Ordering number : EN8795B Monolithic Digital IC LB11964T Single-Phase Full-Wave Fan Motor Driver Overview The LB11964T 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%. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 52307 MS IM / 32207 TI PC B8-5935 No.8795-1/5 LB11964T 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) 3245B Pd max – Ta 0.5 3.0 4.9 8 2 0.65 0.125 1.1MAX (0.85) 0.25 600 500 Specified circuit board* 400 300 208 200 100 0 – 20 0 20 40 60 80 100 120 Ambient temperature, Ta – °C 0.08 1 (0.53) Allowable power dissipation, Pd max –mW 3.0 SANYO : MSOP8(150mil) No.8795-2/5 LB11964T 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 MSOP8 IN+ 1 8 VCC IN- 2 7 CT LB11964T OUT1 3 6 FG GND 4 5 OUT2 Top view Application Circuit Example *1 Cr *2 VCC FG *3 OUT1 H *4 INOUT2 IN+ CT 0.22 to 1µF 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.8795-3/5 0.22 to 1 µF Thermal protection circuit Amplifier with hysteresis Discharge pulse circuit Control Delay circuit Delay circuit Charge/discharge circuit LB11964T Block Diagram No.8795-4/5 LB11964T SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. 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Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of May, 2007. Specifications and information herein are subject to change without notice. PS No.8795-5/5