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LB11850VA - Monolithic Digital IC

Description

of Pre-driver Block

1: SGND is connected to the control circuit power supply system.

2: For the signal-side power stabilization capacitor, the capacitance of more than 0.1µF is used.

Features

  • Pre-driver for single-phase full-wave drive →PMOS-NMOS is used as an external power TR, enabling high-efficiency and low-power-consumption drive by means of the low-saturation output and single-phase full-wave drive.
  • On-chip speed control circuit →The speed control (closed loop control) using a speed feedback signal makes it possible to achieve higher speed accuracy and lower speed fluctuations when supply voltage fluctuates or load fluctuates, compared with an openloop contr.

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Full PDF Text Transcription

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Ordering number : ENA0609A Monolithic Digital IC LB11850VA www.DataSheet4U.com For Fan Motor Single-Phase Full-Wave Pre-Driver with Speed Control Function Overview 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.
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