ML4425CSX_NL, ML4425ISX, ML4426 Selling Leads, Datasheet
MFG:FAIRCHILD Package Cooled:SOP STOCK D/C:2009+
ML4425CSX_NL, ML4425ISX, ML4426 Datasheet download
Part Number: ML4425CSX_NL
MFG: FAIRCHILD
Package Cooled: SOP STOCK
D/C: 2009+
ML4425CSX_NL, ML4425ISX, ML4426
- Table of contents:
Info of ML4425CSX_NL
Info of ML4425ISX
Info of ML4426
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About ML40123N
PDF/DataSheet Download
Datasheet: ML40123N
File Size: 108913 KB
Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]
Download : Click here to Download
About ML40123N
PDF/DataSheet Download
Datasheet: ML40123N
File Size: 108913 KB
Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]
Download : Click here to Download
About ML4426
PDF/DataSheet Download
Datasheet: ML4426
File Size: 361711 KB
Manufacturer: MICRO-LINEAR [Micro Linear Corporation]
Download : Click here to Download
ML4426 General Description
The ML4426 PWM motor controller provides all of the functions necessary for starting and controlling the speed of delta or wye wound Brushless DC (BLDC) motors without Hall Effect sensors. Back EMF voltage is sensed from the motor windings to determine the proper commutation phase sequence using a PLL. This patented sensing technique will commutate a wide range of 3- Phase BLDC motors and is insensitive to PWM noise and motor snubbing circuitry.
The ML4426 limits the motor current using a constant offtime PWM control loop. The velocity loop is controlled with an onboard amplifier. The ML4426 has circuitry to ensure that there is no shoot-through in directly driven external power MOSFETs.
The timing of the start-up sequence is determined by the selection of three timing capacitors. This allows optimization for a wide range of motors and loads.
ML4426 Maximum Ratings
Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute ximum ratings are stress ratings only and functional device operation is not implied.
VDD .......................................................................... 14V
Logic Inputs (BRAKE, F/R) ...................... GND - 0.3 to 7V
All Other Inputs and Outputs .. GND -0.3V to VDD + 0.3V
Output Current (LA, LB, LC, HA, HB, HC) ............ ±50mA
Junction Temperature .............................................. 150ºC
Storage Temperature Range ...................... 65ºC to 150ºC
Lead Temperature (Soldering 10 sec.) ..................... 260ºC
Thermal Resistance (qJA)
28-Pin Narrow PDIP ......................................... 48ºC/W
28-Pin SOIC ..................................................... 75ºC/W
32-Pin TQFP ..................................................... 80ºC/W
ML4426 Features
`Motor starts and stops with power to IC
`Bi-directional motor drive for applications requiring forward/ everse operation
`On-board start sequence: Align ® Ramp ® Set Speed
`Patented Back-EMF commutation technique provides jitterlesstorque for minimum "spin-up" time
`Onboard speed control loop
`PLL used for commutation provides noise immunity fromPWM spikes, compared to noise sensitive zero crossingtechnique
`PWM control for maximum efficiency
`Direct FET drive for 12V motors; drives high voltage motorswith IC buffers from IR, IXYS, Harris, Power Integrations,Siliconix, etc.
`Bi-directional motor drive for applications requiring forward/ everse operation
`On-board start sequence: Align ® Ramp ® Set Speed
`Patented Back-EMF commutation technique provides jitterlesstorque for minimum "spin-up" time
`Onboard speed control loop
`PLL used for commutation provides noise immunity fromPWM spikes, compared to noise sensitive zero crossingtechnique
`PWM control for maximum efficiency
`Direct FET drive for 12V motors; drives high voltage motorswith IC buffers from IR, IXYS, Harris, Power Integrations,Siliconix, etc.
ML4426 Connection Diagram
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