Ordering number : EN2575E Monolithic Digital IC LB1641 Bidirectional Motor Driver Overview The LB1641 is a bidirectional motor driver IC. Since it has a 2-input logic circuit and performs the functions of bidirectional driving and braking, it is capable of direct driving 6V, 9V, 12V motors. The output voltage can be varied by using an external zener diode. Features • 2-input logic can be used to exercise control of bidirectional driving and braking. • On-chip elements to absorb dash current of motor. • Input interfaceable to MOS LSI. • Output voltage variable by use of external zener diode. Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage VCC max Input voltage VIN Output circuit IOUT Allowable power dissipation Pd max Operating temperature Storage temperature Conditions Ratings Unit 18 V -0.3 to VCC V ±1.6 A 1.2 W Topr -25 to +75 °C Tstg -55 to +125 °C Recommended Operating Ranges at Ta = 25°C Parameter Supply voltage Symbol Conditions Ratings Unit VCC1 7 to 18 V VCC2 5 to 18 V 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 (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). 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D2408 MS/73098HA (KT)/N3093TS/6247KI, TS No.2575-1/5 LB1641 Electrical Characteristics at Ta = 25°C, VCC = 12V Parameter Symbol Ratings Conditions min Input threshold voltage Vth RL = ∞ Minimum input on-state current IIN RL = ∞ Output voltage VO RL = 60Ω, VZ = 7.4V Output leakage current IOL Pins 5,6 GND, RL = ∞ Unit typ 1.1 6.6 max 1.3 1.5 V 10 15 µA 7.2 7.4 V 0.01 1.0 mA Current drain ICC Pins 5,6 GND, RL = ∞ 6 10 mA Saturation voltage (upper) Vsat1 IOUT = 300mA 1.9 2.2 V Vsat1’ IOUT = 500mA 1.9 2.3 V Vsat2 IOUT = 300mA 0.25 0.5 V Vsat2’ IOUT = 500mA 0.4 0.65 V Saturation voltage (lower) 3 Package Dimensions unit : mm (typ) 3043C Pd max -- Ta Allowable power dissipation, Pd max -- W 1.4 3.25 1 4.9 1.1 (6.5) 7.7MAX 24.0 10 (0.62) 1.2 2.54 0.5 0.25 1.5 1.2 1.0 0.8 0.6 0.4 0.2 0 -25 SANYO : SIP10 0 25 50 75 100 Ambient temperature, Ta -- °C Pin Assignment LB1641 2 1 GND OUT1 3 P1 4 VZ 5 IN1 6 IN2 7 8 VCC1 VCC2 9 P2 10 Top view OUT2 Truth Table Input IN1 Output IN2 IN3 Operation IN4 0 0 0 0 Braking 1 0 1 0 Forward (reverse) drive 0 1 0 1 Reverse (forward) drive 1 1 0 0 Braking Input level 1 : 2.0V or greater 0 : 0.7V or less No.2757-2/5 LB1641 Block Diagram OUT1 VCC2 OUT2 8 2 10 P2 9 VCC1 7 Predriver P1 3 IN1 5 4 VZ 6 IN2 Input logic circuit GND 1 Test Circuit 0.01µF RL SW A 3 2 7 10 VCC1,2=12V 9 8 4 6 VZ 7.4V LB1641 5 1 A V VIN Sample Application Circuit : 6V motor circuit LB1641 3 4 5 6 7 8 9 10 10Ω 2 6.8ZD 1 IN1 IN2 VCC=12V 0.01µF M 0.1µF No.2757-3/5 LB1641 ICC -- VCC 8 Vsat1 -- IO 4.0 VCC = 12V Saturation voltage, Vsat1 -- V Current drain, ICC -- mA 7 6 5 4 3 2 3.2 2.4 1.6 0.8 1 0 0 0 4 8 12 16 20 0 24 0.4 ICC -- Ta 8 0.8 1.2 1.6 2.0 Output current, IO --A Supply voltage, VCC -- V Vsat2 -- IO 1.6 VCC = 12V 1.4 Saturation voltage, Vsat2 -- V Current drain, ICC -- mA 7 6 5 4 3 2 1.2 1.0 0.8 0.6 0.4 0.2 1 0 -40 0 0 40 80 120 160 Ambient temperature, Ta -- °C 0.4 0.8 1.2 1.6 2.0 Output current, IO --A VO -- VZ 18 0 VCC = 18V IOUT = 0.3V 16 Output voltage, VO -- V 14 12 10 8 6 4 2 0 0 4 8 12 16 20 Zener voltage, VZ -- V No.2757-4/5 LB1641 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. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. 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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 December, 2008. Specifications and information herein are subject to change without notice. PS No.2575-5/5