ML4411, ML4411ACS, ML4411CS Selling Leads, Datasheet
MFG:ml Package Cooled:SOP D/C:92/94
ML4411, ML4411ACS, ML4411CS Datasheet download
Part Number: ML4411
MFG: ml
Package Cooled: SOP
D/C: 92/94
ML4411, ML4411ACS, ML4411CS
- Table of contents:
Info of ML4411
Info of ML4411ACS
Info of ML4411CS
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About ML4411
PDF/DataSheet Download
Datasheet: ML4411
File Size: 303623 KB
Manufacturer: MICRO-LINEAR [Micro Linear Corporation]
Download : Click here to Download
About ML4411ACS
PDF/DataSheet Download
Datasheet: ML4411ACS
File Size: 303623 KB
Manufacturer: MICRO-LINEAR [Micro Linear Corporation]
Download : Click here to Download
About ML4411CS
PDF/DataSheet Download
Datasheet: ML4411CS
File Size: 303623 KB
Manufacturer: MICRO-LINEAR [Micro Linear Corporation]
Download : Click here to Download
ML4411 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.
The ML4411 controls motor current with either a constant off-time PWM or linear current control driven by the microcontroller. Braking and Power Fail are also included in the ML4411.
The timing of the start-up sequencing is determined by the micro, allowing the system to be optimized for a wide range of motors and inertial loads.
The ML4411 modulates the gates of external N-Channel power MOSFETs to regulate the motor current. The IC drives P-Channel MOSFETs directly.
ML4411 Maximum Ratings
Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
Supply Voltage (pins 4, 25) ........................................ 14V
Output Current (pins 2, 3, 5, 9,10,11) .................±150mA
Logic Inputs (pins 16, 17, 18, 25) .................... 0.3 to 7V
Junction Temperature ............................................ 150°C
Storage Temperature Range ..................... 65°C to 150°C
Lead Temperature (Soldering 10 sec.) .................... 150°C
Thermal Resistance (qJA) ...................................... 60°C/W
Supply Voltage (pins 4, 25) ........................................ 14V
Output Current (pins 2, 3, 5, 9,10,11) .................±150mA
Logic Inputs (pins 16, 17, 18, 25) .................... 0.3 to 7V
Junction Temperature ............................................ 150°C
Storage Temperature Range ..................... 65°C to 150°C
Lead Temperature (Soldering 10 sec.) .................... 150°C
Thermal Resistance (qJA) ...................................... 60°C/W
ML4411 Features
`Back-EMF commutation provides maximum torque for minimum "spin-up" time for spindle motors
` Accurate, jitter-free phase locked motor speed feedback output
`Linear or PWM motor current control
`Easy microcontroller interface for optimized start-up sequencing and speed control
`Power fail detect circuit with delayed braking
`Drives external N-channel FETs and P-channel FETs
`Back-EMF comparator detects motor rotation after power fail for fast re-lock after brownout
` Accurate, jitter-free phase locked motor speed feedback output
`Linear or PWM motor current control
`Easy microcontroller interface for optimized start-up sequencing and speed control
`Power fail detect circuit with delayed braking
`Drives external N-channel FETs and P-channel FETs
`Back-EMF comparator detects motor rotation after power fail for fast re-lock after brownout
ML4411 Connection Diagram
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