LB1838MEVB

Ordering number : EN3949E LB1838M Monolithic Digital IC Low-Voltage, Low-Saturation http://onsemi.com Bidirectional Motor Driver Overview The LB1838M is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications. The LB1838M is a bipolar stepper-motor driver IC that is ideal for use in printers, cameras and other portable devices. Functions • Low voltage operation (2.5V min) • Low saturation voltage (upper transistor + lower transistor residual voltage: 0.40V at 400mA) • Built-in through-current prevention circuit • Separate logic power supply and motor power supply • Built-in spark killer diodes • Built-in thermal shutdown circuit • Compact package: MFP14S Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max -0.3 to +10.5 V VS max -0.3 to +10.5 V Output applied voltage VOUT VS+VSF V Input applied voltage VIN Ground pin flow-out current IGND Allowable power dissipation Pd max -0.3 to +10 V Per channel 1.0 A Independent IC 550 mW Mounted on a specified board * 800 mW Operating temperature Topr -20 to +75 °C Storage temperature Tstg -40 to +125 °C * Specified board: 20mm × 30mm × 1.6mm, glass epoxy board. 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 21209 MS/82599TH(II)/21097HA(II)/O1596HA(II)/4302TS(US) No.3949-1/5 LB1838M Allowable Operating Ranges at Ta = 25°C Parameter Symbol Supply voltage Conditions Ratings Unit VCC 2.5 to 9.0 VV VS 1.8 to 9.0 V Input high-level voltage VIH 1.8 to 9.0 V Input Low-level voltage VIL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = 3V Parameter Symbol Ratings Conditions min Unit typ max ICC0 ENA1,2 = 0V, VIN1 = 3V or 0V 0.1 10 μA ICC1 ENA1 = 3V, VIN1 = 3V or 0V 12 18 mA VOUT1 ENA = 3V, VIN = 3V or 0V, IOUT = 200mA 0.2 0.28 VOUT2 ENA = 3V, VIN = 3V or 0V, IOUT = 400mA 0.4 0.6 V IIN VCC = 6V, VIN = 6V 200 μA IENA VCC = 6V, ENA = 6V 200 μA VO(SUS) IOUT = 400mA Reverse current IS(leak) VCC1, VS = 7V 30 μA Forward voltage VSF IOUT = 400mA 1.7 V Current drain Output saturation voltage Input current Output sustaining voltage 9 V V Spark killer diode Package Dimensions unit : mm (typ) 3111A Pd max -- Ta Allowable power dissipation, Pd max -- mW 1000 8.0 14 0.63 4.4 6.4 8 1 1.7MAX 1.0 0.35 0.15 0.1 (1.5) (1.0) 7 SANYO : MFP14S(225mil) 800 600 550 Specified board: 20×30×1.5mm3 glass epoxy board. With specified board Independent IC 480 400 330 200 0 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C Pin Assignment GND ENA2 OUT3 VS2 14 13 12 11 OUT4 IN2 10 9 Vcont 8 LB1838M 1 2 3 4 5 VCC ENA1 OUT1 VS1 OUT2 6 7 IN1 GND Note: Both GND pins should be connected to ground. No.3949-2/5 LB1838M Block Diagram 10μF IN1 60kΩ 80kΩ ENA1 VS2 Control block VCC VS1 OUT1 Stepping Motor OUT2 60kΩ 80kΩ IN2 Control block Thermal shutdown 60kΩ 80kΩ ENA2 OUT3 OUT4 60kΩ 80kΩ GND GND Vcont Note: As long as the voltages applied to VCC, VS1, VS2, ENA1, ENA2, IN1, and IN2 are within the limits set by the absolute maximum ratings, there are no restrictions on the relationship of each voltage level in comparison with the others (regarding which is higher or lower). (ex. VCC = 3V, VS1, 2 = 2V, ENA = IN = 5V) Truth Table IN1,2 ENA1,2 OUT1,3 OUT2,4 Mode L H H L Forward H H L H Reverse L L OFF OFF Standby H L OFF OFF Standby Vcont pin VCC VS As shown in the left diagram, the Vcont pin outputs the voltage of the band gap Zener VZ +VF (= 1.93V). In normal use, this pin is left open. The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a bridge. OUT IN 300Ω M ID OUT VZ ID = VZ ( = Constant) r Vcont No.3949-3/5 LB1838M VO(sat) -- IO 1.0 IIN -- VIN 200 0.8 0.6 0.4 0.2 0 A EN ) V =3 A EN 160 Input current, IIN -- μA Output saturation voltage, VO(sat) -- V VCC = VS = 3V 1( 120 IN 80 40 0 100 200 300 400 500 0 600 0 1 2 3 VO(sat) -- Ta 5 6 7 8 9 10 11 12 IS -- VS 20 VCC = VS = IN = 3V VO(sat) = total VCC = VIN = 3V For 1channel 0.5 16 A 00m IO= 4 0.4 Current drain, IS -- mA Output saturation voltage, VO(sat) -- V 0.6 4 Input voltage, VIN -- V Output current, IO -- mA 0.3 A I O = 200m 0.2 12 8 4 0.1 0 -40 -20 0 20 40 60 80 100 120 140 Ambient temperature, Ta -- °C 1 2 3 4 5 6 7 8 9 10 Supply voltage, VS -- V ICC -- VCC 10 00 VCC = VIN = 3V For 1channel Current drain, ICC -- mA 8 6 erse Rev Forward 4 2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Supply voltage, VCC -- V No.3949-4/5 LB1838M 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. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. 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SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.3949-5/5