial equipment
Note: Verify the exact datasheet for specific pinout, features, and performance limits.
- Motor drive and control: small DC, stepper, and brushless DC motors
- Robotics and automation: actuators, wheels, arms, hobby robots
- Printers, CNC machines, and 3D printers
- Automotive actuators and related mechatronics
- General compact, energy-efficient motor-driver applications in consumer electronics and industrial equipment
Note: Verify the exact datasheet for specific pinout, features, and performance limits.
Package
Package type: KLPTR is Allegro’s lead-frame (LQFP‑style) plastic package with tape-and-reel packaging. The “-T” suffix confirms Tape & Reel.
