41812 sy/32812 sy 20120323-s00007/31512 sy no.a2038-1/6 http://onsemi.com semiconductor components industries, llc, 2013 june, 2013 lv8548mc overview the lv8548mc is a 2-channel low saturation voltage forward/reverse motor driver ic. it is optimal for motor drive in 12v system products and can drive either two dc motors, one dc motor using parallel connection, or it can drive a stepping motor in full-step and half-step. functions ? dmos output transistor adoption (upper and lower total ron=1 typ) ? the compact package (soic10) is adopted. ? for one power supply (the control system power supply is unnecessary.) ? v cc max=20v, i o max=1a ? our motor driver ic, lb1948mc, and compatible pin ? current consumption 0 when standing by ? it is possible to connect it in parallel (parallel, connected operation of drive ch). ? built-in brake function specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum power supply voltage v cc max -0.3 to +20 v output impression voltage vout -0.3 to +20 v input impression voltage v in -0.3 to +6 v gnd pin outflow current ignd for ch 1.0 a allowable power dissipation pd max * 1.0 w operating temperature topr -30 to +85 c storage temperature tstg -40 to +150 c *: when mounted on the specified pr inted circuit board (57.0mm 57.0mm 1.6mm), glass epoxy, both sides caution 1) absolute maximum ratings represent the va lue which cannot be exceeded for any length of time. caution 2) even when the device is used within the range of abso lute maximum ratings, as a result of continuous usage under hig h temperature, high current, high voltage, or drastic temperature change, the reliability of th e ic may be degraded. please contact us for the further detai ls. bi-cmos integrated circuit 12v low saturation voltage drive forward/reverse motor driver orderin g numbe r : ENA2038b 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 reliabili ty.
lv8548mc no.a2038-2/6 recommendation operating conditions at ta = 25 c parameter symbol conditions ratings unit power supply voltage v cc 4.0 to 16 v input ?h? level voltage v in h +1.8 to +5.5 v input ?l? level voltage v in l -0.3 to +0.7 v electrical characteristics at ta = 25 c, v cc = 12v ratings parameter symbol conditions min typ max unit i cc 0 standby mode in1=in2=in3=in4=?low? 1 a power supply voltage i cc 1 it is "high" from in1 as for either of in4. load opening 1.7 2.3 ma input current i in v in =5v 35 50 65 a thermal shutdown operating temperature ttsd design certification 150 180 210 c width of temperature hysteria ttsd design certification 40 c low voltage protection function operation voltage vthv cc 3.3 3.5 3.65 v release voltage vthret 3.55 3.8 3.95 v output on resistance (upper and lower total) r on i out =1.0a 0.7 1 1.25 output leak current i o leak v o =16v 10 a diode forward voltage vd id=1.0a 1.0 1.2 v package dimensions unit : mm (typ) 3426a pin assignment v cc 1 2 3 4 5 10 9 8 7 6 in1 in2 in3 in4 out1 out2 out3 out4 gnd lv8548mc pd max - ta 0 1.5 50 30 10 0 -30 0.5 1.0 0.52 70 -10 90 ambient temperature, ta -- c allowable power dissipation, pd max -- w specified circuit board: 57.0 57.0 1.6mm 3 glass epoxy board, both sides sanyo : soic10 4.9 3.9 6.0 6 10 5 1 0.835 0.21 0.37 0.41 1.0 0.175 1.5 1.75 max
lv8548mc no.a2038-3/6 block diagram 1. at two dc motor drive 2. at one stepping motor drive lvs input logic h-side pre l-side pre h-side pre l-side pre v cc v cc out1 out2 m m out3 out4 in1 in2 in3 in4 tsd vref gnd lvs input logic h-side pre l-side pre h-side pre l-side pre v cc v cc out1 out2 m out3 out4 in1 in2 in3 in4 tsd vref gnd
lv8548mc no.a2038-4/6 pin function pin no. pin name pin function equivalent circuit 1 v cc power-supply voltage pin. v cc voltage is impressed. the permissible operation voltage is from 4.0 to 16.0(v). the capacitor is connected for stabilization for gnd pin (6pin). 2 in1 motor drive control input pin. driving control input pin of out1 (10pin) and out2 (9pin). it combines with in2 pin (3pin) and it fights desperately. the digital input it, range of the "l" level input is 0 to 0.7(v), range of the "h" level input is from 1.8 to 5.5(v). pwm can be input. pull-down resistance 100(k ? ) is built into in the pin. it becomes a standby mode be cause all in1, in 2, in3, and in4 pins are made "l", and the circuit current can be adjusted to 0. 3 in2 motor drive control input pin. driving control input pin of out1 (10pin) and out2 (9pin). it combines with in1 pin (2pin) and it uses it . pwm can be input. with built-in pull-down resistance. 4 in3 motor drive control input pin. driving control input pin of out3 (8pin) and out4 (7pin). it combines with in4 pin (5pin) and it uses it . pwm can be input. with built-in pull-down resistance. 5 in4 motor drive control input pin. driving control input pin of out3 (8pin) and out4 (7pin). it combines with in3 pin (4pin) and it uses it . pwm can be input. with built-in pull-down resistance. 6 gnd ground pin. 7 out4 driving output pin. the motor coil is connected bet ween terminal out3 (8pin). 8 out3 driving output pin. the motor coil is connected bet ween terminal out4 (7pin). 9 out2 driving output pin. the motor coil is connected bet ween terminal out1 (10pin). 10 out1 driving output pin. the motor coil is connected bet ween terminal out2 (9pin). operation explanation 1. dcm output control logic input output in1 in2 in3 in4 out1 out2 out3 out4 remarks l l l l off off off off stand-by l l off off stand-by h l h l forward l h l h reverse h h l l 1ch brake l l off off stand-by h l h l forward l h l h reverse h h l l 2ch brake v cc out1 (out3) out2 (out4)
lv8548mc no.a2038-5/6 2. about the switch time from the stand-by state to the state of operation when in1, in2, in3, in4 are "l", this ic has complete ly stopped operating. after the time of reset of about 7 s of an internal setting, it shifts to a prescribed output status corre sponding to the state of the input when the signal enters the input terminal. reset of about 7 s doesn't hang even if the motor is driven from the stand-by state when either ch drives and the output becomes an output status corresponding to the state of the input. as for full power tr between the reset time, turning off is maintained. 3. example of current wave type in each excitation mode when stepping motor parallel input is controlled. ? full-step mode ? half-step mode application circuit example 1. example of applied circuit when two dc motor driving 2. example of applied circuit when one stepping motor driving in1 100 (%) -100 0 100 -100 0 in2 in3 in4 i1 i2 in1 100 (%) -100 0 100 -100 0 in2 in3 in4 i1 i2 in1 out1 in3 out3 1ch input on 2ch input on 2ch input on input off stand-by state stand-by state 1ch side forward 2ch side forward (reset time) (reset time) there is no reset time when another ch drives. out1 10 9 8 7 6 out2 out3 out4 gnd 2 3 4 5 in4 in3 in2 in1 v cc lv8548mc m m 1 c1 + out1 10 9 8 7 6 out2 out3 out4 gnd 2 3 4 5 in4 in3 in2 in1 v cc lv8548mc m 1 c1 + logic input logic input
lv8548mc ps no.a2038-6/6 3. example of applied circuit when connecting it in parallel the use likened to h bridge 1ch is shown possible in the figure below by connecting in1 with in3, in2 with in4, out1 with out3, out2, and out4. (i o max=2.0a, upper and lower total r on =0.5 ) * bypass capacitor (c1) connected between v cc -gnd of all examples of applied ci rcuit recommends the electric field capacitor of 0.1 a to 10 a. confirm there is no problem in operation in the state of th e motor load including the te mperature property about the value of the capacitor. mount the position where the capacitor is mounted on nearest ic. out1 10 9 8 7 6 out2 out3 out4 gnd 2 3 4 5 in4 in3 in2 in1 v cc lv8548mc m 1 c1 + logic input 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 mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising 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 authorize d 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 appli cation 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 products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner.
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