© Semiconductor Components Industries, LLC, 2012
May, 2012 Rev. 32
1Publication Order Number:
CAT803/D
CAT803, CAT809, CAT810
3-Pin Microprocessor
Power Supply Supervisors
Description
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.
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 used by ON 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 CAT803 has an opendrain RESET output (active LOW). The
CAT803 requires a pullup resistor on the reset output.
The CAT809 features a pushpull RESET output (active LOW) and
the CAT810 features a pushpull 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 1.0 V.
The CAT803, CAT809, and CAT810 are available in both the
compact 3pin SOT23 and SC70 packages.
Features
Precision Monitoring of
+5.0 V (5%, 10%, 20%),
+3.3 V (5%, 10%),
+3.0 V (10%) and
+2.5 V (5%) Power Supplies
Offered in Three Output Configurations:
CAT803: OpenDrain Active LOW Reset
CAT809: PushPull Active LOW Reset
CAT810: PushPull Active HIGH Reset
Direct Replacements for the MAX803, MAX809 and MAX810 in
Applications Operating over the Industrial Temperature Range
Reset Valid down to VCC = 1.0 V
6 mA Power Supply Current
Power Supply Transient Immunity
Industrial Temperature Range: 40°C to +85°C
Available in SOT23 and SC70 Packages
These Devices are PbFree and are RoHS Compliant
Applications
Computers, Servers, Laptops, Cable Modems
Wireless Communications
Embedded Control Systems
White Goods, Power Meters
Intelligent Instruments
PDAs and Handheld Equipment
http://onsemi.com
PIN CONFIGURATION
VCC
RESET
(RESET)
GND
1
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
(Top View)
SOT23
TB SUFFIX
CASE 527AG
SC70
SD SUFFIX
CASE 419AB
2
3
CAT803
CAT809
(CAT810)
3Lead SOT23
3Lead SC70
XXXMG
G
XXX = Specific Device Code
M = Month Code
G= PbFree Package
XXXMG
G
MARKING DIAGRAMS
(*Note: Microdot may be in either location)
SOT23 SC70
CAT803, CAT809, CAT810
http://onsemi.com
2
Table 1. THRESHOLD SUFFIX SELECTOR
Nominal Threshold Voltage Threshold Suffix Designation
4.63 V L
4.55 V H
4.38 V M
4.00 V J
3.08 V T
2.93 V S
2.63 V R
2.32 V Z
1.60 V V
Table 2. PIN DESCRIPTIONS
Pin Number
Name Description
CAT803 CAT809 CAT810
1 1 1 GND Ground
22RESET Active LOW reset. RESET is asserted if VCC falls below the reset threshold and
remains low for at least 140 ms 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 140 ms after VCC rises above the reset threshold.
3 3 3 VCC Power supply voltage that is monitored.
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Units
Any pin with respect to ground 0.3 to +6.0 V
Input Current, VCC 20 mA
Output Current, RESET, RESET 20 mA
Rate of Rise, VCC 100 V/ms
Continuous Power Dissipation
Derate 2.2 mW/°C above 70°C (SC70)
Derate 4 mW/°C above 70°C (SOT23)
175
320
mW
Operating Temperature Range 40 to +85 °C
Storage Temperature Range 65 to +105 °C
Lead Soldering Temperature (10 sec) 300 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
CAT803, CAT809, CAT810
http://onsemi.com
3
CAT803
GND
+
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
CAT810
+
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
CAT809
+
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
Figure 1. Block Diagrams
VCC
VCC
VCC
RESET
RESET
RESET
VCC
VCC
VCC
VCC
VCC
VCC
CAT803, CAT809, CAT810
http://onsemi.com
4
Table 4. ELECTRICAL CHARACTERISTICS
(VCC = Full range, TA = 40°C to +85°C, unless otherwise specified. Typical values at TA = +25°C and VCC = 5 V for the L/H/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/V versions.)
Symbol Parameter Conditions Min
Typ
(Note 1) Max Units
VCC Range TA = 0°C to +70°C 1.0 5.5 V
TA = 40°C to +85°C 1.2 5.5
ICC Supply Current TA = 40°C
to +85°C
VCC < 5.5 V, J/L/M/H 8 20 mA
VCC < 3.6 V, R/S/T/Z/V 6 15
VTH Reset Threshold Voltage L Threshold TA = +25°C 4.56 4.63 4.70 V
TA = 40°C to +85°C 4.50 4.75
H Threshold TA = +25°C 4.48 4.55 4.62
TA = 40°C to +85°C 4.43 4.67
M Threshold TA = +25°C 4.31 4.38 4.45
TA = 40°C to +85°C 4.25 4.50
J Threshold TA = +25°C 3.93 4.00 4.06
TA = 40°C to +85°C 3.89 4.10
T Threshold TA = +25°C 3.04 3.08 3.11
TA = 40°C to +85°C 3.00 3.15
S Threshold TA = +25°C 2.89 2.93 2.96
TA = 40°C to +85°C 2.85 3.00
R Threshold TA = +25°C 2.59 2.63 2.66
TA = 40°C to +85°C 2.55 2.70
Z Threshold TA = +25°C 2.28 2.32 2.35
TA = 40°C to +85°C 2.25 2.38
V Threshold TA = +25°C 1.58 1.60 1.62
TA = 40°C to +85°C 1.56 1.64
Reset Threshold Tempco 30 ppm/°C
TDVCC to Reset Delay (Note 2) VCC = VTH to (VTH 100 mV) 20 ms
TRReset Active Timeout Period TA = 40°C to +85°C 140 240 460 ms
VOL RESET Output Voltage Low
(Opendrain active LOW,
CAT803 and pushpull,
active LOW, CAT809)
VCC = VTH min, ISINK = 1.2 mA
CAT803R/S/T/Z, CAT809R/S/T/Z/V
0.3 V
VCC = VTH min, ISINK = 3.2 mA
CAT803J/L/M, CAT809J/L/M/H
0.4
VCC > 1.0 V, ISINK = 50 mA0.3
VOH RESET Output Voltage High
(Pushpull, active LOW,
CAT809)
VCC = VTH max, ISOURCE = 500 mA
CAT809R/S/T/Z/V
0.8 VCC V
VCC = VTH max, ISOURCE = 800 mA
CAT809J/L/M/H
VCC 1.5
VOL RESET Output Voltage Low
(Pushpull, active HIGH,
CAT810)
VCC > VTH max, ISINK = 1.2 mA
CAT810R/S/T/Z
0.3 V
VCC > VTH max, ISINK = 3.2 mA
CAT810J/L/M
0.4
VOH RESET Output Voltage High
(Pushpull, active HIGH,
CAT810)
1.8 V < VCC VTH min,
ISOURCE = 150 mA
0.8 VCC V
1. Production testing done at TA = +25°C; limits over temperature guaranteed by design only.
2. RESET output for the CAT809; RESET output for the CAT810.
CAT803, CAT809, CAT810
http://onsemi.com
5
TYPICAL OPERATING CHARACTERISTICS
(VCC = Full range, TA = 40°C to +85°C, unless otherwise specified. 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.)
Figure 2. Powerup Reset Timeout vs.
Temperature
Figure 3. Supply Current vs. Temperature
(No Load, CAT8xxR/S/T/Z)
TEMPERATURE (°C) TEMPERATURE (°C)
15010050050
160
180
200
220
240
260
10050050
0
4
6
8
10
12
Figure 4. Powerdown Reset Delay vs.
Temperature (CAT8xxR/S/T/Z)
Figure 5. Normalized Reset Threshold vs.
Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
15010050050
0
4
10
14
120100806040200
0.9988
0.9990
0.9992
0.9998
1.0000
1.0002
POWERUP RESET TIMEOUT (mS)
SUPPLY CURRENT (mA)
POWERDOWN RESET DELAY (mS)
NORMALIZED THRESHOLD
150
0.9994
2
2
6
8
12
0.9996
VCC = 3.6 V
VCC = 5.5 V
VCC = 2.5 V
VCC = 5 V
CAT803, CAT809, CAT810
http://onsemi.com
6
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 140 ms after the power supply voltage has risen above the threshold.
0 V
CAT803, CAT809
5 V
0 V
5 V
RESET
(140 ms
minimum)
Reset Timeout Period
CAT810
0 V
5 V
Figure 6. Reset Timing Diagram
TR
TD
VTH
VCC
RESET/OUT
VCC Transient Response
The CAT803/CAT809/CAT810 protect mPs against
brownout failure. Short duration transients of 4 msec or less
and 100 mV amplitude typically do not cause a false RESET.
Figure 7 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 V
CC), the maximum pulse
duration decreases. In this test, the VCC starts from an initial
voltage of 0.5 V above the threshold and drops below it by
the amplitude of the overdrive voltage (VTH VCC).
Figure 7. Maximum Transient Duration without
Causing a Reset Pulse vs. Reset Comparator
Overdrive
RESET OVERDRIVE VTH VCC (mV)
1000100101
0
5
10
15
20
25
30
TRANSIENT DURATION (ms)
CAT809M
CAT809Z
TAMB = 25°C
CAT803, CAT809, CAT810
http://onsemi.com
7
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 >10 kW pulldown resistor between
RESET pin and GND is recommended. For the CAT810, a pullup resistor from RESET pin to VCC is needed.
Figure 8. RESET Valid with VCC Under 1.0 V Figure 9. RESET Valid with VCC Under 1.1 V
CAT809
GND
Power
10 kW
Supply
CAT810
GND
Power
Supply
RESET
VCC
RESET
10 kW
VCC
Bidirectional Reset Pin Interfacing
The CAT809/810 can interface with mP/mC bidirectional reset pins by connecting a 4.7 kW resistor in series with the
CAT809/810 reset output and the mP/mC bidirectional reset pin.
Figure 10. Bidirectional Reset Pin Interfacing
CAT809
GND
Power
Supply
BUF Buffered
RESET
GND
Bidirectional
I/O Pin
mP
(For example:
68HC11)
VCC
VCC
4.7 kW
RESET RESET
INPUT
CAT803 OpenDrain RESET Application
The CAT803 features an opendrain RESET output and
therefore needs a pullup resistor on the output for proper
operation, as shown on Figure 11. An advantage of the
opendrain output includes the ability to “wire AND”
several outputs together to form an inexpensive logic circuit.
It is also possible to have the pullup resistor connected to
a different supply which can be higher than the CAT803 VCC
pin. The value of the pullup resistor is not critical in most
applications, typical values being between 5 kW and 10 kW.
Figure 11. Typical CAT803 OpenDrain
Circuit Configuration
CAT803
GND
Power
Supply
GND
mP
VCC
VCC
5 kW
RESET RESET
INPUT
CAT803, CAT809, CAT810
http://onsemi.com
8
Table 5. ORDERING PART NUMBER
Order Number
Voltage
Top Mark
(Note 4)
Output Reset Package
Quantity
per Reel
(Note 5)
NiPdAu (Note 3) MatteTin NiPdAu MatteTin
CAT803LSDIGT3 CAT803LSDIT3 4.63 V VKA VKL
Open
Drain LOW SC703
3,000
CAT803MSDIGT3 CAT803MSDIT3 4.38 V VKA VKL
CAT803JSDIGT3 CAT803JSDIT3 4.00 V VKA VKL
CAT803TSDIGT3 CAT803TSDIT3 3.08 V VKA VKL
CAT803SSDIGT3 CAT803SSDIT3 2.93 V VKA VKL
CAT803RSDIGT3 CAT803RSDIT3 2.63 V VKA VKL
CAT803ZSDIGT3 CAT803ZSDIT3 2.32 V VKA VKL
CAT803LTBIGT3 CAT803LTBIT3 4.63 V VKA VKL
Open
Drain LOW SOT233
CAT803MTBIGT3 CAT803MTBIT3 4.38 V VKA VKL
CAT803JTBIGT3 CAT803JTBIT3 4.00 V VKA VKL
CAT803TTBIGT3 CAT803TTBIT3 3.08 V VKA VKL
CAT803STBIGT3 CAT803STBIT3 2.93 V VKA VKL
CAT803RTBIGT3 CAT803RTBIT3 2.63 V VKA VKL
CAT803ZTBIGT3 CAT803ZTBIT3 2.32 V VKA VKL
CAT809LSDIGT3 CAT809LSDIT3 4.63 V VLA VLD
CMOS /
PushPull LOW SC703
3,000
CAT809MSDIGT3 CAT809MSDIT3 4.38 V VLA VLD
CAT809JSDIGT3 CAT809JSDIT3 4.00 V VLA VLD
CAT809TSDIGT3 CAT809TSDIT3 3.08 V VLA VLD
CAT809SSDIGT3 CAT809SSDIT3 2.93 V VLA VLD
CAT809RSDIGT3 CAT809RSDIT3 2.63 V VLA VLD
CAT809ZSDIGT3 CAT809ZSDIT3 2.32 V VLA VLD
CAT809LTBIGT3 CAT809LTBIT3 4.63 V VLA VLD
CMOS /
PushPull LOW SOT233
CAT809HTBIGT3 CAT809HTBIT3 4.55 V VLA VLD
CAT809MTBIGT3 CAT809MTBIT3 4.38 V VLA VLD
CAT809JTBIGT3 CAT809JTBIT3 4.00 V VLA VLD
CAT809TTBIGT3 CAT809TTBIT3 3.08 V VLA VLD
CAT809STBIGT3 CAT809STBIT3 2.93 V VLA VLD
CAT809RTBIGT3 CAT809RTBIT3 2.63 V VLA VLD
CAT809ZTBIGT3 CAT809ZTBIT3 2.32 V VLA VLD
CAT809VTBIGT3 CAT809VTBIT3 1.60 V VLA VLD
3. Not recommended for new designs.
4. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents.
5. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
6. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
CAT803, CAT809, CAT810
http://onsemi.com
9
Table 5. ORDERING PART NUMBER
Order Number Quantity
per Reel
(Note 5)
PackageResetOutput
Top Mark
(Note 4)
Voltage
NiPdAu (Note 3)
Quantity
per Reel
(Note 5)
PackageResetOutput
MatteTinNiPdAu
Voltage
MatteTin
CAT810LSDIGT3 CAT810LSDIT3 4.63 V VHA VHT
CMOS /
PushPull HIGH SC703
3,000
CAT810MSDIGT3 CAT810MSDIT3 4.38 V VHA VHT
CAT810JSDIGT3 CAT810JSDIT3 4.00 V VHA VHT
CAT810TSDIGT3 CAT810TSDIT3 3.08 V VHA VHT
CAT810SSDIGT3 CAT810SSDIT3 2.93 V VHA VHT
CAT810RSDIGT3 CAT810RSDIT3 2.63 V VHA VHT
CAT810ZSDIGT3 CAT810ZSDIT3 2.32 V VHA VHT
CAT810LTBIGT3 CAT810LTBIT3 4.63 V VHA VHT
CMOS /
PushPull HIGH SOT233
CAT810MTBIGT3 CAT810MTBIT3 4.38 V VHA VHT
CAT810JTBIGT3 CAT810JTBIT3 4.00 V VHA VHT
CAT810TTBIGT3 CAT810TTBIT3 3.08 V VHA VHT
CAT810STBIGT3 CAT810STBIT3 2.93 V VHA VHT
CAT810RTBIGT3 CAT810RTBIT3 2.63 V VHA VHT
CAT810ZTBIGT3 CAT810ZTBIT3 2.32 V VHA VHT
3. Not recommended for new designs.
4. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents.
5. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
6. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com
CAT803, CAT809, CAT810
http://onsemi.com
10
PACKAGE DIMENSIONS
SOT23, 3 Lead
CASE 527AG01
ISSUE O
E1 E
A1
e
e1
b
D
3
12
c
A
TOP VIEW
SIDE VIEW END VIEW
L1 L
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC TO-236.
SYMBOL MIN NOM MAX
q
θ
A
A1
b
c
D
E
E1
e
e1
L1
L
0.013
0.37
0.085
2.80
2.10
1.20
1.90 BSC
0.40 REF
1.12
0.10
0.50
0.18
3.04
2.64
1.40
0.54 REF
0.95 BSC
0.89
CAT803, CAT809, CAT810
http://onsemi.com
11
PACKAGE DIMENSIONS
SC70, 3 Lead, 1.25x2
CASE 419AB01
ISSUE O
E1
D
A
L
L1 L2
ee
bA1
A2
c
TOP VIEW
SIDE VIEW END VIEW
q1
q1
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-203.
SYMBOL MIN NOM MAX
E
q
θ
A
A1
b
c
D
E
E1
e
L
L2
0.00
0.15
0.08
0.26
1.80
1.80
1.15
0.65 BSC
0.15 BSC
1.10
0.10
0.30
0.22
0.46
2.20
2.40
1.35
L1
0.80
θ1 10º
A2 0.80 1.00
0.42 REF
0.36
2.00
2.10
1.25
0.90
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. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
CAT803/D
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 8002829855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81358171050
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 3036752175 or 8003443860 Toll Free USA/Canada
Fax: 3036752176 or 8003443867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative