A4988SETTR-T
WQFN-28-EP(5x5) Motor Drivers, Controllers RoHS
DMOS Microstepping Driver with Translator And Overcurrent Protection
- Manufacturer
- ALLEGRO
- Manufacturer part #
- A4988SETTR-T
- Store part #
- C38437
- Package / case
- WQFN-28-EP(5x5)
- Category
- Motor Drivers, Controllers
- Packaging
- Tape & Reel (TR)
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
23,041 in stock
#C38437
Stock & price checked 6 days ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 1+ | ₹138.21 | ₹138.21 |
| 10+ | ₹120.83 | ₹1,208.30 |
| 30+ | ₹104.31 | ₹3,129.30 |
| 100+ | ₹91.92 | ₹9,192.00 |
| 500+ | ₹86.92 | ₹43,460.00 |
| 1,500+ | ₹84.31 | ₹1,26,465.00 |
1 × ₹138.21
₹138.21
excl. GST
₹163.09 incl. 18% GST
- Dispatch in 7–10 working days
- GST invoice with every order
- Standard pack: 1,500 per reel
A4988SETTR-T
₹138.21 for 1 + GST
Specifications
- Drive Type
- Bipolar Driver
- Number of H-bridges
- 2
- Features
- Motor step-out prevention function;Power-on reset;Overvoltage protection;Built-in charge pump;Overcurrent Protection;Short-Circuit Protection;Over temperature protection;Under-voltage lockout;Dead-time / shoot-through protection
- Technology
- Yes
- Interface
- STEP/DIR
- Operating Temperature
- -20℃~+85℃
- Output Current
- 2A
- Step Resolution
- 1;2;4;8;16
- Control Voltage
- 3V~5.5V
- RDS(on)
- 320mΩ
Packaging & compliance
- RoHS
- ROHS3 Compliant
- Lifecycle
- Active
- ECCN
- EAR99
- Packaging
- Tape & Reel (TR)
- Standard pack
- 1,500 / Reel
- Sold per
- Piece
- Minimum order
- 1
- Unit weight
- 0.066 g
Overview
The A4988 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4988 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes. The translator is the key to the easy implementation of the A4988. Simply inputting one pulse on the STEP input drives the motor one microstep. There are no phase sequence tables, high frequency control lines, or complex interfaces to program. The A4988 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. During stepping operation, the chopping control in the A4988 automatically selects the current decay mode, Slow or Mixed. In Mixed decay mode, the device is set initially to a fast decay for a proportion of the fixed off-time, then to a slow decay for the remainder of the off-time. Mixed decay current control results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes: thermal shutdown with hysteresis, undervoltage lockout (UVLO), and crossover-current protection. Special power-on sequencing is not required. The A4988 is supplied in a surface mount QFN package (ET), 5 mm × 5 mm, with a nominal overall package height of 0.90 mm and an exposed pad for enhanced thermal dissipation. It is lead (Pb) free (suffix -Γc), with 100% matte tin plated leadframes.
Key features
- Low RDS(ON) outputs
- Automatic current decay mode detection/selection
- Mixed and Slow current decay modes
- Synchronous rectification for low power dissipation
- Internal UVLO
- Crossover-current protection
- 3.3 and 5 V compatible logic supply
- Thermal shutdown circuitry
- Short-to-ground protection
- Shorted load protection
- Five selectable step modes: full, 1/2, 1/4, 1/8, and 1/16
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