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TOLL TMI8420/Q 8-45V 2.5A Microstepping Bipolar Stepper Motor Driver
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pTOLL TMI8420/Q — microstepping bipolar stepper motor driver, HTSSOP28, 45 V./p
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TOLL TMI8420/Q 8-45V 2.5A Microstepping Bipolar Stepper Motor Driver
TOLL TMI8420/Q 8-45V 2.5A Microstepping Bipolar Stepper Motor Driver belongs to the TOLL range. It acts as a microstepping bipolar stepper motor driver, comes in HTSSOP28.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer | TOLL Microelectronics (Tuoer Micro) |
| Part number | TMI8420/Q |
| Device type | Microstepping bipolar stepper motor driver |
| Product line | Motor Driver ICs |
| Input / supply voltage | 8 V to 45 V |
| Output current | 2.5 A maximum drive current at 25 C |
| Package | HTSSOP28 |
| Microstepping | Up to 1/32 step |
| Decay modes | Slow, fast, mixed |
| Control interface | STEP / DIR |
| Protection | OCP, TSD, VM UVLO, nFAULT flag |
| Datasheet | TMI8420_DS_CN_V1.1 |
Design Notes
- Check the reference design before finalising external components.
- Thermal pad layout drives continuous current capability.
- Confirm the suffix — package and grade change between variants.
- Datasheet limits apply at the stated test conditions; derate for your ambient.
- Protection thresholds are set by external resistors in most designs.
Where It Is Used
Typical places this IC turns up:
- motor drive
- EV
Shenzhen Gaorunxin Technology Co., Ltd
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