Ordering number : ENA2077 LB11964FA Monolithic Digital IC Single-Phase Full-Wave Fan Motor Driver http://onsemi.com Overview The LB11964FA is a single-phase bipolar drive fan motor driver. Features • Single-phase full-wave drive • Built-in regeneration circuit allows the use of reverse connection prevention diodes • Built-in thermal shutdown circuit Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum output voltage VCC max 15 V Maximum output current IOUT max 0.5 A Maximum output voltage V VOUT max 15 FG pin maximum output voltage VR max 15 V FG maximum output current IR max 5 mA Allowable power dissipation Pd max 400 mW When mounted on a circuit board * Operating temperature range Topr -30 to +85 °C Storage temperature range Tstg -55 to +150 °C * Specified circuit board : 20.0 × 10.0 × 0.8mm3, paper phenol, wiring density: 20%. Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 70412 SY 20120417-S00002 No.A2077-1/5 LB11964FA Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 3.5 to 13.8 V Hall sensor input common-mode VICM 0.2 to VCC – 1.5 V input voltage range Electrical Characteristics Unless otherwise specified Ta = 25°C, VCC = 5V Parameter Symbol Ratings Conditions min Circuit current ICC Unit typ max Drive mode (CT = L) 9.0 14 mA Lock protection mode (CT = H) 3.0 5.0 mA ICT1 VCT = 0.2V 1.1 1.8 2.6 μA Capacitor discharge current ICT2 VCT = 3.2V 0.15 0.25 0.40 μA Capacitor charge/discharge RCT 5.0 7.0 9.0 - Lock detection capacitor charge current current ratio RCD = ICT1/ICT2 CT charge current VC1 2.6 2.9 3.2 V CT discharge current VC2 1.5 1.8 2.1 V 0.2 0.3 3.9 4.1 Output low-level voltage VOL IO = 200mA Output high-level voltage VOH IO = 200mA Hall sensor input sensitivity VHN Zero peak value (including offset and V V 7 15 mV 0.1 0.3 V 30 μA 210 °C hysteresis) FG output pin low-level voltage VRD IRD = 5mA FG output pin leakage current IRDL VRD = 7V Thermal shutdown operating TSD Design target value* 150 180 temperature * The design specification items are design guarantees and are not measured. Package Dimensions unit : mm (typ) 3427 3.0 8 1 2 0.65 0.18 0.08 1.1 MAX 0.33 Allowable power dissipation, Pd max –mW 0.55 4.9 3.0 500 Pd max -- Ta Mounted on specified board:20mm × 10mm × 0.8mm3 paper phenol board. 400 300 208 200 100 0 -30 -10 10 30 50 70 90 110 Ambient temperature, Ta – °C SANYO : Micro8 No.A2077-2/5 LB11964FA Truth Table *1: *2: IN+ IN- CT OUT1 OUT2 FG High Low Low Low High Off Low High Low High Low Low - - High Off Off Off Mode When the motor is turning (*1) During lock protection operation (*2) During thermal protection circuit operation Off Off An FG signal at a frequency corresponding to the phase switching operation is output. This IC is pin compatible with the LB11963T, which provides a built-in function for dividing the FG output frequency by 2 to handle 8-pole motors. In restart mode (output on) when a rotor constrained state was detected, the FG output operates in the same way as during normal operation, and differs depending on the rotor position. Pin Assignment IN+ 1 IN- 2 8 VCC 7 CT LB11964FA OUT1 3 6 FG GND 4 5 OUT2 (Top view) Application Circuit Example *1 CR *2 VCC FG H *4 *3 OUT1 INOUT2 IN+ CT GND Circuit board mounted components *1: The diode Di prevents destruction of the IC if the power supply is connected with reverse polarity. Since this IC includes a regeneration circuit, this IC recovers the coil current in the low side pnp output transistors and suppresses kickback, even when the diode Di is used. This diode may be omitted if there is no chance of reverse connection problems occurring, for example, if a power supply connector is used. *2: This capacitor is required for rectification if power supply PWM is used for speed control. *3: This pin must be left open if unused. *4: Although chattering prevention measures, such as adopting a non-interfering pin assignment and providing hysteresis in the Hall sensor amplifier, these lines must be made as short as possible to make the circuit more resistant to noise. No.A2077-3/5 0.22 to 1μF Thermal protection circuit Amplifier width hysteresis Discharge pulse Control circuit Delay circuit Delay circuit Charge/Discharge circuit LB11964FA Block Diagram No.A2077-4/5 LB11964FA ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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