Package Code. QF : VTDFN3x3-10 Operating Ambient Temperature Range I : -40 to 105 o C Handling Code TR : Tape & Reel. Handling Code Temperature Range

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1 965A/B/C Three-Phase Sensor-Less Fan Motor Driver Features General Description Three-Phase Full-Wave Sensor-Less Drive Method Adjustable Forced Commutation Frequency (for Start-up) Built-In External PWM Speed Control Built-In Quick Start Function FG (Rotation Speed Detection) Output (for 965A) RD (Lock Detection) Output (for 965B) /FG (Rotation Speed Detection) Output (for 965C) Soft Switching Circuit (for Noise Reducing) Power Saving Function (PWM Duty Input is %) Built-In Lock Protection and Auto Restart Function Thermal Shutdown Circuit Lead Free and Green Devices Available (RoHS Compliant) Applications Motor Driver For Silent Fan Motors The 965A/B/C provides all the circuitry for sensorless speed control of three-phase brushless DC motor. The controller functions include start-up circuit, back-emf commutation control, Pulse Width Modulation (PWM) speed control, lock protection, and thermal shutdown circuit. The 965A/B/C is suitable for both game machine and CPU cooler that need silent drivers. It is available in VTDFNx- package. Pin Configuration UO VCC COM FN FR 5 Exposed Pad (GND) VTDFNX- (TOP VIEW) VO 9 WO 8 FG/ RD/ /FG 7 PWM 6 OSC = Exposed Pad (connected to the ground of power) Ordering and Marking Information 965A/B/C Assembly Material Handling Code Temperature Range Package Code Package Code QF : VTDFNx- Operating Ambient Temperature Range I : - to 5 o C Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device 965A/B/C QF : 965A 965B 965C - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and % matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-D for MSL classification at lead-free peak reflow temperature. ANPEC defines Green to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 9ppm by weight in homogeneous material and total of Br and Cl does not exceed 5ppm by weight). ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Rev. A. - Aug.,

2 965A/B/C Absolute Maximum Ratings (Note ) Symbol Parameter Rating Unit VCC Pin Supply Voltage -. to 7 V I OUT UO/VO/WO Pin Output Current to A V UO/V VO/V WO UO/VO/WO Pin Output Voltage -. to 7 V V FG/RD FG/RD Pin Output Voltage -. to 7 V I FG/RD FG/RD Pin Sink Current to ma V FR FR Pin Input Voltage -. to 7 V T J Junction Temperature - to 5 C T STG Storage Temperature -65 to 5 C T SDR Maximum Lead Soldering Temperature, Seconds 6 C Note: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics Symbol Parameter Typical Value Unit θ JA P D Thermal Resistance-Junction to Ambient (Note) VTDFNx- 9 C/W Power Dissipation, T A=5 C VTDFNx-.5 W Note : θ JA is measured with the component mounted on a 55mm x mm x.6mm glass epoxy board (two-layer) in free air. Recommended Operating Conditions Symbol Parameter Range Unit VCC Pin Supply Voltage Range.8 to 6 V V PWM PWM Pin Input Voltage Range to V T A Ambient Temperature - to 5 C I OUT UO/VO/WO Pin Average Output Current to ma Electrical Characteristics ( =5V, T A =5 C, unless otherwise specified) Symbol Parameter Test Conditions SUPPLY CURRENT 965A/B/C Min. Typ. Max. Unit I CC Operating Current Rotation Mode - 5 ma I CC Standby Supply Current PWM= - 5 µa PWM INPUT V PWMH PWM Input High Level Voltage V V PWML PWM Input Low Level Voltage - V F PWM PWM Input Frequency 5-5 khz OUTPUT DRIVERS V O Output Driver Saturation Voltage I OUT=5mA, Upper and Lower total -.. V Rev. A. - Aug.,

3 965A/B/C Electrical Characteristics (Cont.) ( =5V, T A =5 C, unless otherwise specified) Symbol Parameter Test Conditions OUTPUT DRIVERS (CONT.) 965A/B/C Min. Typ. Max. Unit V FG/RD FG/RD Pin Low Voltage I FG/RD=5mA -.. V I FGL/RDL FG/RD Pin Leak Current V FG/RD=7V - - µa V FR FR Pin Input Threshold Voltage -.5 x - V LOCK PROTECTION T ON Lock Detection On Time.85.5 sec T OFF Lock Detection Off Time sec THERMAL SHUTDOWN OTS QUICK START Over Temperature Shutdown Over Temperature Shutdown Hysteresis - - o C T QS Quick Start Enable Time - - ms Rev. A. - Aug.,

4 965A/B/C Typical Operating Characteristics VCC Supply Current vs. VCC Supply Voltage VCC Supply Current vs. VCC Supply Voltage Operation Mode Standby Mode VCC Supply Current (ma) VCC Supply Current (µa) VCC Supply Voltage(V) VCC Supply Voltage(V) Output Saturation Voltage vs. Output Current FG Pin Low Voltage vs. Sink Current Output Saturation Voltage (mv) = 5V Upper Side Lower Side FG Pin Low Voltage (V) = V = 5V 6 8 Output Current (ma) FG Pin Sink Current (ma) Maximum Power Dissipation vs. Ambient Temperature Maximum Power Dissipation (mw) Ambient Temperature ( o C) Rev. A. - Aug.,

5 965A/B/C Operating Waveforms Rotation Mode Waveform (NORMAL) Rotation Mode Waveform (PWM) CH: V UO CH: V VO CH: V WO CH: I UO, ma/div, DC Time: 5ms/div CH: V UO CH: V VO CH: V WO CH: I UO, ma/div, DC Time: 5ms/div Lock Protection Waveform (Lock) Lock Protection Waveform (Release) Lock Release CH: V UO CH: V VO CH: V WO CH: I UO, 5mA/div, DC Time: s/div CH: V UO CH: V VO CH: V WO CH: I UO, 5mA/div, DC Time: s/div Rev. A. - Aug., 5