패키징 정보
| 패키지 | 핀 HTSSOP (PWP) | 24 |
| 작동 온도 범위(°C) -40 to 125 |
| 패키지 수량 | 캐리어 2,000 | LARGE T&R |
DRV8886AT의 주요 특징
- PWM microstepping stepper motor driver
- Up to 1/16 microstepping
- Non-circular and standard ½ step modes
- Integrated current sense functionality
- No sense resistors required
- ±6.25% Full-scale current accuracy
- Smart tune adaptive decay technology,
slow, and mixed decay options - 8 to 37-V Operating supply voltage range
- Low RDS(ON): 550 mΩ HS + LS at 24 V, 25°C
- High current capacity
- 3-A Peak per bridge
- 2-A Full-scale per bridge
- 1.4-A rms per bridge
- Dynamic and fixed off-time PWM current regulation
- Simple STEP/DIR interface
- Low-current sleep mode (20 µA)
- Small package and footprint
- 24 HTSSOP PowerPAD™ package
- 28 WQFN package
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Fault condition indication pin (nFAULT)
DRV8886AT에 대한 설명
The DRV8886AT is a stepper motor driver for industrial and consumer end equipment applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8886AT is capable of driving up to 2-A full scale or 1.4-A rms output current (24-V and TA = 25°C, dependent on PCB design).
The DRV8886AT uses an internal current sense architecture to eliminate the need for two external power sense resistors saving PCB area and system cost. The DRV8886AT uses an internal PWM current regulation scheme adjustable between smart tune adaptive decay technology, slow, and mixed decay options. Smart tune adaptive decay technology automatically adjusts for optimal current regulation performance and compensates for motor variation and aging effects.
A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in different step modes ranging from full-step to 1/16 microstepping. A low-power sleep mode is provided for very low standby quiescent standby current using a dedicated nSLEEP pin.
Device protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.