Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO) and crossover current protection. Don’t need special power-up sequencing. A4988 uses a surface mount QFN package (ES), the size is 5 mm × 5 mm, nominal overall package height is 0.90 mm, with an exposed thermal pad to enhance the heat dissipation function.
Features
Automatic current decay mode detection/choice.
Mixed with slow current decay mode.
The low power dissipation of synchronous rectifier.
Internal UVLO(ultra voltage lockout).
Crossover current protection.
Thermal shutdown circuit.
Ground fault protection.
Loading and short circuit protection.
The optional five-step mode: full, 1/2, 1/4, 1/8 and 1/16.
Specification
| Input Supply Voltage (VDC) | 8 ~ 35 |
| Current (No Hestsink) | 1 A |
| Current (With Hestsink) | 2 A |
| Logic Input (V) | 3 ~ 5.5 |
Reviews
There are no reviews yet.