A3988SJPTR-1-T
Motor Driver ICs
Technology: Yes
Features: Power-on reset;Overvoltage protection;Built-in charge pump;Overcurrent Protection;Short-Circuit Protection;Over temperature protection;Low voltage protection;Under-voltage lockout;Dead-time / shoot-through protection
Operating Temperature: -20℃~+85℃
Output Current: 1.2A
Number of H-bridges: 4
Drive Type: Bipolar Driver
Step Resolution: 4
RDS(on): 1.4Ω
Technical Specifications
| Type | Description |
|---|---|
| Interface | - |
| Drive Type | Bipolar Driver |
| Number of H-Bridges | 4 |
| Technology | Yes |
| Step Resolution | 4 |
| Control Voltage | 3V~5.5V |
| Type | Description |
|---|---|
| Motor Drive Voltage(Vm) | - |
| Features | Power-on reset;Overvoltage protection;Built-in charge pump;Overcurrent Protection;Short-Circuit Protection;Over temperature protection;Low voltage protection;Under-voltage lockout;Dead-time / shoot-through protection |
| Operating Temperature | -20°C~+85°C |
| Output Current | 1.2 A |
| Rds On Ohm | 1.4Ω |
| Package / Case | LQFP-48-EP(7x7) |
Product Introduction
The A3988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated at up to 1.2 A and 36 V. The A3988 incorporates fixed off-time PWM current regulators and a 2-bit nonlinear DAC, enabling full-step, half-step, and quarter-step control for stepper motors, as well as forward, reverse, and coast mode control for DC motors. The PWM current regulator employs Allegro™ patented mixed decay mode to reduce audible motor noise, improve step accuracy, and reduce power dissipation. An internal synchronous rectification control circuit is provided to improve power dissipation during PWM operation. Protection features include thermal shutdown with hysteresis, UVLO, and crossover-current protection, with no special power-up sequencing required. The A3988 is available in two packages — EV and JP — both with an exposed power pad for improved thermal performance. The EV package is a 6 mm × 6 mm, 36-pin QFN with a nominal overall package height of 0.90 mm. The JP package is a 7 mm × 7 mm, 48-pin LQFP. Both packages are lead (Pb) free with 100% matte tin leadframe plating.
Features
- Output rated voltage 36 V
- 4 full bridges
- Dual stepper motor driver
- High current output
- 3.3 V and 5 V compatible logic supply
- Synchronous rectification
- Internal undervoltage lockout (UVLO)
- Thermal shutdown circuit
- Cross-current protection
- Thin QFN package
Applications
- Stepper motor drive
- DC motor drive
Datasheet
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS |
| Type | Details |
|---|---|
| ECCN | EAR99 |
Sourcing Information
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