LB1868M 2phase Brushless Fan Motor Driver Monolithic Digital IC Overview www.onsemi.com The LB1868M is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and automatic recovery can be implemented. The IC can be configured for 12 V or 24 V operation and a wide range of variations, from Low speed to H-High speed and from 60 cm to 120 cm square using the same PCB. This makes it easy to design highly reliable fan motor installations. Features MFP14S Output Protection Zener Diode with Variable Withstand Voltage CASE 751CB Z1, Z2 Pins Open: V = 57 V (24 V Specification) OLM Z1, Z2 pins shorted: V = 32 V (12 V Specification) OLM MARKING DIAGRAM External Zener Diode Connected across Z1 V Pins: CC Support for Fans with Large Drive Current External Resistor Allows Configuration for 12 V or 24 V XXXXXXXXXX Direct Hall Element Connection Possible (Built-in Hall Amplifier YMDDD with Hysteresis Supports Core without Auxiliary Electrode) Built-in Output Transistor with 1.0 A Output Current (Strengthened Negative-current Support for Core without Auxiliary Electrode) XXXXX = Specific Device Code Built-in Rotation Detection Function: Low during Rotation and High Y = Year during Stop M = Month Built-in Lockup Protection with Automatic Recovery DDD = Additional Traceability Data ST Pin for Motor Stop/Drive (for Standby Mode of Copiers etc.) FG Output Pin for Rotation Detection PIN ASSIGNMENT BC Pin for Kickback Noise Reduction (with 2 External Capacitors) 1 14 Built-in Thermal Shutdown V IN IN RD IN+ CT FG Z2 ST BC Z1 OUT2 OUT1 GND NC 7 8 (Top View) ORDERING INFORMATION See detailed ordering and shipping information on page 6 of this data sheet. Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: March, 2018 Rev. 1 LB1868M/DLB1868M SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS (T = 25C) A Symbol Parameter Conditions Ratings Unit I max Maximum Input Current t 20 ms 200 mA CC V max Maximum Applied Output Voltage Internal V OUT I max Maximum Output Current 1.0 A OUT I max Current Flowing into RD, FG 10 mA RD V max RD, FG Applied Voltage 30 V RD V max ST Applied Voltage 7.5 V ST P max Allowable Power Dissipation Mounted on a specified board (Note 1) 800 mW d T Operating Temperature 30 to +80 C opr T Storage Temperature 55 to +150 C stg Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1Specified board: 20 mm 15 mm 1.5 mm, glass epoxy board. ALLOWABLE OPERATING RANGES (T = 25C) A Symbol Parameter Conditions Ratings Unit I Input Current Range 6.0 to 50 mA CC V Common Mode Input Voltage Range 0.2 to V 1.5 V ICM IN V H ST High Voltage 4.5 to 7.0 V ST V L ST Low Voltage 0 to 0.5 V ST Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. ELECTRICAL CHARACTERISTICS (T = 25C, I = 10 mA) A CC Symbol Parameter Conditions Min Typ Max Unit V LM1 Output Limiter Withstand Voltage Z1, Z2 open 54 57 60 V O V LM2 Z1, Z2 short 31 33 35 V O V sat1 Output Saturation Voltage I = 0.5 A 0.95 1.2 V O O V sat2 I = 1.0 A 1.15 1.5 V O O V V Voltage I = 7.0 mA 6.4 6.7 7.0 V IN IN CC V Hall Input Sensitivity (at Zero Peak) Including offset and hysteresis 20 mV HN V sat RD, FG Output Saturation Voltage I = 5 mA 0.1 0.3 V RD RD IC1 CT Drain Current C = GND 2.7 3.8 4.9 A IC2 CT Discharge Current C = V 0.19 0.30 0.41 A IN V 1 Comp Input Threshold Voltage 0.77 0.8V 0.83 V TH IN V 2 0.42 0.45V 0.48 V TH IN I ST Input Current V = 5 V 80 120 A ST ST TSD Thermal Protection Operating Design target value (Note 2) 180 C Temperature Thermal Protection Circuit Hysteresis Design target value (Note 2) 40 C TSD Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 2