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ta8440h/hq 2003-08-12 1 toshiba bipolar linear integrated circuit silicon monolithic ta8440h/hq full-bridge driver (h-switch) for dc motor (driver for switching between forward and reverse rotation) the ta8440h/hq is a full-bridge driver for selecting the forward and reverse running of a motor with brushes and can control four modes: forward, reverse, stop and braking. the motor driving unit and the control unit have a separate power supply line, and the ta8440h/hq can also be used as a stepping motor driver. features z output current is up to 1.5 a (ave.) and 3.0 a (peak). z 4 modes of forward, reverse, stop, and braking are available and a back-electromotive force absorbing diode has been built-in. z thermal shutdown circuit incorporated z input is compatible with cmos. z built-in input pull-up resistor. brake = 200 k ? (typ.) z built-in input pull-down resistor. in, enable = 100 k ? (typ.) weight: 4.04 g (typ.) the TA8440HQ: the TA8440HQ is sn plated product including pb the following conditions apply to solderability: *solderability 1. use of sn-63pb solder bath *solder bath temperature = 230c *dipping time = 5 seconds *number of times = once *use of r-type flux 2. use of sn-3.0ag-0.5cu solder bath *solder bath temperature = 245c *dipping time = 5 seconds *the number of times = once *use of r-type flux
ta8440h/hq 2003-08-12 2 block diagram
ta8440h/hq 2003-08-12 3 pin function pin no. symbol functional description 1 enable enable terminal output is off when l 2 in forward rotation/reverse rotation switch terminal 3 brake brake terminal output is off when l 4 sg signal gnd 5 chop pwm signal input terminal 6 v cc power voltage supply terminal for control 7 v s power voltage supply terminal for motor driver 8 outa output terminal 9 pg power gnd 10 common common terminal 11 pg power gnd 12 out a output terminal ta8440f: 3, 6, 8, 10, 11, 12, 19, 20 pin is no connection. function input output mode in brake enable chop outa out a motor h h h l h l cw/ccw l h h l l h ccw/cw * * l * stop * l h * l l brake h h h h l chop l h h h l chop * : don?t care : high impedance maximum rating (ta = 25c) characteristics symbol rating unit v cc 7 supply voltage v s 50 v input voltage v in ? 0.3 to v cc v ave. i o (ave.) 1.5 a output current peak i o (peak) 3.0 a 2.25 (note 1) power dissipation p d 25.0 (note 2) w operating temperature t opr ? 30 to 75 c storage temperature t stg ? 55 to 150 c note 1: no heat sink note 2: tc = 75c
ta8440h/hq 2003-08-12 4 electrical characteristics (v cc = 5 v, v s = 24 v, ta = 25c) characteristics symbol test circuit test condition min typ. max unit high v in (h) 3.5 D v cc input voltage low v in (l) 1 in, chop, enable, brake gnd D 1.5 v i in ? 1 (h) chop D 5 52 i in ? 2 (h) in, enable D 40 60 input current high i in ? 3 (h) brake v in = 5 v D 0 5.5 i in ? 1 (l) chop D 0 5.5 i in ? 2 (l) in, enable D 0 5.5 input current low i in ? 3 (l) 1 brake v in = 0 v source type D 25 52 a i cc1 stop D 6 10.5 i cc2 forward/reverse D 10 14.5 current consumption (i) i cc3 2 brake D 14 18.5 ma i s1 stop D 2 4.2 i s2 forward/reverse D 3.5 5.0 current consumption (ii) i s3 2 brake D 2.5 3.7 ma upper side v sat ? u1 1.5 2.0 2.7 under side v sat ? l1 i out = 1.5a 0.7 1.25 1.9 upper side v sat ? u2 2.7 3.0 3.9 output saturation voltage under side v sat ? l2 3 i out = 3.0a 1.7 2.0 2.9 v upper side v f ? u1 D 3.5 D diode forward orientation voltage under side v f ? l1 D i out = 1.5a D 1.3 D v upper side i oh D D 200 output leakage current under side i ol 4 v s = 30v D D 100 a shut down temperature t sd D D D 170 D c t plh D 2.7 D t phl in ? out D 1.2 D t plh D 0.7 D t phl chop ? out D 2.5 D t plh D 2.9 D t phl enable ? out D 1.1 D t plh D 45 D transfer time t phl D brake ? out D 45 D s
ta8440h/hq 2003-08-12 5 test circuit 1 v in (h), v in (l) , i in (h) , i in (l) test circuit 2 i cc1 , i cc2 , i cc3 , i s1 , i s2 , i s3 ta8440h/hq ta8440h/hq
ta8440h/hq 2003-08-12 6 test circuit 3 v sat ? l , v sat ? u note: calibrate i out to 1.5 / 3.0 a by r l . test circuit 4 i oh , i ol ta8440h/hq ta8440h/hq
ta8440h/hq 2003-08-12 7 application circuit note 1: connect a schottky diode (toshiba 2gwj42 or equivalent) for pass-through current prevention between each of the two outputs and a ground. note 2: when turning on the power for the ic, raise v s after v cc has been raised to its rated level (or v cc and v s simultaneously). when shutting off the power, drop v cc after v s (or v s and v cc simultaneously). note 3: keep the control pins (in, brake, en able, and chop) low before the supply voltage v cc has been raised to its rated level. (alternatively, raise all these voltages simultaneously.) note 4: insert a current limiting resistor (r) or fuse for over-current protection. note 5: the ic contains a thermal circuit breaker. however, if the ic operates over its maximum rating, breakdown may occur before the protection circuit starts operating. note 6: utmost care is necessary in the design of the output line, v cc , v s , and gnd line since the ic may be damaged due to short circuits between outputs, supply faults, or ground faults. ta8440h/hq
ta8440h/hq 2003-08-12 8 package dimensions weight: 4.04 g (typ.)
ta8440h/hq 2003-08-12 9 notes on contents 1. block diagrams some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. 2. equivalent circuits the equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. 3. timing charts timing charts may be simplified for explanatory purposes. 4. maximum ratings the absolute maximum ratings of a semiconductor device are a set of specified parameter values which must not be exceeded during operation, even for an instant. if any of these ratings are exceeded during operation, the device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no longer be guaranteed. moreover, these operations with exceeded ratings may cause breakdown, damage and/or degradation to other equipment. applications using the device should be designed so that each maximum rating will never be exceeded in any operating conditions. before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this document. 5. application circuits the application circuits shown in this document are provided for reference purposes only. thorough evaluation is required, especially at the mass production design stage. toshiba does not grant any license to any industrial proper ty rights by providing these examples of application circuits. 6. test circuits components in the test circuits are only used to obtain and confirm the device characteristics. these components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment. about the handling of ics install the product correctly to avoid breakdown, da mage and/or degradation to the product or equipment. about overcurrent protection and heat protection circuits these protection functions are intended to guard agains t certain output short circuits or other abnormal conditions with only temporary effect, and are not guaranteed to prevent the ic from being damaged. these protection features may not be effective if the product is operated outside the guaranteed operating ranges, and some output short circuits may result in the ic being damaged. the overcurrent protection feature is only intended to protect the ic from a temporary short circuit. short circuits of longer duration may damage the ic through undue stress. the systems must be configured so that any overcurrent condition will be eliminated as soon as possible. counter-electromotive force
ta8440h/hq 2003-08-12 10 when the motor reverses or stops, counter-electromotiv e force in the motor may influence the current to flow to the power source. if the power source lacks sink capability, the ic power and output pins may exceed the rating. the counter-electromotive force of the motor varies depending on the conditions of use and the features of the motor. therefore ensure that there is no damage to the ic or problem in operation, and no error in or damage to peripheral circuits resulting from counter-electromotive force.
ta8440h/hq 2003-08-12 11 ? the information contained herein is subject to change without notice. ? the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba for any infringements of patents or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of toshiba or others. ? toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. ? the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. ? the products described in this document are subject to the foreign exchange and foreign trade laws. ? toshiba products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 030619eba restrictions on product use

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