LB1867M: Two-Phase Brushless Fan Motor Driver
The LB1867M is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of variations, from Low speed to H-High speed and from 60cm to 120cm square using the same PCB. This makes it easy to design highly reliable fan motor installations.
Features- Output protection Zener diode with variable withstand voltageZ1, Z2 pins open: VOLM = 57V (24V specification)Z1, Z2 pins shorted: VOLM = 32V (12V specification)External Zener diode connected across Z1-VCC pins: support for fans with large drive current
- External resistor allows configuration for 12V or 24V
- Direct Hall element connection possible (built-in Hall amplifier with hysteresis supports core without auxiliary electrode)
- Built-in output transistor with 1.0A output current (strengthened negative-current support for core without auxiliary electrode)
- Built-in rotation detection function: Low during rotation and High during stop
- Built-in lockup protection with automatic recovery
- Built-in thermal shutdown
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LB1867M-MPB-E | Lifetime | Pb-free
Halide free | SOIC-14W / MFP-14S | 751CB | 3 | Fan-Fold | 60 | $0.6336 |
| LB1867M-MPB-H | Lifetime | Pb-free
Halide free | SOIC-14W / MFP-14S | 751CB | 3 | Fan-Fold | 60 | $0.6336 |
| LB1867M-TLM-E | Active, Not Rec | Pb-free
Halide free | SOIC-14W / MFP-14S | 751CB | 3 | Tape and Reel | 1000 | $0.6133 |
| LB1867M-TLM-H | Active | Pb-free
Halide free | SOIC-14W / MFP-14S | 751CB | 3 | Tape and Reel | 1000 | $0.6336 |
Specifications
| Product | Phase | VM Min (V) | VM Max (V) | VCC Min (V) | VCC Max (V) | IO Max (A) | IO Peak Max (A) | Control Type | Current Sense | Regulator Output | Fault Detection |
|---|
| LB1867M-TLM-H | 2 | | 60 | 6.4 | 7 | 1 | | Parallel | None | | Lock |
