LB11850VA: Single-Phase Full-Wave Fan Motor Pre-Driver with Speed Control Function
The LB11850VA is a single-phase bipolar fan motor driver with speed control function that works with a speed feedback signal. A highly efficient, quiet and low power consumption motor driver circuit, with a high speed accuracy and large variable speed can be implemented by adding a small number of external components. This pre-driver is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products.
Features- Pre-driver for single-phase full-wave drive
- On-chip speed control circuit
- External PWM input or analog voltage input enabling variable speed control
- On-chip soft start circuit
- Reactive current cut circuit incorporated
- Constraint protection and automatic reset functions incorporated
- FG (speed detection), RD (lock detection) output
- Constant-voltage output pin for hall bias
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LB11850VA-MPB-E | Last Shipments | Pb-free | SSOP-24 | 565AR | 3 | Fan-Fold | 70 | |
| LB11850VA-MPB-H | Last Shipments | Pb-free
Halide free | SSOP-24 | 565AR | 3 | Fan-Fold | 70 | |
| LB11850VA-TLM-E | Active, Not Rec | Pb-free | SSOP-24 | 565AR | 3 | Tape and Reel | 2000 | $0.6976 |
| LB11850VA-TLM-H | Active | Pb-free
Halide free | SSOP-24 | 565AR | 3 | Tape and Reel | 2000 | $0.6667 |
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 |
|---|
| LB11850VA-TLM-H | 1 | | | 5.5 | 18 | 0.02 | | DC | External Resistor | Yes | Over-Current |
