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| Part Number | UC3637Q | UC3638Q | UC2637Q | UC3637N |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Unitrode | Texas Instruments |
| Product Status | Obsolete | Obsolete | Active | Active |
| Motor Type - Stepper | - | - | - | - |
| Motor Type - AC, DC | Brushed DC | Brushed DC | Brushed DC | Brushed DC |
| Function | Controller - Commutation, Direction Management | Controller - Commutation, Direction Management | Controller - Commutation, Direction Management | Controller - Commutation, Direction Management |
| Output Configuration | Pre-Driver - Half Bridge (4) | Pre-Driver - Half Bridge (2) | Pre-Driver - Half Bridge (4) | Pre-Driver - Half Bridge (4) |
| Interface | Parallel | Parallel | Parallel | Parallel |
| Technology | - | - | - | - |
| Step Resolution | - | - | - | - |
| Applications | General Purpose | General Purpose | General Purpose | General Purpose |
| Current - Output | - | - | - | - |
| Voltage - Supply | 2.5V ~ 20V | 10V ~ 36V | 2.5V ~ 20V | 2.5V ~ 20V |
| Voltage - Load | - | - | - | - |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -25°C ~ 85°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 20-LCC (J-Lead) | 20-LCC (J-Lead) | 20-LCC (J-Lead) | 18-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PLCC (9x9) | 20-PLCC (9x9) | 20-PLCC (8.96x8.96) | 18-PDIP |
