CAT809MTBI-T10

CAT809, CAT810 3-Pin Microprocessor Power Supply Supervisors FEATURES s Precision monitoring of H GEN FR ALO EE LE A D F R E ETM s Direct replacements for the MAX809 and +5.0 V (+/- 5%, +/- 10%, +/- 20%), +3.3 V (+/- 5%, +/ 10%), +3.0 V (+/- 10%) and +2.5 V (+/- 5%) power supplies s Offered in two output configurations: MAX810 in applications operating over the industrial temperature range s Reset valid down to VCC = 1.0 V s 6 µA power supply current s Power supply transient immunity s Compact 3-pin SOT23 and SC70 packages s Industrial temperature range: -40˚C to +85˚C - CAT809: Active LOW reset - CAT810: Active HIGH reset APPLICATIONS s Computers s Servers s Laptops s Cable modems s Wireless communications s Embedded control systems s White goods s Power meters s Intelligent instruments s PDAs and handheld equipment DESCRIPTION The CAT809 and CAT810 are µP supervisory circuits that monitor power supplies in digital systems. The CAT809 and CAT810 are direct replacements for the MAX809 and MAX810 in applications operating over the industrial temperature range. 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 +5.0 V, +3.3 V, +3.0 V and +2.5 V systems. The CAT809 features a RESET push-pull output (active LOW) and the CAT810 features a RESET push-pull output (active HIGH). 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 1.0 V. The CAT809/810 are fully specified over the industrial temperature range (-40˚C to 85˚C) and are available in compact 3-pin SOT23 and SC70 packages. THRESHOLD SUFFIX SELECTOR Nominal Threshold Voltage 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Threshold Suffix Designation L M J T S R Z 1 PIN CONFIGURATION GND 1 CAT809 (CAT810) RESET 2 (RESET) 3 VCC 3-Lead SOT23 3-Lead SC70 © 2004 by Catalyst Semiconductor, Inc., Patent Pending Characteristics subject to change without notice Doc. No. 3004, Rev. S CAT809, CAT810 ORDERING INFORMATION Ordering Part Number CAT809_EUR-T CAT809_EUR-T10 CAT809_TBI-T CAT809_TBI-T10 CAT809_EXR-T CAT809_EXR-T10 CAT809_SDI-T CAT809_SDI-T10 CAT810_EUR-T CAT810_EUR-T10 CAT810_TBI-T CAT810_TBI-T10 CAT810_EXR-T CAT810_EXR-T10 CAT810_SDI-T CAT810_SDI-T10 RESET Polarity Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Package 3-pin, SOT23 3-pin, SOT23 3-pin, SOT23 Green 3-pin, SOT23 Green 3-pin, SC70 3-pin, SC70 3-pin, SC70 Green 3-pin, SC70 Green 3-pin, SOT23 3-pin, SOT23 3-pin, SOT23 Green 3-pin, SOT23 Green 3-pin, SC70 3-pin, SC70 3-pin, SC70 Green 3-pin, SC70 Green Parts per Reel 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k Insert threshold suffix (L, M, J, T, S, R or Z) into the blank position. Example: CAT809LTBI-T for 4.63 V. TOP MARKING SOT23 CAT809L CAT809M CAT809J CAT809T CAT809S CAT809R CAT809Z CAT810L CAT810M CAT810J CAT810T CAT810S CAT810R CAT810Z AAYM ABYM CWYM ACYM ADYM AFYM CFYM AGYM AHYM AIYM AJYM AKYM ALYM CGYM SOT23 Green DBYM DCYM DAYM DFYM DEYM DDYM DGYM CKYM CLYM CJYM CPYM CNYM CMYM CRYM SC70 FA_ FB_ FG_ FE_ FD_ FC_ FF_ FH_ FJ_ FP_ FM_ FL_ FK_ FN_ SC70 Green GA_ GB_ GG_ GE_ GD_ GC_ GF_ GH_ GJ_ GP_ GM_ GL_ GK_ GN_ Where YM stands for Year and Month for the SOT23 package and the blank is replaced by the assembly location for the SC70 package. Doc. No. 3004, Rev. S 2 Patent Pending CAT809, CAT810 PIN DESCRIPTIONS Pin Number CAT809 1 2 — CAT810 1 — 2 GND RESET RESET Ground 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. 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. Power supply voltage that is monitored. Name Description 3 3 VCC Patent Pending 3 Doc. No. 3004, Rev. S CAT809, CAT810 ABSOLUTE MAXIMUM RATINGS* Any pin with respect to ground .......... -0.3 V to +6.0 V Input Current, VCC ............................................. 20 mA Output Current, RESET, RESET ...................... 20 mA Rate of Rise, VCC ............................................................. 100 V/µs Continuous Power Dissipation Derate 2.2mW/˚C above 70˚C (SC70) ......... 175 mW Derate 4mW/˚C above 70˚C (SOT23) ......... 320 mW ELECTRICAL CHARACTERISTICS VCC = Full range, TA = -40°C to +85°C unless otherwise noted. Typical values at TA = +25˚C and VCC = 5 V for the L/M/J versions, VCC = 3.3 V for the T/S versions, VCC = 3 V for the R version and VCC = 2.5 V for the Z version. Parameter VCC Range Symbol Conditions TA = 0˚C to +70˚C TA = -40˚C to +85˚C Supply Current ICC TA = -40˚C to +85˚C VCC < 5.5 V, J/L/M VCC < 3.6 V, R/S/T/Z TA = +25˚C TA = -40˚C to +85˚C TA = +25˚C TA = -40˚C to +85˚C TA = +25˚C J Threshold TA = -40˚C to +85˚C TA = +25˚C TA = -40˚C to +85˚C S Threshold TA = +25˚C TA = -40˚C to +85˚C TA = +25˚C R Threshold TA = -40˚C to +85˚C TA = +25˚C TA = -40˚C to +85˚C 4.56 4.50 4.31 4.25 3.93 3.89 3.04 3.00 2.89 2.85 2.59 2.55 2.28 2.25 2.32 2.63 2.93 3.08 4.00 4.38 Min 1.0 1.2 8 6 4.63 Typ Max 5.5 5.5 20 15 4.70 4.75 4.45 4.50 4.06 4.10 3.11 3.15 2.96 3.00 2.66 2.70 2.35 2.38 Units Operating Temperature Range ........... -40°C to +85°C Storage Temperature Range ............ -65°C to +105°C Lead Soldering Temperature (10 sec) .............. 300°C *COMMENT 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. V µA L Threshold M Threshold Reset Threshold Voltage VTH T Threshold V Z Threshold Doc. No. 3004, Rev. S 4 Patent Pending CAT809, CAT810 ELECTRICAL CHARACTERISTICS (continued) VCC = Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C and VCC = 5 V for L/M/J versions, VCC = 3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version. Parameter Reset Threshold Tempco VCC to Reset Delay (Note 2) Reset Active Timeout Period VCC = VTH to (VTH - 100 mV) TA = -40˚C to +85˚C VCC = VTH min, ISINK = 1.2 mA RESET Output Voltage Low (Push-pull, active LOW, CAT809) CAT809R/S/T/Z VOL VCC = VTH min, ISINK = 3.2 mA CAT809J/L/M VCC > 1.0 V, ISINK = 50 µA VCC = VTH max, ISOURCE = 500 µA RESET Output Voltage High (Push-pull, active LOW, CAT809) VOH CAT809R/S/T/Z VCC = VTH max, ISOURCE = 800 µA CAT809J/L/M VCC > VTH max, ISINK = 1.2 mA RESET Output Voltage Low (Push-pull, active HIGH, CAT810) RESET Output Voltage High (Push-pull active HIGH, CAT810) CAT810R/S/T/Z VOL VCC > VTH max, ISINK = 3.2 mA CAT810J/L/M VOH 1.8 V < VCC ≤ VTH min, ISOURCE = 150 µA 0.8 VCC V 0.4 VCC - 1.5 0.3 V 0.8 VCC V 0.4 0.3 140 Symbol Conditions Min Typ(1) 30 20 240 Max Units ppm/˚C µs 400 0.3 ms V Note 1: Production testing done at TA = +25˚C; limits over temperature guaranteed by design only. Note 2: RESET output for the CAT809; RESET output for the CAT810 Patent Pending 5 Doc. No. 3004, Rev. S CAT809, CAT810 TYPICAL OPERATING CHARACTERISTICS VCC = Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C and VCC = 5 V for L/M/J versions, VCC=3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version. POWER-UP RESET TIMEOUT VS. TEMPERATURE SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/Z) 12 VCC=5.5V POWER-UP RESET TIMEOUT (mS) 260 SUPPLY CURRENT (µA) 240 220 200 VCC=5V 10 8 6 4 2 0 VCC=3.6V VCC=2.5V 180 160 -50 0 50 100 150 -50 0 50 100 150 TEMPERATURE (˚C) TEMPERATURE (˚C) POWER-DOWN RESET DELAY VS. TEMPERATURE (CAT8xxR/S/T/Z) NORMALIZED RESET THRESHOLD VS. TEMPERATURE 1.0002 POWER-DOWN RESET DELAY (µS) 14 NORMALIZED THRESHOLD 0 50 100 150 12 10 8 6 4 2 0 -50 1 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 0 20 40 60 80 100 120 TEMPERATURE (˚C) TEMPERATURE (˚C) Doc. No. 3004, Rev. S 6 Patent Pending CAT809, CAT810 DETAILED DESCRIPTIONS RESET TIMING The reset signal is asserted LOW for the 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. Power 5V Supply Voltage 0V Threshold Voltage Reset Timeout Period 140ms minimum RESET 5V 0V 5V CAT809 RESET 0V CAT810 FIGURE 1. RESET TIMING DIAGRAM VCC TRANSIENT RESPONSE The CAT809/810 protect µPs against brownout failure. Short duration transients of 4µsec or less and 100 mV amplitude typically do not cause a false RESET. Figure 2 shows the maximum pulse duration of negative-going VCC transients that do not cause a reset condition. 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). 30 TRANSIENT DURATION [µs) 25 20 15 10 5 0 1 10 CAT809M TAMB = 25°C CAT809Z 100 1000 RESET OVERDRIVE VTH - VCC [mV] FIGURE 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive Patent Pending 7 Doc. No. 3004, Rev. S CAT809, CAT810 VALID RESET WITH VCC UNDER 1.0 V To ensure that the CAT809 RESET pin is in a known state when VCC is under 1.0 V, a 100 kΩ pull-down resistor between RESET pin and GND is recommended; the value is not critical. For the CAT810, a pull-up resistor from RESET pin to VCC is needed. Power Supply VCC Power Supply VCC CAT810 CAT809 RESET GND 100kΩ GND RESET 100kΩ FIGURE 3. RESET Valid with VCC Under 1.0 V RESET FIGURE 4. RESET Valid with VCC Under 1.1 V BI-DIRECTIONAL RESET PIN INTERFACING The CAT809/810 can interface with µP/µC bi-directional reset pins by connecting a 4.7 kΩ resistor in series with the CAT809/810 reset output and the µP/µC bi-directional reset pin. BUF Power Supply VCC Buffered RESET CAT809 4.7kΩ RESET GND Bi-directional I/O Pin µP RESET INPUT GND (For example: 68HC11) FIGURE 5. Bi-directional Reset Pin Interfacing Doc. No. 3004, Rev. S 8 Patent Pending CAT809, CAT810 OTHER SUPERVISORY PRODUCTS Function With 16k Bit Serial EEPROM Memory Watchdog Timer Manual Reset Input Active Low Reset Active High Reset Dual Polarity Reset Outputs Package 8-pin DIP and SOIC 8-pin DIP and SOIC 3-pin SOT23 and SC70 3-pin SOT23 and SC70 4-pin SOT143 4-pin SOT143 CAT1161/3 CAT1162 CAT809 CAT810 CAT811 CAT812 Patent Pending 9 Doc. No. 3004, Rev. S CAT809, CAT810 PACKAGE INFORMATION Plastic SOT-23 (3-Pin) Min Inches Max Millimeters Min Max Plastic SOT-23 (3-Pin) A A1 B c D E e B 0.0350 0.0005 0.0146 0.0033 0.1102 0.0472 0.0350 0.0701 0.0827 0° 0.0083 0.0160 0.0441 0.0039 0.0197 0.0071 0.1197 0.0551 0.0406 0.0807 0.1039 8° 0.0161 0.0270 0.89 0.013 0.37 0.085 2.80 1.20 0.89 1.78 2.10 0° 0.275 0.275 1.12 0.10 0.50 0.18 3.04 1.40 1.03 2.05 2.64 8° 0.41 0.685 e1 H ∝ L E H L1 NOTE: 1. THIS PART IS COMPLIANT WITH JEDEC SPECIFICATION TO-236AB 2. DIE IS FACE UP FOR MOLD AND TRIM/FORM e 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR e1 D E c A A1 L1 L ∝ Doc. No. 3004, Rev. S 10 Patent Pending CAT809, CAT810 PACKAGE INFORMATION SC-70 Package (3-Lead) Min Inches Max Millimeters Min Max Plastic SC-70 (3-Pin) A A1 A2 b c 0.0315 0.0000 0.0315 0.0059 0.0035 0.0709 0.0453 0.0709 0.0433 0.0039 0.0394 0.00118 0.0071 0.0866 0.0531 0.0945 0.80 0.00 0.80 0.15 0.09 1.80 1.15 1.80 1.10 0.10 1.00 0.30 0.18 2.20 1.35 2.40 e b D E E1 e L 0.00255 BSC 0.0102 0.0108 0.0181 0.0226 0.65BSC 0.26 0.275 0.46 0.575 2 1 E E1 3 L1 NOTE: 1. THIS PART IS COMPLIANT WITH EIAJ SPECIFICATION SC-70 2. DIE IS FACE UP FOR MOLD. DIE IS FACING DOWN FOR TRIM/FORM 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR D E A2 A c A1 L1 L Patent Pending 11 Doc. No. 3004, Rev. S CAT809, CAT810 REVISION HISTORY Date 10/29/2003 10/30/2003 3/10/2004 Rev. N O P Reason Updated VCC Transient Response text and Figure 2 Updated Power Up Reset Timeout vs. Temperature curve Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Typical Operating Characteristics Updated Package Information Changed Preliminary designation to Final Updated Max Reset Active Timout Period in Electrical Characteristics Updated package drawings Updated top marking table 03/23/2004 Q 3/25/2004 R 5/10/2004 S Doc. No. 3004, Rev. S 12 Patent Pending Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE2 ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. 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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 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com Publication #: Revison: Issue date: 3004 S 5/10/04 Patent Pending