CAT803, CAT809, CAT810 3-Pin Microprocessor Power Supply Supervisors Features DEscription ■ Precision monitoring of +5.0V (-5%, -10%, -20%), +3.3V (-5%, -10%), +3.0V (-10%) and +2.5V (-5%) power supplies The CAT803, CAT809, and CAT810 are supervisory circuits that monitor power supplies in digital systems. The CAT803, CAT809, and CAT810 are direct replacements for the MAX803, MAX809 and MAX810 in applications operating over the industrial temperature range. ■ Offered in three output configurations: - CAT803: Open-Drain Active LOW reset - CAT809: Push-Pull Active LOW reset - CAT810: Push-Pull Active HIGH reset ■ Direct replacements for the MAX803, MAX809 and MAX810 in applications operating over the industrial temperature range ■ Reset valid down to VCC = 1.0V ■ 6µA power supply current These devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, AE2(TM) used by Catalyst Semiconductor, makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels are offered to support +5.0V, +3.3V, +3.0V and +2.5V systems. ■ Power supply transient immunity ■ Industrial temperature range: -40ºC to +85ºC ■ Available in RoHS-compliant SOT-23 and SC70 packages The CAT803 has an open-drain RESET output (active LOW). The CAT803 requires a pull-up resistor on the reset output. The CAT809 features a push-pull RESET output (active LOW) and the CAT810 features a push-pull RESET output (active HIGH). Applications Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at Vcc levels as low as 1.0V. ■ Computers ■ Servers ■ Laptops ■ Cable modems ■ Wireless communications ■ Embedded control systems ■ White goods ■ Power meters ■ Intelligent instruments ■ PDAs and handheld equipment The CAT803, CAT809, and CAT810 are available in both the compact 3-pin SOT-23 and SC70 packages. For Ordering Information details, see page 11. Threshold suffix selector Pin Configuration 3-Lead SOT23 3-Lead SC70 GND 1 RESET 2 (RESET) (CAT803) CAT809 (CAT810) © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 VCC Nominal Threshold Voltage Threshold Suffix Designation 4.63V L 4.38V M 4.00V J 3.08V T 2.93V S 2.63V R 2.32V Z Doc. No. 3004, Rev. X CAT803, CAT809, CAT810 Pin Descriptions Pin Number CAT803 Name Description GND Ground CAT809 CAT810 1 1 1 2 2 — RESET Active LOW reset. RESET is asserted if VCC falls below the reset threshold and remains low for at least 140ms after VCC rises above the reset threshold. — — 2 RESET Active HIGH reset. RESET is asserted if VCC falls below the reset threshold and remains high for at least 140ms after VCC rises above the reset threshold. 3 3 3 Doc. No. 3004, Rev. X VCC Power supply voltage that is monitored. © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 Absolute Maximum Ratings(1) Any pin with respect to ground -0.3V to +6.0V Input Current, VCC 20mA Output Current, RESET, RESET 20mA Rate of Rise, VCC 100V/µs Continuous Power Dissipation Derate 2.2mW/ºC above 70ºC (SC70) 175 mW Derate 4mW/ºC above 70ºC (SOT23) 320 mW Operating Temperature Range -40ºC to +85ºC Storage Temperature Range -65ºC to +105ºC Lead Soldering Temperature (10 sec) 300ºC Note: (1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. Electrical CHARACTERISTICS VCC = Full range, TA = -40ºC to +85ºC unless otherwise noted. Typical values at TA = +25ºC and VCC = 5V for the L/M/J versions, VCC = 3.3V for the T/S versions, VCC = 3V for the R version and VCC = 2.5V for the Z version. Parameter Symbol VCC Range Conditions Min TA = 0ºC to +70ºC 1.0 TA = -40ºC to +85ºC Supply Current Reset Threshold Voltage ICC VTH TA = -40ºC to +85ºC L Threshold M Threshold J Threshold T Threshold S Threshold R Threshold Z Threshold © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Typ 1.2 Max Units 5.5 V 5.5 VCC < 5.5V, J/L/M 8 20 VCC < 3.6V, R/S/T/Z 6 15 4.63 4.70 TA = +25ºC 4.56 TA = -40ºC to +85ºC 4.50 TA = +25ºC 4.31 TA = -40ºC to +85ºC 4.25 TA = +25ºC 3.93 TA = -40ºC to +85ºC 3.89 TA = +25ºC 3.04 TA = -40ºC to +85ºC 3.00 TA = +25ºC 2.89 TA = -40ºC to +85ºC 2.85 TA = +25ºC 2.59 TA = -40ºC to +85ºC 2.55 TA = +25ºC 2.28 TA = -40ºC to +85ºC 2.25 µA V 4.75 4.38 4.45 4.50 4.00 4.06 4.10 3.08 3.11 3.15 2.93 2.96 3.00 2.63 2.66 2.70 2.32 2.35 2.38 Doc No. 3004, Rev. X CAT803, CAT809, CAT810 Electrical CHARACTERISTICS (continued) VCC = Full range, TA = -40ºC to +85ºC unless otherwise noted. Typical values at TA = +25ºC and VCC = 5V for L/M/J versions, VCC = 3.3V for T/S versions, VCC = 3V for R version and VCC = 2.5V for Z version. Parameter Symbol Conditions Min Reset Threshold Tempco VCC to Reset Delay (Note 2) TD VCC = VTH to (VTH - 100 mV) Reset Active Timeout Period TR TA = -40ºC to +85ºC RESET Output Voltage Low (Open-drain active LOW, CAT803 and push-pull, active Low, CAT809) VOL VOH RESET Output Voltage Low (Push-pull, active High, CAT810) VOL RESET Output Voltage High (Push-pull active High, CAT810) Units 30 ppm/ºC 20 µs 240 460 ms VCC = VTH min, ISINK = 3.2mA CAT803J/L/M, CAT809J/L/M 0.4 V VCC > 1.0V, ISINK = 50µA 0.3 VCC = VTH min, ISINK = 1.2mA CAT803R/S/T/Z, CAT809R/S/T/Z RESET Output Voltage High (Push-pull, active Low, CAT809) 140 Typ(1) Max VOH VCC = VTH max, ISOURCE = 500µA CAT809R/S/T/Z 0.8 VCC VCC = VTH max, ISOURCE = 800µA CAT809J/L/M VCC - 1.5 V VCC > VTH max, ISINK = 1.2mA CAT810R/S/T/Z 0.3 VCC > VTH max, ISINK = 3.2mA CAT810J/L/M 0.4 1.8V < VCC VTH min, ISOURCE = 150µA 0.8 VCC V V Notes: (1) Production testing done at TA = +25ºC; limits over temperature guaranteed by design only. (2) RESET output for the CAT809; RESET output for the CAT810. Doc. No. 3004, Rev. X © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 typical operating Characteristics VCC = Full range, TA = -40ºC to +85ºC unless otherwise noted. Typical values at TA = +25ºC and VCC = 5V for L/M/J versions, VCC=3.3V for T/S versions, VCC = 3V for R version and VCC = 2.5V for Z version. SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/Z) 260 12 240 SUPPLY CURRENT (µA) POWER-UP RESET TIMEOUT (mS) POWER-UP RESET TIMEOUT VS. TEMPERATURE VCC=5V 220 200 VCC=2.5V 180 160 -50 0 50 100 10 VCC=3.6V 6 4 2 0 150 VCC=5.5V 8 -50 0 TEMPERATURE (˚C) 12 1 NORMALIZED THRESHOLD POWER-DOWN RESET DELAY (µS) 1.0002 10 8 6 4 2 50 100 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 150 TEMPERATURE (˚C) © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 150 NORMALIZED RESET THRESHOLD VS. TEMPERATURE 14 0 100 TEMPERATURE (˚C) POWER-DOWN RESET DELAY VS. TEMPERATURE (CAT8xxR/S/T/Z) 0 -50 50 0 20 40 60 80 100 120 TEMPERATURE (˚C) Doc No. 3004, Rev. X CAT803, CAT809, CAT810 DETAILED DESCRIPTIONS RESET TIMING The reset signal is asserted LOW for the CAT803/ CAT809 and HIGH for the CAT810 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the threshold. VCC 5V VTH 0V TR (140msec minimum) TD 5V RESET CAT803, CAT809 0V 5V RESET CAT810 0V Figure 1. Reset Timing Diagram VCC Transient Response The CAT803/CAT809/CAT810 protect µPs against brownout failure. Short duration transients of 4µsec or less and 100mV amplitude typically do not cause a false RESET. As the amplitude of the transient goes further below the threshold (increasing VTH - VCC), the maximum pulse duration decreases. In this test, the VCC starts from an initial voltage of 0.5V above the threshold and drops below it by the amplitude of the overdrive voltage (VTH - VCC). TRANSIENT DURATION (µs) Figure 2 shows the maximum pulse duration of negativegoing VCC transients that do not cause a reset condition. Figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive Doc. No. 3004, Rev. X © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 Valid reset with VCC under 1.0V To ensure that the CAT809 RESET pin is in a known state when VCC is under 1.0V, a >10kΩ pull-down resistor between RESET pin and GND is recommended. For the CAT810, a pull-up resistor from RESET pin to VCC is needed. Power Supply Power Supply VCC VCC CAT810 CAT809 10kΩ RESET RESET 10kΩ GND GND Figure 3. RESET Valid with VCC Under 1.0V Figure 4. RESET Valid with VCC Under 1.1V Bi-directional reset pin interfacing The CAT809/810 can interface with µP/µC bi-directional reset pins by connecting a 4.7kΩ resistor in series with the CAT809/810 reset output and the µP/µC bi-directional reset pin. BUF Power Supply Buffered RESET VCC VCC CAT809 µP RESET INPUT RESET GND Bi-directional (For example: 68HC11) GND I/O Pin Figure 5. Bi-directional Reset Pin Interfacing © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc No. 3004, Rev. X CAT803, CAT809, CAT810 Cat803 Open-Drain RESET Application The CAT803 features an open-drain RESET output and therefore needs a pull-up resistor on the output for proper operation, as shown on Figure 6. An advantage of the open-drain output includes the ability to “wire AND” several outputs together to form an inexpensive logic circuit. It is also possible to have the pull-up resistor connected to a different supply which can be higher than the CAT803 VCC pin. The value of the pull-up resistor is not critical in most applications, typical values being between 5kΩ and 10kΩ. Power Supply VCC 5kΩ VCC CAT803 µP RESET RESET INPUT GND GND Figure 6. Typical CAT803 Open-Drain Circuit Configuration Doc. No. 3004, Rev. X © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 Package information Plastic SOT-23 (3-Pin) B E H e e D E c A ө A Inches Min L L Millimeters Max Min Max Plastic SOT-23 (3-Pin) A 0.0350 0.0441 0.89 1.12 A1 0.0005 0.0039 0.013 0.10 B 0.0146 0.0197 0.37 0.50 c 0.0033 0.0071 0.085 0.18 D 0.1102 0.1197 2.80 3.04 E 0.0472 0.0551 1.20 1.40 e 0.0350 0.0406 0.89 1.03 e1 0.0701 0.0807 1.78 2.05 H 0.0827 0.1039 2.10 2.64 ө 0º 8º 0º 8º L 0.0083 0.0161 0.275 0.41 L1 0.0160 0.0270 0.275 0.685 For current Tape and Reel information, download the PDF file from: www.catsemi.com/documents/tapeandreel.pdf Notes: (1) This part is compliant with JEDEC specification TO-236 (2) Die is face up for mold and trim/form (3) Dimensions are exclusive of mold flash and metal burr © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc No. 3004, Rev. X CAT803, CAT809, CAT810 SC-70 (3-Lead) Package information SC70 (3-Lead) b E1 e e D A2 A c L A1 θ L2 L1 Inches Min Max Millimeters Min Max Plastic SC70 (3-Pin) A 0.0315 0.0433 0.80 1.10 A1 0.0000 0.0039 0.00 0.10 A2 0.0315 0.0394 0.80 1.00 b 0.0059 0.00118 0.15 0.30 c 0.0035 0.0071 0.09 0.18 D 0.0709 0.0866 1.80 2.20 E 0.0453 0.0531 1.15 1.35 E1 0.0709 0.0945 1.80 2.40 e 0.0255 BSC 0.65BSC L 0.0102 0.0181 0.26 0.46 L1 0.0108 0.0226 0.275 0.575 For current Tape and Reel information, download the PDF file from: www.catsemi.com/documents/tapeandreel.pdf Notes: (1) This part is compliant with JEDEC specification MO-203. (2) Die is face up for mold. Die is facing down for trim/form. (3) Dimensions are exclusive of mold flash and metal burr. Doc. No. 3004, Rev. X 10 © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 Example of Ordering Information (2) (3) (4) Prefix Device # CAT Suffix 809 S Company ID Device Type 803: Open-Drain / Active Low Output 809: Push-Pull / Active Low Output 810: Push-Pull / Active High Output TBI Trip Level L: 4.63V M: 4.38V J: 4.00V T: 3.08V S: 2.93V R: 2.63V Z: 2.32V – Package Type(1) TBI: SOT-23 Green SDI: SC70 Green G T10 T: Tape & Reel 3: 3000/Reel 10: 10000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is Matte-Tin. Contact factory for other lead finishes. (3) The device used in the example above is a CAT809STBI-GT10 (Push-Pull / Active Low Output, trip level of 2.85V to 3.00V NiPdAu, Tape and Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. Top Marking Device(1) SOT-23 SOT-23 RoHS PbSn Finish(2) Matte Finish(2) SOT-23 RoHS NiPdAu SC70 SC70 RoHS Finish(2)(3) PbSn Finish(2) Matte Finish(2) SC70 RoHS NiPdAu Finish(2)(3) CAT803x N/A RPYM RNYM N/A RP__ RN__ CAT809x PAYM PBYM NRYM PA__ PB__ NR__ CAT810x PCYM PDYM NSYM PC__ PD__ NS__ Notes: (1) All theshold trip level options have the same marking. (2) The “YM” in the SOT-23 package marking indicates the Year and Month of roduction and the “_” in the SC70 package marking indicates the assembly location. (3) All NiPdAu devices will be marked to indicate product type and package. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents. © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 11 Doc No. 3004, Rev. X CAT803, CAT809, CAT810 Ordering Part Number CAT803LSDI CAT803LSDI-G CAT809LSDI CAT809LSDI-G CAT810LSDI CAT810LSDI-G CAT803MSDI CAT803MSDI-G CAT809MSDI CAT809MSDI-G CAT810MSDI CAT810MSDI-G CAT803JSDI CAT803JSDI-G CAT809JSDI CAT809JSDI-G CAT810JSDI CAT810JSDI-G CAT803TSDI CAT803TSDI-G CAT809TSDI CAT809TSDI-G CAT810TSDI CAT810TSDI-G CAT803SSDI CAT803SSDI-G CAT809SSDI CAT809SSDI-G CAT810SSDI CAT810SSDI-G CAT803RSDI CAT803RSDI-G CAT809RSDI CAT809RSDI-G CAT810RSDI CAT810RSDI-G CAT803ZSDI CAT803ZSDI-G CAT809ZSDI CAT809ZSDI-G CAT810ZSDI CAT810ZSDI-G CAT803LTBI CAT803LTBI-G CAT809LTBI CAT809LTBI-G CAT810LTBI CAT810LTBI-G CAT803MTBI CAT803MTBI-G CAT809MTBI CAT809MTBI-G CAT810MTBI CAT810MTBI-G CAT803JTBI CAT803JTBI-G CAT809JTBI CAT809JTBI-G CAT810JTBI CAT810JTBI-G CAT803TTBI CAT803TTBI-G CAT809TTBI CAT809TTBI-G CAT810TTBI CAT810TTBI-G CAT803STBI CAT803STBI-G CAT809STBI CAT809STBI-G CAT810STBI CAT810STBI-G CAT803RTBI CAT803RTBI-G CAT809RTBI CAT809RTBI-G CAT810RTBI CAT810RTBI-G CAT803ZTBI CAT803ZTBI-G CAT809ZTBI CAT809ZTBI-G CAT810ZTBI CAT810ZTBI-G Doc. No. 3004, Rev. X 12 © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 Revision History Date Rev. Reason 10/29/2003 N Updated VCC Transient Response text and Figure 2 10/30/2003 O Updated Power Up Reset Timeout vs. Temperature curve 3/10/2004 P Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics 03/23/2004 Q Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Typical Operating Characteristics Updated Package Information 3/25/2004 R Changed Preliminary designation to Final Updated Max Reset Active Timeout Period in Electrical Characteristics Updated package drawings 5/10/2004 S Updated top marking table 12/28/2005 T Updated Features Updated Ordering Information Updated Top Marking 02/17/2006 Q Updated Typical Operating Characteristics 08/10/2006 U Updated Features Updated Description Updated Max Reset Active Timeout Period in Electrical Characteristics Updated Figure 1 Updated Package Information Correct Revision Number 10/17/2006 V Updated Top Marking Updated Detailed Description Adding CAT803 02/12/2007 W Updated Electrical Characteristics Updated Figure 1 Updated Ordering Information 03/20/2007 X Updated Detailed Descriptions © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 13 Doc No. 3004, Rev. X Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE2 ™ MiniPot™ Quad Mode™ Beyond Memory™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized 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 application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled “Advance Information” or “Preliminary” and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com Document No:3004 Revision: X Issue date: 03.20.07