Ordering number : ENA3948B LB1837M Monolithic Linear IC Low-voltage/Low-saturation Bidirectional Constant-Voltage Regulated Motor Driver http://onsemi.com Overview The LB1837M is a low-voltage, low-saturation, two-channel motor driver with a bidirectional braking function that provides constant-voltage regulated output for bidirectional operation. The design of the LB1837M is ideal for video equipment, cameras, and other portable equipment. Function • Wide operating voltage range (3.0 to 9.0 V). • Low saturation voltage VO (sat) = 0.40 V at IO = 200 mA. • Consumes almost no current in standby mode (0.1 μA or less). • Permits setting of bidirectional constant-voltage regulated value. • Built-in reference voltage coupled to input. • Brake function built in. • Compact MFP14S package. MFP14S(225mil) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Output current Applied input voltage Allowable power dissipation Symbol Conditions Ratings Unit VCC max 10.5 V Im max 250 mA VIN Pd max –0.3 to +10 With board ( 30 x 30 x 1.5 mm3 ) V 800 mW Operating temperature Topr –20 to +80 °C Storage temperature Tstg –40 to +12 °C 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. Allowable Operating Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 3.0 to 9.0 Input [H] voltage VIH 3.0 to 9.0 V Input [L] voltage VIL –0.3 to +0.7 V Control voltage VC 0.2 to 6.0 V Semiconductor Components Industries, LLC, 2013 November, 2013 V 61295HA(II) No.3948-1/6 LB1837M Electrical Characteristics at Ta = 25°C, VCC = 6V Parameter Symbol Supply current ICC0 During standby ICC1 Reference voltage Unit max 0.1 10 μA 2 3 mA 3 5 mA 6.5 9 mA ICC3 IO = 100 mA (upper side + lower side) 0.3 0.4 Vsat2 IO = 200 mA (upper side + lower side) 0.4 0.55 V Vsat3 IO = 200 mA (lower side) 0.07 0.10 0.15 V Ivref = 1 mA 1.85 2.0 2.15 ΔVO ΔVCC ΔVO ΔICC IIN Output voltage typ Vsat1 Vref Output voltage voltage characteristics Output voltage current characteristics Input current Ratings min (For one channel) During bidirectional operation during control, load open (For one channel) During bidirectional operation during saturation, load open During braking (for one channel) ICC2 Output saturation voltage Conditions VO VO = 5 V, VCC = 5.5 to 9 V, IO = 100 mA VO = 5 V, VCC = 6 V, IO = 10 to 100 mA VIN = 5 V Between OUT and GND 90 2.5 x VC V V 20 mV 50 mV 150 2.7 x VC μA V Package Dimensions unit:mm SOIC14 W / MFP14S (225 mil) CASE 751CB ISSUE A (Unit: mm) 1.10 SOLDERING FOOTPRINT* 5.70 GENERIC MARKING DIAGRAM* 1.00 0.47 NOTE: The measurements are not to guarantee but for reference only. XXXXXXXXXX YMDDD XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. No.3948-2/6 LB1837M Equivalent Circuit Block Diagram (For one channel) Truth Table Input Output Mode IN 1/3 IN 2/4 Out 1/3 Out 2/4 L L OFF OFF H L H L L H L H H H L L Standby Constant-voltage regulated forward operation Constant-voltage regulated reverse operation Brake The constant-voltage regulated output VO (= voltage between H side output and GND) is controlled by 2.5 x VC. The output is in the saturated state when the VC input range is 0.2 to 6 V and VO ≥ VCC. Pin Assignment No.3948-3/6 LB1837M Pin Functions Pin No. Symbol Equivalent Circuit Diagram Pin Function 14 VCC Power supply pin for output and controller. 9 GND GND pins for output and controller. Both must be grounded. 1 IN2 2 IN1 6 IN3 7 IN4 Input pins that determine the excitation of the outputs. IN1 and IN2 control outputs OUT1 and OUT2; IN3 and IN4 control outputs OUT3 and OUT4. When inputs IN1 through IN4 are all low or open, the device goes into standby mode and current consumption drops to 10 μA or less. L: –0.3 to +0.7 V H: 3.0 to 9.0 V There are no limitations on the magnitude relationships between the VCC and VIN supply voltages. 8 OUT4 10 OUT3 11 OUT1 13 OUT2 3 Vref Reference voltage (= 2.0 V). 4 VC1 VC2 Input pins that determine the constantvoltage regulated output level. The constant-voltage regulated output VO (= voltage between H side output and GND) is controlled by VO = 2.5 x VC . There are no limitations on the magnitude relationships between the VCC, VC1 and VC2 supply voltages. 12 5 Output pins. Have built-in spark killer diodes. Braking provides short braking that turns on the lower transistor. No.3948-4/6 LB1837M Sample Application Circuit No.3948-5/6 LB1837M 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. SCILLC reserves the right to make changes without further notice to any products herein. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.3948-6/6