The LB1980H is a three-phase brushless motor driver that is particularly suitable for VCR capstan motor drivers. Functions: three-phase full-wave drive, built-in torque ripple correction circuit (variable correction ratio), current limiter circuit, upper and lower side output stage over-saturation prevention circuit that does not require external capacitors. FG amplifier, thermal shutdown circuit.
The LB1980H is a monolithic digital IC designed as a three‑phase brushless motor driver, primarily intended for VCR capstan motor applications. It integrates functions such as full‑wave drive, torque‑ripple correction, current limiting, and thermal shutdown.
The datasheet lists electrical characteristics, absolute maximum ratings, pin functions, and a sample application circuit. Key features include a built‑in torque‑ripple correction circuit, an internal current‑limiter, and a saturation‑prevention circuit that operates without external capacitors.
| Maximum supply voltage (Voc max) | 7 V |
|---|---|
| Maximum output current (I_o max) | 1.3 A |
| Operating temperature range (Topr) | -20 °C to +75 °C |
| Supply voltage range (Vs) | 5 V to 22 V |
| Hall input amplitude | +30 to +80 mV |
The maximum supply voltage (Voc max) is 7 V.
The device can deliver up to 1.3 A of output current.
It operates from –20 °C up to +75 °C.
The supply voltage (Vs) may be between 5 V and 22 V.