LB1940T: 2-Channel H-Bridge Constant Current Driver
The LB1940T and LB1940U are 2-phase exciter type bipolar stepping motor driver ICs that feature low-voltage (supporting 3V battery) and low current operation with low saturation voltage. These ICs enable constant-current control of actuators and are optimal for driving the actuators of PC peripherals such as USB compatible scanners and printers. Other target applications include controlling the shutter, iris and AF of digital still cameras.
Features- Low voltage driving
- Low saturation output
- Constant current control
- Built-in reference voltage
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Applications- USB compatible scanners
- Printers
- Digital cameras
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LB1940T-MPB-E | Last Shipments | Pb-free | TSSOP-20 | 948AX | 3 | Fan-Fold | 70 | |
| LB1940T-MPB-H | Last Shipments | Pb-free
Halide free | TSSOP-20 | 948AX | 3 | Fan-Fold | 70 | |
| LB1940T-TLM-H | Active | Pb-free
Halide free | TSSOP-20 | 948AX | 3 | Tape and Reel | 2000 | $0.9653 |
Specifications
| Product | VM Min (V) | VM Max (V) | VCC Min (V) | VCC Max (V) | IO Max (A) | IO Peak Max (A) | Step Resolution | Control Type | Feedback Method | Current Sense | Regulator Output | Fault Detection | Flyback Protection | RDS(on) Typ (Ω) |
|---|
| LB1940T-TLM-H | 1.6 | 7.5 | 1.6 | 7.5 | 0.4 | | 1 | Parallel | | External Resistor | | Thermal | | |
