LB1838M

LB1838M ONSEMI | Alldatasheet

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21209 MS/82599TH(II)/21097HA(II)/O1596HA(II)/4302TS(US) No.3949-1/5 http://onsemi.com Semiconductor Components Industries, LLC, 2013 June, 2013 LB1838M 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 VCC max -0.3 to +10.5 V Maximum supply voltage VS max -0.3 to +10.5 V Output applied voltage V OUT VS+VSF V Input applied voltage V IN -0.3 to +10 V Ground pin flow-out current I GND Per channel 1.0 A Independent IC 550 mW Allowable power dissipation Pd max 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. Monolithic Digital IC Low-Voltage, Low-Saturation Bidirectional Motor Driver Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Oper ating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

No.3949-2/5 Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit VCC 2.5 to 9.0 VV Supply voltage VS 1.8 to 9.0 V Input high-level voltage V IH 1.8 to 9.0 V Input Low-level voltage V IL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = 3V Ratings Parameter Symbol Conditions min typ max Unit ICC0 ENA1,2 = 0V, V IN1 = 3V or 0V 0.1 10 μA Current drain ICC1 ENA1 = 3V, V IN1 = 3V or 0V 12 18 mA VOUT1 ENA = 3V, V IN = 3V or 0V, IOUT = 200mA 0.2 0.28 V Output saturation voltage VOUT2 ENA = 3V, V IN = 3V or 0V, IOUT = 400mA 0.4 0.6 V IIN V CC = 6V, VIN = 6V 200 μA Input current IENA V CC = 6V, ENA = 6V 200 μA Output sustaining voltage V O(SUS) I OUT = 400mA 9 V Spark killer diode Reverse current I S(leak) V CC1, VS = 7V 30 μA Forward voltage V SF I OUT = 400mA 1.7 V Package Dimensions unit : mm (typ) 3111A Pin Assignment VCC ENA1 OUT1 VS1 OUT2 IN1 GND Vcont 14 13 12 11 10 9 GND ENA2 OUT3 V S2 OUT4 IN2 LB1838M Note: Both GND pins should be connected to ground. SANYO : MFP14S(225mil) 8.0 0.15 (1.0) 1.0 0.35 1.7MAX (1.5)0.1 4.4 0.63 6.4 -20 0 20 40 60 80 1000 1000 800 600 400 200 Pd max -- Ta 550 330 480 Ambient temperature, Ta -- °C Allowable power dissipation, Pd max -- mW Independent IC With specified board Specified board: 20×30×1.5mm3 glass epoxy board.

No.3949-3/5 Vcont IN OUT OUT M ID VZ VCC VS ID = VZ r 300Ω ( = Constant) Block Diagram VCC OUT3 VS1 OUT4 GND Vcont GND ENA2 VS2 IN2 60kΩ 80kΩ 60kΩ 80kΩ OUT1 OUT2 ENA1 IN1 60kΩ 80kΩ 60kΩ 80kΩ Stepping Motor 10μF Control blockControl block Thermal shutdown 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 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.

No.3949-4/5 VO(sat) -- IO IIN -- VIN VO(sat) -- Ta I S -- VS ICC -- VCC 1.0 0.8 0.6 0.4 0.2 200 160 120 0.6 0.5 0.3 0.2 0.1 0.4 0 100 200 300 400 500 600 0123456789 1 0 -40 -20 0 20 40 60 140 12010080 0123 7 6548 1 2 11109 0123 7 6548 1 2 11109 ENA IN1(ENA = 3V) IO = 400mA IO = 200mA VCC = VS = 3V VCC = VS = IN = 3V VO(sat) = total VCC = VIN = 3V For 1channel VCC = VIN = 3V For 1channel Output current, IO -- mA Output saturation voltage, VO(sat) -- V Input voltage, VIN -- V Input current, IIN -- μA Output saturation voltage, VO(sat) -- V Ambient temperature, Ta -- °C Current drain, IS -- mA Supply voltage, VS -- V Current drain, ICC -- mA Supply voltage, VCC -- V Reverse Forward

PS No.3949-5/5 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 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, consequentia l 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 techn ical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC productsfor any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, anddistributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture oft h e part. 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.