Ordering number : ENA2016 LB1846MC Monolithic Digital IC Low-Voltage/Low Saturation Voltage Type Bidirectional Motor Driver http://onsemi.com Overview The LB1846MC is 2-channel low-voltage, low saturation voltage type bidirectional motor driver IC that is optimal for use as 2-phase stepping motor drivers in printers, cameras and other portable equipment. The output circuits are of the bipolar type, with PNP transistors in the upper side and NPN transistors in the lower side, and they achieve low saturation output and low power characteristics despite being provided in a miniature package. The LB1846MC products can directly control a motor from signals from a microcontroller. The LB1846MC is optimal for 1-2 phase excitation drive for 2-phase stepping motors using 4-input logic (IN1, IN2, IN3 and IN4). Another point is that these IC include built-in thermal shutdown circuits so that IC scorching or burning is prevented in advance even if the IC output is shorted. Functions • Optimal for 1-2 phase excitation drive for 2-phase stepping motors • Standby current: Zero • Low saturation voltage. VO (sat) = 0.55V typical at IO = 400mA • Thermal shutdown circuit • No limitations on the magnitude relationship between the power supply voltage (VCC) and the input voltage (VIN) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit VCC max -0.3 to +8.0 V Output voltage VOUT VCC + VSF V Input voltage VIN -0.3 to +8.0 Ground pin outflow current IGND Per channel Allowable power dissipation Pd max When mounted* Operating temperature Topr -20 to +75 °C Storage temperature Tstg -40 to +150 °C V 800 mA 870 mW *1: When mounted on the specified printed circuit board (114.3mm × 76.2mm × 1.5mm), glass epoxy board 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 June, 2013 30712 SY 20120112-S00002 No.A2016-1/4 LB1846MC Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.5 to 7.5 Input high-level voltage VIH 2.5 to 7.5 V V Input low-level voltage VIL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = 5V Parameter Symbol Current drain Output saturation voltage Input current Ratings Conditions min typ Unit max ICC0 IN1, 2, 3, 4 = 0V 0.1 10 µA ICC1 IN1, 3 = 3V, IN2, 4 = 0V 30 40 mA VOUT1 VIN = 3V or 0V, VCC = 3 to 7.5V, IOUT = 200mA 0.27 0.4 V VOUT2 VIN = 3V or 0V, VCC = 4 to 7.5V, IOUT = 400mA 0.55 0.8 V IIN VIN = 5V 150 200 µA 30 µA 1.7 V Spark Killer Diode Reverse current IS (leak) Forward voltage VSF IOUT = 400mA Package Dimensions unit : mm (typ) 3420 5.0 Allowable power dissipation, Pdmax - mW 0.5 4.4 6.2 10 1 2 1.0 0.15 0.35 0.05 (1.5) 1.55 0.8 MAX Pd max -- Ta 1000 870 800 600 522 400 200 0 --20 0 SANYO : MFP10SK(225mil) 20 40 60 80 100 Ambient temperature, Ta - C Pin Assignment VCC 1 10 OUT4 IN4 2 9 OUT3 IN3 3 8 OUT1 IN1 4 7 OUT2 IN2 5 6 GND LB1846MC Top view No.A2016-2/4 LB1846MC Block Diagram VCC IN1 OUT1 Stepping Motor OUT2 IN3 Thermal shutdown circuit Control block IN2 IN4 OUT3 OUT4 GND Truth Tables IN1 IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 Note L L L L OFF OFF OFF OFF Standby H L L L H L OFF OFF L H L H L H L H L L H L OFF OFF H L L H H L L H H L L H L L L H OFF OFF L H L H L H L H L L L H OFF OFF L H H L L H H L L H H H - - - - H H 1-2 phase excitation The logic output for the first high-level input is produced. *2 Note: *1 "-" indicates a "don‛t care" input. *2 If two high levels (H/H) are input to the IN1/IN2 pins with the timing shown in (1) in the figure below, then the IN2 input that arrived later will be ignored and the IC will function as though an H/L combination is applied to the IN1/IN2 pins. Similarly, the timing shown in (2) results in a L/H combination on the IN1/IN2 pins. (1) (2) IN1(IN3) L H H IN1(IN3) L L H IN2(IN4) L L H IN2(IN4) L H H No.A2016-3/4 LB1846MC ICC - VCC Characterstics 50 IIN -- VIN 280 VCC=5V VCC=VIN, IN1 / 2 / 3 / 4=H / L / H / L 240 Input current, IIN - μA Current drain, ICC - mA 40 30 20 200 160 120 80 10 40 0 0 0 1 2 3 4 5 6 7 8 9 Power-supply voltage, VCC - V 1 2 3 4 5 6 7 8 9 Input voltage, VIN - V VOUT -- IOUT 1.0 Output saturation voltage, VOUT - V 0 VCC=VIN=4.0V 0.8 0.6 0.4 0.2 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Input current, IOUT - A 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. 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