Ordering number : ENA0927A LB1838JM Monolithic Digital IC Low-Saturation Bidirectional Motor Driver for Low-Voltage Drive http://onsemi.com Overview The LB1838JM is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications. It has a wide operating temperature range of -40 to 80°C and is ideal for 2-phase excitation bipolar stepping motor driver IC used in automotive components (other than critical safety parts), consumer and industrial products, and many other applications. Features • Low voltage operation (2.5V min) • Low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40V typ at 400mA). • Through-current prevention circuit built in • Separate logic power supply and motor power supply • Spark killer diodes built in • Thermal shutdown circuit built in • Compact package (14-pin MFP) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Output supply voltage Input supply voltage GND pin flow-out current Allowable power dissipation Symbol Conditions Ratings Unit VCC max -0.3 to +10.5 VS max -0.3 to +10.5 V VS to VSF V VOUT VIN V -0.3 to +10 V Per channel 1.0 A Pd max1 Independent IC 550 mW Pd max2 * Mounted on a board. 800 mW IGND Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +150 °C * Mounted on a substrate : 30×30×1.5mm3, 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 31110 SY / 91207 MS PC 20070831-S00003 No.A0927-1/5 LB1838JM Allowable Operating Ranges at Ta = 25°C Parameter Symbol Supply voltage Conditions Ratings Unit VCC 2.5 to 9.0 VS 1.8 to 9.0 V 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 Supply current Output saturation voltage Unit max ICC0 EMA1, 2 = 0V, VIN1 = 3V or 0V 0.1 10 μA ICC1 EMA1 = 3V, VIN1 = 3V or 0V 12 18 mA VOUT1 EMA1 = 3V, VIN1 = 3V or 0V, IOUT = 200mA 0.20 0.28 VOUT2 EMA1 = 3V, VIN1 = 3V or 0V, IOUT = 400mA 0.40 V 0.60 V IIN VCC = 6V, VIN = 6V 200 μA IENA VCC = 6V, ENA = 6V 200 μA Input current Output sustaining voltage typ VO (SUS) IOUT = 400mA 9 V Reverse current IS (leak) VCC1, VS = 7V 30 μA Forward voltage VSF IOUT = 400mA 1.7 V Spark killer diode Package Dimensions Allowable power dissipation, Pd max – mW unit : mm (typ) 3111A 8.0 14 0.63 4.4 6.4 8 1 1.7MAX 7 1.0 0.35 0.15 0.1 (1.5) (1.0) SANYO : MFP14S(225mil) Pd max -- Ta 1000 800 600 550 Mounted on a board : 30.0×30.0×1.5mm3 glass epoxy Mounted on a board Independent IC 416 400 286 200 0 – 40 – 20 0 2025 40 60 8085 100 Ambient temperature, Ta – °C GND ENA2 OUT3 VS2 OUT4 IN2 Vcont Pin Assignment 14 13 12 11 10 9 8 2 3 4 5 6 7 OUT1 VS1 OUT2 IN1 GND VCC 1 ENA1 LB1838JM Top view Note) Ground both GND pins. No.A0927-2/5 LB1838JM Block Diagram VCC VS2 60kΩ 10μF OUT1 Control IN1 80kΩ 60kΩ ENA1 VS1 Stepping Motor OUT2 80kΩ Thermal shutdown 60kΩ IN2 OUT3 Control 80kΩ OUT4 60kΩ ENA2 80kΩ GND GND Vcont * : 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 L H H OUT2/4 L Forward Mode H H L H Reverse L L OFF OFF Standby H L OFF OFF Standby No.A0927-3/5 LB1838JM Vcont pin VCC VS OUT M 300Ω ID IN OUT VZ ID = VZ r (= constant) Vcont As shown in the above 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. VO(sat) – IO IIN – VIN 200 VCC = VS = 3V 0.6 0.4 0.2 E 1( 120 IN 80 40 0 0 100 200 300 400 500 0 0 600 2 1 3 Output current, IO – mA 4 5 6 7 8 9 10 Input voltage, VIN – V VO(sat) – Ta 0.6 IS – VS 20 VCC = VS = IN = 3V VO(sat) = total value VCC = VIN =3V For 1 channel 0.5 16 IO 0.4 Current drain, IS – mA Output saturation voltage, VO (sat) – V A EN ) V =3 A N 160 0.8 Input current, IIN – μA Output saturation voltage, VO (sat) – V 1.0 A = 400m 0.2 IO = 200mA 0.3 8 4 0.1 0 – 40 12 – 20 0 20 40 60 80 100 Ambient temperature, Ta – °C 120 140 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Supply voltage, VS – V No.A0927-4/5 LB1838JM ICC – VCC Current drain, ICC – mA 10 VCC = VIN =3V For 1 channel 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 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. 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