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ML4411A - Sensorless Spindle Motor Controller

Download the ML4411A datasheet PDF. This datasheet also covers the ML4411 variant, as both devices belong to the same sensorless spindle motor controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The ML4411 provides complete commutation for delta or wye wound Brushless DC (BLDC) motors without the need for signals from Hall Effect Sensors.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (ML4411_MicroLinearCorporation.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number ML4411A
Manufacturer Micro Linear
File Size 296.51 KB
Description Sensorless Spindle Motor Controller
Datasheet download datasheet ML4411A Datasheet

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Other Datasheets by Micro Linear

Part Number Description
ML4411 Sensorless Spindle Motor Controller
ML4423 1 / 2 / or 3-Phase Variable Speed AC Motor Controller
ML4425 Sensorless BLDC Motor Controller
ML4426 Bi-directional Sensorless BLDC Motor Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
May 1997 ML4411*/ML4411A** Sensorless Spindle Motor Controller GENERAL DESCRIPTION The ML4411 provides complete commutation for delta or wye wound Brushless DC (BLDC) motors without the need for signals from Hall Effect Sensors. This IC senses the back EMF of the three motor windings (no neutral required) to determine the proper commutation phase angle using Phase Lock Loop techniques. This technique will commutate virtually any 3-phase BLDC motor and is insensitive to PWM noise and motor snubbing. The ML4411 is architecturally similar to the ML4410 but with improved braking and brown-out recovery circuitry. Included in the ML4411 is the circuitry necessary for a Hard Disk Drive microcontroller driven control loop.