sx8120 Semtech Corporation, sx8120 Datasheet

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sx8120

Manufacturer Part Number
sx8120
Description
1v Motor/led Control Timer
Manufacturer
Semtech Corporation
Datasheet
ACS - Revision 2.2
© Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
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.
Functional Block Diagram
SX8120 / SX8121
15 sec / 10 min
Start and Stop
30 sec / None
High
Low
charger
3 - 5V
August 2010
POLARITY
BUTTON
NIMH
TO
(counter )
1.4V
Start/Stop
debounce
Pulse
VDD
+
Page 1
Features
Applications
Ordering Informations
Part number
SX8120ISTRT
SX8121ISTRT
- Available in tape and reel only
- WEEE/RoHS compliant- Pb-Free and Halogen Free.
SX8120/21
polarity
1 V operation
1 button operation
Pin selection of time-out
Pin selection of motor polarity
Boosted LED control (drives bright white and green
NiMH cell charger control (allows USB recharge)
Electric toothbrushes
Electric razors
Toys - LED animation
LED pointer
USB rechargeable
43kHz
LEDS)
Motor
Burst
MOTOR
VDD
VSS
LED
Function
1V motor controller
1V motor controller
1V Motor/LED control timer
1 – 2 V Alkaline
NiMH or NiCd cell
www.semtech.com/products/
SX8120/21
Time out
15 or 30 second
10 minute or none
DATASHEET
Motor

Related parts for sx8120

sx8120 Summary of contents

Page 1

... ADVANCED COMMUNICATIONS & SENSING Description The SX8120/ series 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 ...

Page 2

... ECHANICAL PECIFICATION 7 Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.1 SOIC 7.1.1 Outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.1.2 Land pattern 7.1.3 SX8120 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1.4 SX8121 marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ACS - Revision 2.2 August 2010 © Semtech Corp Page 2 SX8120/21 1V Motor/LED control timer DATASHEET Page ...

Page 3

... ESD. Therfore, proper ESD precaution should be taken to avoid performance degradation or loss of functionality. ACS - Revision 2.2 August 2010 © Semtech Corp. Symbol Min V -0.3 AMRVDD V VSS - 0.3 AMRVIN I -100 AMRISS T -50 STOR ESD 4000 HBM ESD 1000 CDM ESD 200 MM Page 3 SX8120/21 1V Motor/LED control timer DATASHEET Max Unit 2.5 V VDD + 0.3 V 100 mA °C +150 www.semtech.com/products/ ...

Page 4

... August 2010 © Semtech Corp. Symbol V DDOC V DDSPEC T OC Symbol V SAFE Threshold V POR Hysteresis V PORHYST 70°C V OFF T : -40 to 85°C Safe Low Batt ON : Active or Sleep Page 4 SX8120/21 1V Motor/LED control timer DATASHEET Min Max 0.9 2.0 1.0 1.8 -40 +85 Min Typ Max 0.6 0.7 0.9 150 0.95 1.07 1.15 0.85 0.95 1.00 0.85 0.95 1.05 V ...

Page 5

... Symbol t START Threshold V NIMH Hysteresis V 3/4 VDD OH V VSS OL VDD = 0 OH09 VDD >= 1 OH12 VDD = 0 OL09 VDD >= 1 OL12 C I Page 5 SX8120/21 1V Motor/LED control timer DATASHEET Min Typ Max Min Typ Max 0.1 1.41 30 VDD 1/4 VDD www ...

Page 6

... Sends bursts to light a LED when the MOTOR is on High impedance Negative supply and IC ground Motor control output (polarity is set by POLARITY) Positive supply 1 TO BUTTON POLARITY NIMH Figure 1. SX8120/21 pinout Page 6 SX8120/21 1V Motor/LED control timer DATASHEET Pin function High impedance High impedance High impedance ...

Page 7

... 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 August 2010 © Semtech Corp. SX8120/21 Pulse (counter ) Start/Stop Motor + polarity debounce VDD Burst 1.4V 43kHz Figure 2. SX8120/21 Architecture Page 7 SX8120/21 1V Motor/LED control timer DATASHEET VDD MOTOR VSS LED www.semtech.com/products/ ...

Page 8

... ADVANCED COMMUNICATIONS & SENSING 4.2 SX8120/21 timing and output The following settings are available on the SX8120/21. Table 7. SX8120/21 settings Part number SX8120 SX8121 The timeout and polarity values are set at chip startup and at each start/stop command. ACS - Revision 2.2 August 2010 © Semtech Corp. ...

Page 9

... 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 August 2010 © Semtech Corp. VIL, VIH vs VDD VDD VIH VIL 1 1.2 1.4 VDD Figure 3. Input level scales with VDD Page 9 SX8120/21 1V Motor/LED control timer DATASHEET 1.6 1.8 2 www.semtech.com/products/ ...

Page 10

... August 2010 © Semtech Corp. Hysteresis LOW ACTIVE or SLEEP BATT Figure 4. Operating modes vs battery voltage 1.05V typical). NIMH pin is forced high until the VDD voltage goes below 0.9V (back pin). Page 10 SX8120/21 1V Motor/LED control timer DATASHEET LOW SAFE BATT time 1 4.5. NiMH pin). ...

Page 11

... Figure 6. Pressing the button will light up the LED for 15 seconds or until the button is pressed again. ACS - Revision 2.2 August 2010 © Semtech Corp. VDD SX8120 MOTOR VSS LED SX8120 VDD MOTOR VSS LED Page 11 SX8120/21 1V Motor/LED control timer DATASHEET Alkaline cell or Motor NiMH/NiCd cell Alkaline cell or NiMH/NiCd cell LED www.semtech.com/products/ ...

Page 12

... POLARITY NIMH Figure 7. Pressing the button will start the motor for 10 minutes or until the button is pressed again. ACS - Revision 2.2 August 2010 © Semtech Corp. VDD SX8121 MOTOR VSS LED Page 12 SX8120/21 1V Motor/LED control timer DATASHEET Alkaline cell or NiMH/NiCd cell www.semtech.com/products/ ...

Page 13

... ACS - Revision 2.2 August 2010 © Semtech Corp e bxN bbb C A-B D GAGE PLANE 0.25 A SEE DETAIL - DETERMINED AT DATUM PLANE Page 13 SX8120/21 1V Motor/LED control timer DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM - - A .053 .069 1. .004 .010 0. ...

Page 14

... 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 August 2010 © Semtech Corp. DIMENSIONS DIM INCHES (.205 .118 .050 X .024 Y .087 Y Z .291 Page 14 SX8120/21 1V Motor/LED control timer DATASHEET MILLIMETERS (5.20) 3.00 1.27 0.60 2.20 7.40 www.semtech.com/products/ ...

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... ADVANCED COMMUNICATIONS & SENSING 7.1.3 SX8120 marking information &&''  $    ACS - Revision 2.2 August 2010 © Semtech Corp. "#$ &&''           !  "#$% !  ()(*%       +  Page 15 SX8120/21 1V Motor/LED control timer DATASHEET  !  ,)()% www.semtech.com/products/ ...

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... ADVANCED COMMUNICATIONS & SENSING 7.1.4 SX8121 marking information %%&& ACS - Revision 2.2 August 2010 © Semtech Corp. "# %%&&           !  "#$ !  ()(*$       +  Page 16 SX8120/21 1V Motor/LED control timer DATASHEET  !  ,)()$ www.semtech.com/products/ ...

Page 17

... Semtech Ltd., Units 2 & 3, Park Court, Premier Way, Abbey Park Industrial Estate, Romsey, Hampshire, SO51 9DN. EUROPE Tel: +44 (0)1794 527 600 Fax: +44 (0)1794 527 601 ACS - Revision 2.2 August 2010 © Semtech Corp. 1V Motor/LED control timer Page 17 SX8120/21 DATASHEET ISO9001 CERTIFIED www.semtech.com/products/ ...

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