Product details

Rating Catalog Vs (min) (V) 10 Features Brushless DC Motor Control, Current-Limited, Diff Curr Sense Amp, Switching Control, Tachometer Operating temperature range (°C) -40 to 85
Rating Catalog Vs (min) (V) 10 Features Brushless DC Motor Control, Current-Limited, Diff Curr Sense Amp, Switching Control, Tachometer Operating temperature range (°C) -40 to 85
SOIC (DW) 28 184.37 mm² 17.9 x 10.3
  • Drives Power MOSFETs or Power Darlingtons Directly
  • 50-V Open Collector High-Side Drivers
  • Latched Soft Start
  • High-Speed Current-Sense Amplifier with Ideal Diode
  • Pulse-by-Pulse and Average Current Sensing
  • Over-Voltage and Under-Voltage Protection
  • Direction Latch for Safe Direction Reversal
  • Tachometer
  • Trimmed Reference Sources 30 mA
  • Programmable Cross-Conduction Protection
  • Two-Quadrant and Four-Quadrant Operation

  • Drives Power MOSFETs or Power Darlingtons Directly
  • 50-V Open Collector High-Side Drivers
  • Latched Soft Start
  • High-Speed Current-Sense Amplifier with Ideal Diode
  • Pulse-by-Pulse and Average Current Sensing
  • Over-Voltage and Under-Voltage Protection
  • Direction Latch for Safe Direction Reversal
  • Tachometer
  • Trimmed Reference Sources 30 mA
  • Programmable Cross-Conduction Protection
  • Two-Quadrant and Four-Quadrant Operation

The UC3625 family of motorcontroller devices integrate most of the functions required for high-performance brushless dc-motor control into one package. When coupled with external power MOSFETs or Darlingtons, these devices perform fixed-frequency PWM motor control in either voltage or current mode while implementing closed-loop speed control and braking with smart noise rejection, safe direction reversal, and cross–conduction protection.

Although specified for operation from power supplies between 10 V and 18 V, the UC1625 controls higher voltage power devices with external level-shifting components. The UC1625 contains fast, high-current push-pull drivers for low-side power devices and 50-V open-collector outputs for high-side power devices or level-shifting circuitry.

The UC1625 is characterized for operation over the military temperature range of –55°C to +125°C, while the UC2625 is characterized from –40°C to +105°C and the UC3625 is characterized from 0°C to +70°C. (Note: ESD Protection to 2 kV)

The UC3625 family of motorcontroller devices integrate most of the functions required for high-performance brushless dc-motor control into one package. When coupled with external power MOSFETs or Darlingtons, these devices perform fixed-frequency PWM motor control in either voltage or current mode while implementing closed-loop speed control and braking with smart noise rejection, safe direction reversal, and cross–conduction protection.

Although specified for operation from power supplies between 10 V and 18 V, the UC1625 controls higher voltage power devices with external level-shifting components. The UC1625 contains fast, high-current push-pull drivers for low-side power devices and 50-V open-collector outputs for high-side power devices or level-shifting circuitry.

The UC1625 is characterized for operation over the military temperature range of –55°C to +125°C, while the UC2625 is characterized from –40°C to +105°C and the UC3625 is characterized from 0°C to +70°C. (Note: ESD Protection to 2 kV)

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Technical documentation

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* Data sheet UCX625 Brushless DC Motor Controller datasheet (Rev. C) 22 May 2013
Application note DN-50 Simple Techniques for Isolating and Correcting Common Application Problems 05 Sep 1999
Application note U-115 New Integrated Circuit Produces Robust, Noise Immune System for Brushless 05 Sep 1999
Application note U-120 A Simplified Approach to DC Motor Modeling for Dynamic Stability Analysis 05 Sep 1999

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