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 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. ■ 6µA power supply current ■ Power supply transient immunity ■ Industrial temperature range: -40ºC to +85ºC ■ Available in RoHS-compliant SOT-23 and SC-70 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 SC-70 packages. For Ordering Information details, see page 11 & 12. Threshold suffix selector Pin Configuration 3-Lead SOT23 3-Lead SC70 GND 1 RESET 2 (RESET) (CAT803) CAT809 (CAT810) © 2010 SCILLC. All rights reserved. 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. MD-3004, Rev. AA 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 VCC Power supply voltage that is monitored. BLOCK DIAGRAMS VCC VCC VCC TOLERANCE BIAS + RESET DIGITAL DELAY – VOLTAGE REFERENCE CAT803 GND VCC VCC VCC TOLERANCE BIAS + DIGITAL DELAY – VOLTAGE REFERENCE RESET CAT809 GND VCC VCC VCC TOLERANCE BIAS + DIGITAL DELAY – VOLTAGE REFERENCE RESET CAT810 GND Doc. No. MD-3004, Rev. AA © 2010 SCILLC. All rights reserved. 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 © 2010 SCILLC. All rights reserved. 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. MD-3004, Rev. AA 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 RESET Output Voltage High (Push-pull, active Low, CAT809) VOH RESET Output Voltage Low (Push-pull, active High, CAT810) VOL RESET Output Voltage High (Push-pull active High, CAT810) VOH 140 Typ(1) Max 30 ppm/ºC 20 µs 240 460 VCC = VTH min, ISINK = 1.2mA CAT803R/S/T/Z, CAT809R/S/T/Z 0.3 VCC = VTH min, ISINK = 3.2mA CAT803J/L/M, CAT809J/L/M 0.4 VCC > 1.0V, ISINK = 50µA 0.3 VCC = VTH max, ISOURCE = 500µA CAT809R/S/T/Z 0.8 VCC VCC = VTH max, ISOURCE = 800µA CAT809J/L/M VCC - 1.5 0.3 VCC > VTH max, ISINK = 3.2mA CAT810J/L/M 0.4 0.8 VCC ms V V VCC > VTH max, ISINK = 1.2mA CAT810R/S/T/Z 1.8V < VCC VTH min, ISOURCE = 150µA Units 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. MD-3004, Rev. AA © 2010 SCILLC. All rights reserved. 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) © 2010 SCILLC. All rights reserved. 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. MD-3004, Rev. AA 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 Reset Timeout Period TR (140ms minimum) TD 5V RESET/OUT 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. MD-3004, Rev. AA © 2010 SCILLC. All rights reserved. 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 I/O Pin (For example: 68HC11) GND Figure 5. Bi-directional Reset Pin Interfacing © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice Doc. No. MD-3004, Rev. AA 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. MD-3004, Rev. AA © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice CAT803, CAT809, CAT810 Package Outline drawings PACKAGE OUTLINE DRAWING SOT-23 3-Lead (TB) SOT-23 3-Lead (TP, TB) D 3 E1 1 E SYMBOL MIN A 0.89 1.12 A1 0.013 0.10 e 0.37 0.50 c 0.085 0.18 D 2.80 3.04 E 2.10 2.64 E1 1.20 1.40 0.95 BSC e1 1.90 BSC L 0.400 REF e1 L1 TOP VIEW θ A MAX b e 2 NOM 0.540 REF 0º 8º θ b L1 A1 L c END VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC TO-236. Doc. No. SOT233-007-01 07/20/07 Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard TO-236. © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice Doc. No. MD-3004, Rev. AA CAT803, CAT809, CAT810 PACKAGE OUTLINE DRAWING SC-70 3-Lead (SD) SC-70 3-Lead (SB, SD) D E1 E SYMBOL MIN A 0.80 A1 0.00 A2 0.80 b 0.15 c 0.08 D 1.80 2.00 2.20 E 1.80 2.10 2.40 E1 1.15 1.25 1.35 e e L e MAX 1.10 0.10 0.90 1.00 0.30 0.22 0.65 BSC 0.26 L1 0.36 0.46 0.42 REF L2 TOP VIEW NOM 0.15 BSC θ 0° 8° θ1 4° 10° θ1 A2 A θ1 b θ L L1 A1 SIDE VIEW c L2 END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-203. Doc. No. SC703-046-01 01/31/08 Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-203. Doc. No. MD-3004, Rev. AA 10 © 2010 SCILLC. All rights reserved. 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 T3 T: Tape & Reel 3: 3000/Reel Lead Finish G: NiPdAu Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. Contact factory for other lead finishes. (3) The device used in the example above is a CAT809STBI-GT3 (Push-Pull / Active Low Output, trip level of 2.85V to 3.00V NiPdAu, Tape and Reel, 3,000/Reel). (4) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. Top Marking Device(1) SOT-23 RoHS NiPdAu Finish(2)(3) SC70 RoHS NiPdAu Finish(2)(3) CAT803x RNYM RN__ CAT809x NRYM NR__ CAT810x NSYM 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 production 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. © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 11 Doc. No. MD-3004, Rev. AA CAT803, CAT809, CAT810 Ordering Part Number Order Number Voltage Output Reset CAT803LSDI-GT3 CAT803MSDI-GT3 CAT803JSDI-GT3 CAT803TSDI-GT3 CAT803SSDI-GT3 CAT803RSDI-GT3 CAT803ZSDI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Open Drain LOW CAT809LSDI-GT3 CAT809MSDI-GT3 CAT809JSDI-GT3 CAT809TSDI-GT3 CAT809SSDI-GT3 CAT809RSDI-GT3 CAT809ZSDI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V CMOS / PushPull LOW CAT810LSDI-GT3 CAT810MSDI-GT3 CAT810JSDI-GT3 CAT810TSDI-GT3 CAT810SSDI-GT3 CAT810RSDI-GT3 CAT810ZSDI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V CMOS / PushPull HIGH CAT803LTBI-GT3 CAT803MTBI-GT3 CAT803JTBI-GT3 CAT803TTBI-GT3 CAT803STBI-GT3 CAT803RTBI-GT3 CAT803ZTBI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Open Drain LOW CAT809LTBI-GT3 CAT809MTBI-GT3 CAT809JTBI-GT3 CAT809TTBI-GT3 CAT809STBI-GT3 CAT809RTBI-GT3 CAT809ZTBI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V CMOS / PushPull LOW CAT810LTBI-GT3 CAT810MTBI-GT3 CAT810JTBI-GT3 CAT810TTBI-GT3 CAT810STBI-GT3 CAT810RTBI-GT3 CAT810ZTBI-GT3 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V CMOS / PushPull HIGH Doc. No. MD-3004, Rev. AA 12 Package Quantity per Reel SC70-3 3,000 SOT-23-3 3,000 © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice CAT803, CAT809, CAT810 Revision History Date Rev. Description 29-Oct-03 N Updated VCC Transient Response text and Figure 2 30-Oct-03 O Updated Power Up Reset Timeout vs. Temperature curve 3-Oct-04 P Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics 23-Mar-04 Q Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Typical Operating Characteristics Updated Package Information 25-Mar-04 R Changed Preliminary designation to Final Updated Max Reset Active Timeout Period in Electrical Characteristics Updated package drawings 5-Oct-04 S Updated top marking table 28-Feb-05 T Updated Features Updated Ordering Information Updated Top Marking 17-Feb-06 Q Updated Typical Operating Characteristics 10-Aug-06 U Updated Features Updated Description Updated Max Reset Active Timeout Period in Electrical Characteristics Updated Figure 1 Updated Package Information Correct Revision Number 17-Oct-06 V Updated Top Marking Updated Detailed Description Adding CAT803 12-Feb-07 W Updated Electrical Characteristics Updated Figure 1 Updated Ordering Information 20-Mar-07 X Updated Detailed Descriptions 31-Jan-08 Y Added MD- to Document Number Added Block Diagrams Updated Package Outline Drawings Updated Example of Ordering Information Updated Ordering Part Number 05-Nov-08 Z Change logo and fine print to ON Semiconductor 18-Mar-10 AA Updated Example of Ordering Information Updated Ordering Part Number © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 13 Doc. No. MD-3004, Rev. AA ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. 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