Ordering number : ENA2037A Monolithic Digital IC LB1909MC Stepping Motor Driver IC Overview The LB1909MC is a 2-channel low saturation voltage forward/reverse motor driver that can operate on a wide supply voltage range (2.5V to 16V). The IC is ideal for use in 2-phase excitation drive of general-purpose 2-phase bipolar stepping motors including dampers for refrigerators. Features • Wide supply voltage range : 2.5V to 16V • Low saturation voltage : VO(sat) = 0.25V typ at IO = 200mA. • Built-in shoot-through current protection circuit. • No standby current consumption (or zero). • Built-in thermal shutdown circuit. • Small package : SOIC10 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum power source voltage Symbol Conditions Ratings Unit VCC max -0.3 to +20 V Applied output voltage VOUT max -0.3 to +20 V Applied input voltage VIN max -0.3 to +18 GND pin outflow current IGND Mounted on the specified board * V 800 mA 820 mW Allowable power consumption Pd max Operating temperature Topr -30 to +85 °C Storage temperature Tstg -40 to +150 °C * Specified board: 114.3mm × 76.1mm × 1.6mm, 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. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. 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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. 32812 SY 2012322-S00003/31512 SY No.A2037-1/4 LB1909MC Allowable Operating Range at Ta = 25°C Parameter Symbol Supply voltage VCC Input high level voltage VIH Input low level voltage VIL Conditions Ratings Unit 2.5 to 16 V 1.8 to 10 V -0.3 to +0.7 V Pins ENA, IN1, IN2 Electrical Characteristics at Ta = 25°C, VCC = 12V Ratings Parameter Symbol Conditions Unit min Power source current Output saturation voltage Input current typ max ICC0 ENA = L 0.1 10 μA ICC1 ENA = H 25 35 mA VOUT1 IOUT = 200mA 0.25 0.35 V VOUT2 IOUT = 400mA 0.50 0.75 V IIN VIN = 5V 120 160 μA Ttsd Design guarantee *2 180 °C 60 °C Thermal protection block *1 Thermal shutdown operation temperature ΔTtsd Temperature hysteresis width Spark killer diode Reverse current IS(leak) orward voltage VSF IOUT = 400mA 30 μA 1.7 V *1 The thermal protection function is a feature to prevent the product from smoking and firing under unusual conditions. It is not intended to guarantee operation of the product under an ambient temperature exceeding the operating temperature range. *2 Design guarantee is not tested in individual units. Package Dimensions unit : mm (typ) 3426 5.0 1.75 MAX 0.15 Allowable power dissipation, Pd max -- W 5 0.35 1.5 1.0 Specified board : 114.3×76.1×1.6mm3 glass epoxy board 0.82 0.8 0.6 0.42 0.4 0.2 0 -30 0 30 60 90 120 Ambient temperature, Ta -- C 0.175 1 0.835 0.37 6.4 6 4.4 10 Pd max -- Ta 1.0 SANYO : SOIC10 No.A2037-2/4 LB1909MC Pin Assignment VCC 1 IN1 3 IN2 4 LB1909MC ENA 2 10 OUT1 NC 5 9 OUT2 8 OUT3 7 OUT4 6 GND Top view Truth table Input Output ENA IN1 IN2 OUT1 OUT2 OUT3 OUT4 L × × OFF OFF OFF OFF L H L H L H H Remarks Standby mode Forward Channel 1 L H L H L H Reverse Forward Channel 2 Reverse Block Diagram 30kΩ 100kΩ 35kΩ IN1 3 Control block circuit ENA 2 Thermal shutdown circuit VCC 1 10 9 OUT1 Motor OUT2 100kΩ 35kΩ IN1 4 8 7 100kΩ 6 OUT3 OUT4 GND No.A2037-3/4 LB1909MC Timing Chart (2 phase excitation drive) ENA IN1 IN2 Forward Channel 1 output Reverse Forward Reverse Forward Standby Channel 2 output Standby Reverse Forward Reverse Forward Reverse 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. 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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 March, 2012. Specifications and information herein are subject to change without notice. PS No.A2037-4/4