SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING Description DATASHEET Features The SX8120/21 is a series of 1 V motor/LED control timers. 1 V operation 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. Pin selection of time-out 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. 1 button operation 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 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. 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 / SX8121 SX8120/21 15 sec / 10 min TO Pulse (counter ) BUTTON Start/Stop + debounce VDD Motor 30 sec / None Start and Stop Motor polarity MOTOR High POLARITY VSS 1 – 2 V Alkaline NiMH or NiCd cell VDD Low NIMH Burst 43kHz 1.4V LED 3 - 5V charger ACS - Revision 2.2 © Semtech Corp. August 2010 Page 1 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET TABLE OF CONTENT Section Page ELECTRICAL SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 2 2.1 2.2 3 3.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOIC-8 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 4 4 6 6 TECHNICAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 4.1 4.2 4.3 4.4 4.5 5 5.1 5.2 5.3 5.4 System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SX8120/21 architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SX8120/21 timing and output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Digital input levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Debounce on BUTTON pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 NiMH pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Safe Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Low Batt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Active Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 APPLICATION EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 6.1 6.2 6.3 Motor and LED timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Start/stop a motor with a 30 seconds time-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Start/stop a LED with a 15 seconds time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Start/stop a high current motor with 10 minutes time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 11 11 12 MECHANICAL SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 7.1 7.1.1 7.1.2 7.1.3 7.1.4 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOIC-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Land pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SX8120 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SX8121 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACS - Revision 2.2 © Semtech Corp. August 2010 Page 2 13 13 13 14 15 16 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET ELECTRICAL SPECIFICATION 1 Absolute Maximum Ratings Note Table 1. The Absolute Maximum Ratings, in table below, are stress ratings only. Functional operation of the device at conditions other than those indicated in the Operating Conditions sections of this specification is not implied. Exposure to the absolute maximum ratings, where different to the operating conditions, for an extended period may reduce the reliability or useful lifetime of the product. Absolute maximum ratings Parameter Symbol Min Max Unit Supply Voltage VAMRVDD -0.3 2.5 V Pin Voltage (non-supply pins) VAMRVIN VSS - 0.3 VDD + 0.3 V Sink or source current on any pin IAMRISS -100 100 mA Storage Temp TSTOR -50 +150 °C ESD conditions HBM ESDHBM 4000 V CDM ESDCDM 1000 V MM ESDMM 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. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 3 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 2 Specifications 2.1 Operating Conditions Note Table 2. DATASHEET Circuit operates within the Supply Voltage Range VDD-VSS = VDDOC. The specification is verified within the Full Spec Voltage Range VDD-VSS = VDDSPEC. Operating range Parameter Symbol Min Max Unit Supply Voltage Range VDDOC 0.9 2.0 V Full Spec Voltage Range VDDSPEC 1.0 1.8 V Ambient Temperature TOC -40 +85 °C 2.2 Circuit specification Note Table 3. Conditions: Temperature within TOC and VDD-VSS within VDDSPEC, unless otherwise stated. Circuit electrical specification Parameter Symbol Typ Max Unit VSAFE 0.6 0.7 V Threshold VPOR 0.9 V Hysteresis VPORHYST 150 mV Safe mode low limit Min POR voltage Switch ON level VON T : 0 to 70°C Switch OFF level 0.95 1.07 1.15 V 0.85 0.95 1.00 V 0.85 0.95 1.05 V VOFF T : -40 to 85°C VDD VON VOFF VPOR VPORHYST VSAFE time Mode : ACS - Revision 2.2 © Semtech Corp. Safe Low Batt August 2010 ON : Active or Sleep Page 4 Low Batt Safe www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING Table 4. Circuit power consumption specifications Parameter Symbol Supply current in Active mode (outputs no loaded, Motor pin on, LED pin bursting, counting) VDD=1.2V Supply current in Sleep mode (outputs no loaded, Motor pin off, LED pin tied to ground, not counting) VDD=1.2V Min Typ Max VDD=2.0V μA 30 μA 10 30 μA 15 40 μA 10 30 μA 10 μA Max Unit ISLEEP VDD=2.0V ILOWBATT Supply current in Safe mode ISAFE Unit 20 IACTIVE Supply current in Low Batt mode Table 5. DATASHEET Digital IOs specifications Parameter Symbol Startup time at power-on Min tSTART Threshold NIMH pin switch voltage Typ 0.1 s 1.41 V 30 mV VNIMH Hysteresis Output High Voltage VOH 3/4 VDD VDD V Output Low Voltage VOL VSS 1/4 VDD V VDD = 0.9 V IOH09 4 mA VDD >= 1.2 V IOH12 10 mA VDD = 0.9 V IOL09 4 mA VDD >= 1.2 V IOL12 10 mA Max Source Current at min VOH Max Sink Current at max VOL Input capacitance ACS - Revision 2.2 © Semtech Corp. CI August 2010 Page 5 10 pF www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 3 Pinout 3.1 SOIC-8 pinout Table 6. DATASHEET 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 - 1 8 TO VDD BUTTON MOTOR POLARITY VSS NIMH LED Figure 1. SX8120/21 pinout ACS - Revision 2.2 © Semtech Corp. August 2010 Page 6 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET 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. SX8120/21 TO Pulse (counter ) BUTTON Start/Stop + debounce VDD Motor polarity POLARITY MOTOR VSS VDD NIMH Burst 43kHz 1.4V LED Figure 2. SX8120/21 Architecture The MOTOR output polarity is controlled by the POLARITY input. If POLARITY is connected the VDD that the MOTOR will be active high, if POLARITY is connected the 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 sends 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. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 7 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 4.2 DATASHEET SX8120/21 timing and output The following settings are available on the SX8120/21. Table 7. SX8120/21 settings Part number TO Polarity Active motor Time out after VDD 15 seconds VSS 15 seconds VDD 30 seconds VSS 30 seconds VDD 10 minutes VSS 10 minutes VDD never VSS never VDD SX8120 VSS VDD SX8121 VSS The timeout and polarity values are set at chip startup and at each start/stop command. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 8 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 4.3 DATASHEET Digital input levels Input thresholds levels scale with VDD. Inputs have an hysteresis based on a Schmitt trigger schematics. VIL, VIH vs VDD 2 1.5 Threshold VDD 1 VIH 0.5 VIL 0 0.8 1 1.2 1.4 1.6 1.8 2 VDD Figure 3. Input level scales with VDD 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 threshold of 1.41V and low when VDD is above the same threshold. A 30mV hysteresis allow to remove NiMH pin oscillation 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. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 9 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 5 DATASHEET Operating Modes VDD 1.05V Switch ON 0.95V Switch OFF 0.9V POR Hysteresis SAFE 0.6V LOW BATT ACTIVE or SLEEP LOW BATT SAFE time Figure 4. Operating modes vs battery voltage 1 1. Typical values. 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 inactive. This guarantees a safe start-up when a battery is inserted. The power consumption is 10uA max and prevents the 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, meaning 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 seconds and wakes up to Sleep mode when VDD > VON ( 1.05V typical). NIMH pin is forced high until 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, meaning 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, meaning at VDD if POLARITY was set to ‘0’ or at VSS if POLARITY was set to ‘1’. The LED pin send 43kHz burst. The 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). ACS - Revision 2.2 © Semtech Corp. August 2010 Page 10 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET APPLICATION EXAMPLES 6 Motor and LED timer 6.1 Start/stop a motor with a 30 seconds time-out. TO SX8120 MOTOR BUTTON Start/stop button VDD Motor POLARITY VSS NIMH LED Alkaline cell or NiMH/NiCd cell Figure 5. Pressing the button will start the motor for 30 seconds or until the button is pressed again. 6.2 Start/stop a LED with a 15 seconds time-out TO Start/stop button SX8120 VDD BUTTON MOTOR POLARITY VSS NIMH LED Alkaline cell or NiMH/NiCd cell LED Figure 6. Pressing the button will light up the LED for 15 seconds or until the button is pressed again. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 11 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 6.3 DATASHEET Start/stop a high current motor with 10 minutes time-out TO Start/stop button SX8121 VDD BUTTON MOTOR POLARITY VSS NIMH LED Alkaline cell or NiMH/NiCd cell Figure 7. Pressing the button will start the motor for 10 minutes or until the button is pressed again. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 12 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET MECHANICAL SPECIFICATION 7 Packages 7.1 SOIC-8 7.1.1 Outline drawing DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX A D e 2X E/2 E1 E 1 2 ccc C 2X N/2 TIPS .069 .053 .010 .004 .065 .049 .020 .012 .010 .007 .189 .193 .197 .150 .154 .157 .236 BSC .050 BSC .010 .020 .016 .028 .041 (.041) 8 0° 8° .004 .010 .008 A A1 A2 b c D E1 E e h L L1 N 01 aaa bbb ccc N e/2 B D 1.35 1.75 0.25 0.10 1.65 1.25 0.31 0.51 0.25 0.17 4.80 4.90 5.00 3.80 3.90 4.00 6.00 BSC 1.27 BSC 0.25 0.50 0.40 0.72 1.04 (1.04) 8 0° 8° 0.10 0.25 0.20 aaa C h A2 A SEATING PLANE C h A1 bxN bbb H C A-B D c GAGE PLANE 0.25 SEE DETAIL L (L1) A DETAIL SIDE VIEW 01 A NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. REFERENCE JEDEC STD MS-012, VARIATION AA. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 13 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 7.1.2 DATASHEET Land pattern This land pattern is for reference purposes only. Consult your manufacturing group to ensure your company’s manufacturing guidelines are met. X DIM (C) G C G P X Y Z Z Y DIMENSIONS INCHES MILLIMETERS (.205) .118 .050 .024 .087 .291 (5.20) 3.00 1.27 0.60 2.20 7.40 P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2. REFERENCE IPC-SM-782A, RLP NO. 300A. ACS - Revision 2.2 © Semtech Corp. August 2010 Page 14 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 7.1.3 DATASHEET SX8120 marking information "#$ &&'' !"#$% &&''$ !()(*% + !,)()% ACS - Revision 2.2 © Semtech Corp. August 2010 Page 15 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING 7.1.4 DATASHEET SX8121 marking information "# %%&& !"#$ %%&&' !()(*$ + !,)()$ ACS - Revision 2.2 © Semtech Corp. August 2010 Page 16 www.semtech.com/products/ SX8120/21 1V Motor/LED control timer ADVANCED COMMUNICATIONS & SENSING DATASHEET © 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 form part of any quotation or contract, is believed to be accurate and reliable and may be changed 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 responsibility 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 LIFESUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S 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, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Contact information Semtech Corporation Advanced Communications & Sensing Products E-mail: [email protected] or [email protected] Internet: http://www.semtech.com USA FAR EAST EUROPE 200 Flynn Road, Camarillo, CA 93012-8790. Tel: +1 805 498 2111 Fax: +1 805 498 3804 12F, No. 89 Sec. 5, Nanking E. Road, Taipei, 105, TWN, R.O.C. Tel: +886 2 2748 3380 Fax: +886 2 2748 3390 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 ISO9001 CERTIFIED ACS - Revision 2.2 © Semtech Corp. August 2010 Page 17 www.semtech.com/products/