(China (Mainland))
Product Summary
The A3979SLPT is a complete microstepping motor driver with built-in translator, designed as a pin-compatible replacement for the successful A3979SLPT, with enhanced microstepping (1/16 step) precision. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2.5 A. The A3979SLPT includes a fixed off-time current regulator that has the ability to operate in Slow, Fast, or Mixed decay modes. This current-decay control scheme results in reduced audible motor noise, increased step accuracy, and reduced power dissipation.
Parametrics
A3979SLPT absolute maximum ratings: (1)Load Supply Voltage, VBB: 35 V; (2)Output Current, IOUT: ±2.5 A; (3)Logic Supply Voltage, VDD: 7.0 V; (4)Logic Input Voltage Range, VIN: –0.3 to VDD + 0.3 V when tW > 30 ns; –1 to VDD + 1 V when tW < 30 ns; (5)Sense Voltage, VSENSE: 0.5 V; (6)Reference Voltage, VREF: VDD; (7)Operating Ambient Temperature, TA: –20 to 85℃; (8)Junction Temperature, TJ(max): 150℃; (9)Storage Temperature, Tstg: –55 to 150℃.
Features
A3979SLPT features: (1)±2.5 A, 35 V output rating; (2)Low RDS(On)outputs: 0.28 Ω source, 0.22 Ω sink, typical; (3)Automatic current decay mode detection/selection; (4)3.0 to 5.5 V logic supply voltage range; (5)Slow, Fast or Mixed current decay modes; (6)Home output; (7)Synchronous rectification for low power dissipation; (8)Internal UVLO and thermal shutdown circuitry; (9)Crossover-current protection.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
 A3979SLPTR |
|
IC DRIVER MICROSTEPPING 28-TSSOP |
Data Sheet |
Negotiable |
|
||||||||||||
|
A3979SLPTR-T |
|
IC DRIVER MICROSTEPPING 28-TSSOP |
Data Sheet |
|
|
||||||||||||
