CAT803, CAT809, CAT810
3-Pin Microprocessor Power Supply Supervisors
FeATureS
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DESCRIPTIOn
The CAT803, CAT809, and CAT80 are supervisory circuits that monitor power supplies in digital systems. The CAT803, CAT809, and CAT80 are direct replacements for the MAX803, MAX809 and MAX80 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 40 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. 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). 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 .0V. The CAT803, CAT809, and CAT80 are available in both the compact 3-pin SOT-23 and SC70 packages.
Precision monitoring of +5.0V (-5%, -10%, -20%), +3.3V (-5%, -10%), +3.0V (-10%) and +2.5V (-5%) power supplies 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 Power supply transient immunity Industrial temperature range: -40ºC to +85ºC Available in RoHS-compliant SOT-23 and SC70 packages
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APPLICATIOnS
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Computers Servers Laptops Cable modems Wireless communications embedded control systems White goods Power meters Intelligent instruments PDAs and handheld equipment
for Ordering Information details, see page 11.
THRESHOLD SuffIX SELECTOR
nominal Threshold Voltage 4.63V 4.38V 4.00V 3.08V
VCC
PIn COnfIGuRATIOn
3-Lead SOT23 3-Lead SC70
GND 1
Threshold Suffix Designation L M J T S R Z
RESET 2 (RESET)
(CAT803) CAT809 (CAT810)
3
2.93V 2.63V 2.32V
© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
Doc. No. 3004, Rev. X
CAT803, CAT809, CAT810 PIn DESCRIPTIOnS
Pin number CAT803 2 CAT809 CAT810 2 — GND Ground RESET Active LOW reset. RESET is asserted if VCC falls below the reset threshold and remains low for at least 40ms after VCC rises above the reset threshold. RESET Active HIGH reset. RESET is asserted if VCC falls below the reset threshold and remains high for at least 40ms after VCC rises above the reset threshold. VCC Power supply voltage that is monitored. name Description
—
—
2
3
3
3
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© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT803, CAT809, CAT810
AbSOLuTE MAXIMuM RATInGS(1) Any pin with respect to ground Input Current, VCC Output Current, RESET, RESET Rate of Rise, VCC Continuous Power Dissipation Derate 2.2mW/ºC above 70ºC (SC70) Derate 4mW/ºC above 70ºC (SOT23) Operating Temperature Range Storage Temperature Range Lead Soldering Temperature (0 sec)
note: () 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.
-0.3V to +6.0V 20mA 20mA 00V/µs 75 mW 320 mW -40ºC to +85ºC -65ºC to +05ºC 300ºC
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 VCC Range Supply Current Reset Threshold Voltage ICC VTH Symbol Conditions TA = 0ºC to +70ºC TA = -40ºC to +85ºC TA = -40ºC to +85ºC L Threshold M Threshold J Threshold T Threshold S Threshold R Threshold Z Threshold VCC < 5.5V, J/L/M VCC < 3.6V, R/S/T/Z TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC TA = +25ºC TA = -40ºC to +85ºC 4.56 4.50 4.3 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 .0 .2 8 6 4.63 Typ Max 5.5 5.5 20 5 4.70 4.75 4.45 4.50 4.06 4.0 3. 3.5 2.96 3.00 2.66 2.70 2.35 2.38 V µA units V
© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
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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 Reset Threshold Tempco VCC to Reset Delay (Note 2) Reset Active Timeout Period RESET Output Voltage Low (Open-drain active LOW, CAT803 and push-pull, active LOW, CAT809) RESET Output Voltage High (Push-pull, active LOW, CAT809) RESET Output Voltage Low (Push-pull, active HIGH, CAT80) RESET Output Voltage High (Push-pull active HIGH, CAT80) VOH VOL VOH VOL TD TR VCC = VTH to (VTH - 00 mV) TA = -40ºC to +85ºC VCC = VTH min, ISINK = .2mA CAT803R/S/T/Z, CAT809R/S/T/Z VCC = VTH min, ISINK = 3.2mA CAT803J/L/M, CAT809J/L/M VCC > .0V, ISINK = 50µA VCC = VTH max, ISOURCE = 500µA CAT809R/S/T/Z VCC = VTH max, ISOURCE = 800µA CAT809J/L/M VCC > VTH max, ISINK = .2mA CAT80R/S/T/Z VCC > VTH max, ISINK = 3.2mA CAT80J/L/M .8V < VCC VTH min, ISOURCE = 50µA 0.8 VCC 0.8 VCC VCC - .5 0.3 0.4 V V 0.4 0.3 V 40 Symbol Conditions Min Typ(1) Max 30 20 240 460 units ppm/ºC µs ms
V
notes: () 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
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© 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.
POWER-UP RESET TIMEOUT VS. TEMPERATURE SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/Z) 12
POWER-UP RESET TIMEOUT (mS)
260
SUPPLY CURRENT (µA)
240 220 200 180 160
VCC=5V
10 8 6 4 2 0 -50 0
VCC=5.5V
VCC=3.6V
VCC=2.5V
-50
0
50
100
150
50
100
150
TEMPERATURE (˚C)
TEMPERATURE (˚C)
POWER-DOWN RESET DELAY VS. TEMPERATURE (CAT8xxR/S/T/Z)
NORMALIZED RESET THRESHOLD VS. TEMPERATURE 1.0002 1 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 0 20 40 60 80 100 120
POWER-DOWN RESET DELAY (µS)
14 12 10 8 6 4 2 0 -50 0 50 100 150
TEMPERATURE (˚C)
NORMALIZED THRESHOLD
TEMPERATURE (˚C)
© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
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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 CAT80 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 40ms after the power supply voltage has risen above the threshold.
5V VTH 0V TD 5V RESET 0V TR (140msec minimum)
VCC
CAT803, CAT809
5V RESET 0V CAT810
figure 1. Reset Timing Diagram VCC TRAnSIEnT RESPOnSE The CAT803/CAT809/CAT80 protect µPs against brownout failure. Short duration transients of 4µsec or less and 00mV amplitude typically do not cause a false RESET. Figure 2 shows the maximum pulse duration of negativegoing 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).
figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive
Doc. No. 3004, Rev. X
TRANSIENT DURATION (µs)
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© 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 VCC
Power Supply VCC
CAT809
RESET GND 10kΩ
CAT810
RESET
10kΩ
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 CAT809/80 can interface with µP/µC bi-directional reset pins by connecting a 4.7kΩ resistor in series with the CAT809/80 reset output and the µP/µC bi-directional reset pin.
BUF Power Supply VCC VCC
Buffered RESET
CAT809
RESET GND
Bi-directional I/O Pin
µP
RESET INPUT GND
(For example: 68HC11)
figure 5. bi-directional Reset Pin Interfacing
© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
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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 5k VCC
CAT803
RESET GND RESET INPUT
µP
GND
figure 6. Typical CAT803 Open-Drain Circuit Configuration
Doc. No. 3004, Rev. X
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© 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 c A
E
ө
A L L
Inches Min A A B c D E e e H ө L L 0.0350 0.0005 0.046 0.0033 0.02 0.0472 0.0350 0.070 0.0827 0º 0.0083 0.060 Max 0.044 0.0039 0.097 0.007 0.97 0.055 0.0406 0.0807 0.039 8º 0.06 0.0270
Millimeters Min 0.89 0.03 0.37 0.085 2.80 .20 0.89 .78 2.0 0º 0.275 0.275 Max .2 0.0 0.50 0.8 3.04 .40 .03 2.05 2.64 8º 0.4 0.685 For current Tape and reel information, download the PDf file from: www.catsemi.com/documents/tapeandreel.pdf
Plastic SOT-23 (3-Pin)
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
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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 θ L2
A1
L L1
Inches Min A A A2 b c D E E1 e L L 0.035 0.0000 0.035 0.0059 0.0035 0.0709 0.0453 0.0709 0.002 0.008 Max 0.0433 0.0039 0.0394 0.008 0.007 0.0866 0.053 0.0945 0.08 0.0226
Millimeters Min 0.80 0.00 0.80 0.5 0.09 .80 .5 .80 0.26 0.275 Max .0 0.0 .00 0.30 0.8 2.20 .35 2.40 0.46 0.575 For current Tape and reel information, download the PDf file from: www.catsemi.com/documents/tapeandreel.pdf
Plastic SC70 (3-Pin)
0.0255 BSC
0.65BSC
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
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© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT803, CAT809, CAT810 EXAMPLE Of ORDERInG InfORMATIOn (2) (3) (4)
Prefix CAT Device # 809 Suffix S TBI – G T10
Company ID Device Type 803: Open-Drain / Active Low Output 809: Push-Pull / Active Low Output 810: Push-Pull / Active High Output
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
T: Tape & Reel 3: 3000/Reel 10: 10000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu
notes: () 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-GT0 (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
SOT-23 SOT-23 RoHS PbSn Finish(2) Matte Finish(2) N/A PAYM PCYM RPYM PBYM PDYM SOT-23 RoHS niPdAu SC70 SC70 RoHS Finish(2)(3) PbSn Finish(2) Matte Finish(2) RNYM NRYM NSYM N/A PA__ PC__ RP__ PB__ PD__ SC70 RoHS niPdAu Finish(2)(3) RN__ NR__ NS__
Device(1) CAT803x CAT809x CAT80x
notes: () 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
Doc No. 3004, Rev. X
CAT803, CAT809, CAT810 ORDERInG PART nuMbER
CAT803LSDI CAT803MSDI CAT803JSDI CAT803TSDI CAT803SSDI CAT803RSDI CAT803ZSDI CAT803LTBI CAT803MTBI CAT803JTBI CAT803TTBI CAT803STBI CAT803RTBI CAT803ZTBI CAT803LSDI-G CAT803MSDI-G CAT803JSDI-G CAT803TSDI-G CAT803SSDI-G CAT803RSDI-G CAT803ZSDI-G CAT803LTBI-G CAT803MTBI-G CAT803JTBI-G CAT803TTBI-G CAT803STBI-G CAT803RTBI-G CAT803ZTBI-G CAT809LSDI CAT809MSDI CAT809JSDI CAT809TSDI CAT809SSDI CAT809RSDI CAT809ZSDI CAT809LTBI CAT809MTBI CAT809JTBI CAT809TTBI CAT809STBI CAT809RTBI CAT809ZTBI CAT809LSDI-G CAT809MSDI-G CAT809JSDI-G CAT809TSDI-G CAT809SSDI-G CAT809RSDI-G CAT809ZSDI-G CAT809LTBI-G CAT809MTBI-G CAT809JTBI-G CAT809TTBI-G CAT809STBI-G CAT809RTBI-G CAT809ZTBI-G CAT80LSDI CAT80MSDI CAT80JSDI CAT80TSDI CAT80SSDI CAT80RSDI CAT80ZSDI CAT80LTBI CAT80MTBI CAT80JTBI CAT80TTBI CAT80STBI CAT80RTBI CAT80ZTBI CAT80LSDI-G CAT80MSDI-G CAT80JSDI-G CAT80TSDI-G CAT80SSDI-G CAT80RSDI-G CAT80ZSDI-G CAT80LTBI-G CAT80MTBI-G CAT80JTBI-G CAT80TTBI-G CAT80STBI-G CAT80RTBI-G CAT80ZTBI-G
Doc. No. 3004, Rev. X
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© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT803, CAT809, CAT810 REVISIOn HISTORy
Date 0/29/2003 0/30/2003 3/0/2004 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 Timeout Period in Electrical Characteristics Updated package drawings Updated top marking table Updated Features Updated Ordering Information Updated Top Marking Updated Typical Operating Characteristics Updated Features Updated Description Updated Max Reset Active Timeout Period in Electrical Characteristics Updated Figure Updated Package Information Correct Revision Number Updated Top Marking Updated Detailed Description Adding CAT803 Updated Electrical Characteristics Updated Figure Updated Ordering Information Updated Detailed Descriptions
03/23/2004
Q
3/25/2004
R
5/0/2004 2/28/2005
S T
02/7/2006 08/0/2006
Q U
0/7/2006
V
02/2/2007
W
03/20/2007
X
© 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
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Doc No. 3004, Rev. X
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Document No: 3004 Revision: X Issue date: 03.20.07
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