View SX8120ISTRT_1262803.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

www.semtech.com /products/ page 1 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. description the sx8120/21 is a series of 1 v motor/led control timers. the sx8120/21 goes active on the press of a button. the output goes back to sleep on the next button press or after a preset time-out (15 sec or 30 sec on sx8120, 10 minutes or never on the sx8121). the time-out duration and the motor control polarity are pin-selected. when the sx8120/21 is active, it sets its motor control pin to high or low and sends a burst on its led pin to control a led or boost a command voltage. one output goes low when vdd is higher than the full charge voltage of an nimh cell to control a minimal charger. the sx8120/21 controls its io state starting at 0.6v to facilitate power-up. features 1 v operation 1 button operation pin selection of time-out pin selection of motor polarity boosted led control (drives bright white and green leds) nimh cell charger control (allows usb recharge) applications electric toothbrushes electric razors toys - led animation led pointer usb rechargeable ordering informations part number function time out SX8120ISTRT 1v motor controller 15 or 30 second sx8121istrt 1v motor controller 10 minute or none - available in tape and reel only - weee/rohs compliant- pb-free and halogen free. functional block diagram sx8120/21 vdd motor vss led to button polarity nimh 1.4v pulse (counter ) start/stop + debounce motor polarity burst 43khz vdd 3 - 5v charger motor 1 ? 2 v alkaline nimh or nicd cell 15 sec / 10 min 30 sec / none high low start and stop sx8120 / sx8121
acs - revision 2.2 august 2010 ? semtech corp. www.semtech.com /products/ page 2 section page table of content advanced communications & sensing datasheet sx8120/21 1v motor/led control timer e lectrical s pecification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 circuit specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 soic-8 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 t echnical d escription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 system architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 sx8120/21 architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 sx8120/21 timing and output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 digital input levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.4 debounce on button pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.5 nimh pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 safe mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.2 low batt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3 sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.4 active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 a pplication examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 motor and led timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.1 start/stop a motor with a 30 seconds time-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.2 start/stop a led with a 15 seconds time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.3 start/stop a high current motor with 10 minutes time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 m echanical s pecification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.1 soic-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.1.1 outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.1.2 land pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1.3 sx8120 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1.4 sx8121 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
www.semtech.com /products/ page 3 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. electrical specification 1 absolute maximum ratings note the absolute maximum ratings, in table below, are stress ratings only. functional operation of the device at conditions ot her than those indicated in the operating conditions sections of this specification is not implied. exposure to the absolute maximum rati ngs, where different to the operating conditions, for an extended period may reduce the reliability or useful lifetime of the product. table 1. absolute maximum ratings parameter symbol min max unit supply voltage v amrvdd -0.3 2.5 v pin voltage (non-supply pins) v amrvin vss - 0.3 vdd + 0.3 v sink or source current on any pin i amriss -100 100 ma storage temp t stor -50 +150 c esd conditions hbm esd hbm 4000 v cdm esd cdm 1000 v mm esd mm 200 v esd caution esd (electrostatic discharge) sensitive device charged devices and circuit boards can discharge without detection. athough this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy esd. therfore, proper esd precaution should be taken to avoid performance degradation or loss of functionality.
www.semtech.com /products/ page 4 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 2specifications 2.1 operating conditions 2.2 circuit specification note circuit operates within the supply voltage range vdd-vss = vddoc. the specification is verified within the fu ll spec voltage range vdd-vss = vddspec. table 2. operating range parameter symbol min max unit supply voltage range v ddoc 0.9 2.0 v full spec voltage range v ddspec 1.0 1.8 v ambient temperature t oc -40 +85 c note conditions: temperature within toc and vdd-vss within vddspec, unless otherwise stated. table 3. circuit electrical specification parameter symbol min typ max unit safe mode low limit v safe 0.6 0.7 v por voltage threshold v por 0.9 v hysteresis v porhyst 150 mv switch on level v on 0.95 1.07 1.15 v switch off level t : 0 to 70c v off 0.85 0.95 1.00 v t : -40 to 85c 0.85 0.95 1.05 v v on vdd on : active or sleep low batt safe low batt safe v off v por mode : time v safe v porhyst
www.semtech.com /products/ page 5 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. table 4. circuit power consumption specifications parameter symbol min typ max unit supply current in active mode (outputs no loaded, motor pin on, led pin bursting, counting) vdd=1.2v i active 20 a vdd=2.0v 30 a supply current in sleep mode (outputs no loaded, motor pin off, led pin tied to ground, not counting) vdd=1.2v i sleep 10 30 a vdd=2.0v 15 40 a supply current in low batt mode i lowbatt 10 30 a supply current in safe mode i safe 10 a table 5. digital ios specifications parameter symbol min typ max unit startup time at power-on t start 0.1 s nimh pin switch voltage threshold v nimh 1.41 v hysteresis 30 mv output high voltage v oh 3/4 vdd vdd v output low voltage v ol vss 1/4 vdd v max source current at min voh vdd = 0.9 v i oh09 4ma vdd >= 1.2 v i oh12 10 ma max sink current at max vol vdd = 0.9 v i ol09 4ma vdd >= 1.2 v i ol12 10 ma input capacitance c i 10 pf
www.semtech.com /products/ page 6 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 3pinout 3.1 soic-8 pinout table 6. sx8120/21 pinout pin number pin name pin type pin function safe mode 1 to digital input connect to vdd or vss to select timout period high impedance 2 button digital input switch to vss to start/stop motor high impedance 3 polarity digital input - connect to vdd for motor pin high when on. - connect to vss for motor pin low when on. high impedance 4 nimh digital output checks the battery status high impedance 5 led digital output sends bursts to light a led when the motor is on high impedance 6 vss power ? ground negative supply and ic ground - 7 motor digital output motor control output ( polarity is set by polarity) high impedance 8 vdd power ? positive positive supply - figure 1. sx8120/21 pinout to button polarity nimh vdd motor vss led 18
www.semtech.com /products/ page 7 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. technical description 4 system architecture 4.1 sx8120/21 architecture the system is based on an integrated 5% precise counter. it starts and stops pulses based on the command of a button and times-out after a selectable period of time. the motor output polarity is controlled by the polari ty input. if polarity is connected the vdd that the motor will be active high, if polarity is connected th e vss, the motor will be active low. motor output is usually followed by an npn transistor to drive the motor, in this case it is active high. in parallel with the motor there is a led output that se nds 3 us pulses at 43 khz that can be used to drive a white or green led with an npn transistor and a 40-200 uh coil. figure 2. sx8120/21 architecture sx8120/21 vdd motor vss led to button polarity nimh 1.4v pulse (counter ) start/stop + debounce motor polarity burst 43khz vdd
www.semtech.com /products/ page 8 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 4.2 sx8120/21 timing and output the following settings are available on the sx8120/21. the timeout and polarity values are set at ch ip startup and at each start/stop command. table 7. sx8120/21 settings part number to polarity ac tive motor time out after sx8120 vdd vdd 15 seconds vss 15 seconds vss vdd 30 seconds vss 30 seconds sx8121 vdd vdd 10 minutes vss 10 minutes vss vdd never vss never
www.semtech.com /products/ page 9 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 4.3 digital input levels input thresholds levels scale with vdd. inputs have an hysteresis based on a schmitt trigger schematics. 4.4 debounce on button pin the button pin is active low. for a start/stop command detection, the voltage on the button pin must be maintained low during 10ms. then, a delay of 20ms is necessary before the next start/stop command. this allow to remove wrong start/stop commands due to oscillations when using of low-cost push buttons. 4.5 nimh pin pin nimh goes high when vdd is below the nimh th reshold of 1.41v and low when vdd is above the same threshold. a 30mv hysteresis allow to remove nimh pin oscilla tion when the vdd voltage is near the threshold. the supply voltage on vdd pin is checked at a 1hz rate, so the nimh pin can switch with a delay of 1 seconds max. figure 3. input level scales with vdd vdd vih vil 1 0 vdd vil, vih vs vdd 2 1.5 0.5 0.8 1 1.2 1.4 1.6 1.8 2 threshold
www.semtech.com /products/ page 10 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 5operating modes 5.1 safe mode the internal system goes in safe mode as soon as the battery voltage is above 0.6-0.7v. in this mode all pins are set in high impedance and are inac tive. this guarantees a safe start-up when a battery is inserted. the power consumption is 10ua max and prevents th e battery from leaking when it is empty. 5.2 low batt mode the device is in low batt mode as soon as the battery voltage reaches the 0.9v por threshold. in this mode, each output pin is in a static state. the device will not react to the button pin. the led pin is set to ground. the motor pin is off according to polarity pin, mean ing at vss if polarity was set to 1 or at vdd if polarity was set to 0. the chip internally checks the vdd voltage each second s and wakes up to sleep mode when vdd > v on ( 1.05v typical). nimh pin is forced high u ntil the vdd voltage goes below 0.9v (back to safe mode), or above 1.41v (battery full). 5.3 sleep mode the motor pin is off according to polarity pin, mean ing at vss if polarity was set to 1 or at vdd if polarity was set to 0. led pin is tied to ground. the chip reacts to the button pin and if a low pulse occurs, the device switch to active mode. nimh pin is set according to vdd voltage (see 4.5. nimh pin ). 5.4 active mode the motor pin is on according to the polarity pin, me aning at vdd if polarity wa s set to 0 or at vss if polarity was set to 1. the led pin send 43khz burst. th e internal system is in active mode until the timeout occurs or the button is pulsed again and then goes back to the sleep mode . nimh pin is set according to vdd voltage (see 4.5. nimh pin ). figure 4. operating modes vs battery voltage 1 1. typical values. switch on vdd switch off por hysteresis time safe active or sleep safe low batt low batt 1.05v 0.95v 0.9v 0.6v
www.semtech.com /products/ page 11 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. application examples 6 motor and led timer 6.1 start/stop a motor with a 30 seconds time-out. 6.2 start/stop a led with a 15 seconds time-out figure 5. pressing the button will start the motor for 30 seconds or until the button is pressed again. figure 6. pressing the button will light up the led for 15 seconds or until the button is pressed again. to vdd button polarity nimh motor vss led sx8120 motor alkaline cell or nimh/nicd cell start/stop button to vdd button polarity nimh motor vss led sx8120 led alkaline cell or nimh/nicd cell start/stop button
www.semtech.com /products/ page 12 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 6.3 start/stop a high current motor with 10 minutes time-out figure 7. pressing the button will start the motor for 10 minutes or until the button is pressed again. to vdd button polarity nimh motor vss led sx8121 alkaline cell or nimh/nicd cell start/stop button
www.semtech.com /products/ page 13 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. mechanical specification 7packages 7.1 soic-8 7.1.1 outline drawing see detail detail a a .050 bsc .236 bsc 8 .010 .150 .189 .154 .193 .012 - 8 0.25 1.27 bsc 6.00 bsc 3.90 4.90 - .157 .197 3.80 4.80 .020 0.31 4.00 5.00 0.51 bxn 2x n/2 tips seating aaa c e/2 2x 12 n a d a1 e1 bbb c a-b d ccc c e/2 a2 (.041) .004 .008 - .028 - - - - 0 .016 .007 .049 .004 .053 8 0 0.20 0.10 - 8 0.40 0.17 1.25 0.10 .041 .010 .069 .065 .010 1.35 (1.04) 0.72 - 1.04 0.25 - - - 1.75 1.65 0.25 0.25 - .010 .020 0.50 - c l (l1) 01 0.25 gage plane h h 3. dimensions "e1" and "d" do not include mold flash, protrusions or gate burrs. -b- controlling dimensions are in millimeters (angles in degrees). datums and to be determined at datum plane notes: 1. 2. -a- -h- side view a b c d e h plane reference jedec std ms-012, variation aa. 4. l1 n 01 bbb aaa ccc a b a2 a1 d e e1 l h e c dim min millimeters nom dimensions inches min max max nom e
www.semtech.com /products/ page 14 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 7.1.2 land pattern this land pattern is for reference purposes only. consult your manufacturing group to ensure your companys manufacturing guidelines are met. (.205) (5.20) z g y p (c) 3.00 .118 1.27 .050 0.60 .024 2.20 .087 7.40 .291 x inches dimensions z p y x dim c g millimeters this land pattern is for reference purposes only. consult your manufacturing group to ensure your company's manufacturing guidelines are met. notes: 1. reference ipc-sm-782a, rlp no. 300a. 2.
www.semtech.com /products/ page 15 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 7.1.3 sx8120 marking information
!" #$%& ''(( % !" )*)+& !!!! , !" -*)*& ''(( !!!! #$%
www.semtech.com /products/ page 16 advanced communications & sensing datasheet sx8120/21 1v motor/led control timer acs - revision 2.2 august 2010 ? semtech corp. 7.1.4 sx8121 marking information
!" !" )*)+ !!!! , !" -*)* !!!!
acs - revision 2.2 august 2010 ? semtech corp. www.semtech.com /products/ page 17 iso9001 certified semtech corporation advanced communications & sensing products contact information e-mail: sales@semtech.com or acsupport@semtech.com internet: http://www.semtech.com usa 200 flynn road, camarillo, ca 93012-8790. tel: +1 805 498 2111 fax: +1 805 498 3804 far east 12f, no. 89 sec. 5, nanking e. road, taipei, 105, twn, r.o.c. tel: +886 2 2748 3380 fax: +886 2 2748 3390 europe semtech ltd., units 2 & 3, park court, premier way, abbey park industrial estate, romsey, hampshire, so51 9dn. tel: +44 (0)1794 527 600 fax: +44 (0)1794 527 601 ? semtech 2010 all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not fo rm part of any quotation or contract, is believed to be accurate and reliable and may be chan ged without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. semtech assumes no responsibili ty or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range. semtech products are not designed, intended, authorized or warranted to be suitable for use in life- support applications, devices or systems or othe r critical applications. inclusion of semtech products in such applications is understood to be undertaken solely at the customers own risk. should a customer purchase or use semtech products for any such unauthorized application, the customer shall indemnify and hold semtech and its officers, employees, subsidiaries, affili ates, and distributors harmless against all claims, costs damages and atto rney fees which could arise. notice: all referenced brands, product names, service na mes and trademarks are the property of their respective owners. advanced communications & sensing datasheet sx8120/21 1v motor/led control timer

▲Up To Search▲

Price & Availability of SX8120ISTRT

	To Download SX8120ISTRT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .