| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
4,099 pcs
|
4099 pcs | On Request | 1 | On Request | On Request | 1404+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Applications | |
| Current | |
| Function | |
| Interface | |
| Lead Style | |
| Motor Type | |
| Mounting Type | |
| Operating Temperature | |
| Output Configuration | |
| Step Resolution | |
| Supplier Device Package | |
| Supplier Package | |
| Technology | |
| Voltage |
The Allegro Microsystems A3977SEDTR-T is a complete microstepping motor driver designed for bipolar stepper motors. It supports full, half, quarter, and eighth-step modes, providing an output drive capability of 35V and ±2.5A. The integrated translator simplifies implementation, requiring only a STEP input pulse for motor control, making it ideal for applications without complex microprocessors.
Key electrical specifications include a typical RDS(on) of 0.45 Ω for source and 0.36 Ω for sink. The device operates with a logic supply voltage range of 3.0 to 5.5V and a load supply voltage range of 8V to 35V. It features internal circuit protection, including thermal shutdown, undervoltage lockout (UVLO), and crossover-current protection.
This IC is supplied in a 44-pin PLCC package and is designed for surface mounting. The operating temperature range is -20°C to 150°C (TJ). Its design incorporates synchronous rectification for improved power dissipation during PWM operation.
The A3977SEDTR-T is suitable for general-purpose applications requiring precise stepper motor control. Its ease of use and integrated features reduce design complexity and component count.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.25 | $2.25 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum output voltage is 35 V.
The maximum continuous output current is 2.5 A.
The logic supply voltage range is 3.0 to 5.5 V.
The operating temperature range is -20°C to 150°C (TJ).
It is supplied in a 44-LCC (J-Lead) package for surface mounting.
It supports full, half, quarter, and eighth-step resolutions.