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.
Threshold suffix selector
Pin Configuration
3-Lead SOT23
3-Lead SC70
GND
1
RESET 2
(RESET)
(CAT803)
CAT809
(CAT810)
© 2009 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. Z
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. Z
© 2009 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
© 2009 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. Z
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. Z
© 2009 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)
© 2009 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. Z
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. Z
© 2009 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
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
Doc. No. MD-3004, Rev. Z
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. Z
© 2009 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.
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
Doc. No. MD-3004, Rev. Z
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. Z
10
© 2009 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
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 NiPdAu. 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 ON Semiconductor Sales office.
Top Marking
Device(1)
SOT-23
SOT-23 RoHS
PbSn Finish(2) Matte Finish(2)
SOT-23 RoHS
NiPdAu
Finish(2)(3)
SC70
SC70 RoHS
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.
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
11
Doc. No. MD-3004, Rev. Z
CAT803, CAT809, CAT810
Ordering Part Number
CAT803LSDI(1)
CAT803MSDI
CAT803JSDI
(1)
(1)
CAT803TSDI
(1)
CAT803SSDI
(1)
CAT803RSDI
CAT803ZSDI
(1)
(1)
(1)
CAT803LTBI
(1)
CAT803MTBI
(1)
CAT803JTBI
(1)
CAT803TTBI
(1)
CAT803STBI
CAT803RTBI(1)
(1)
CAT803ZTBI
CAT803LSDI-G
CAT803MSDI-G
CAT803JSDI-G
CAT803TSDI-G
CAT803SSDI-G
CAT803RSDI-G
CAT803ZSDI-G
CAT803LTBI-G
CAT803MTBI-G
CAT803JTBI-G
CAT803TTBI-G
CAT809LSDI(1)
CAT809MSDI
CAT809JSDI
(1)
(1)
CAT809TSDI
(1)
CAT809SSDI
(1)
CAT809RSDI
CAT809ZSDI
(1)
(1)
(1)
CAT809LTBI
(1)
CAT809MTBI
(1)
CAT809JTBI
(1)
CAT809TTBI
CAT809LSDI-G
CAT809MSDI-G
CAT809JSDI-G
CAT809TSDI-G
CAT809SSDI-G
CAT809RSDI-G
CAT809ZSDI-G
CAT809LTBI-G
CAT809MTBI-G
CAT809JTBI-G
CAT809TTBI-G
CAT810LSDI(1)
CAT810MSDI
CAT810JSDI
(1)
CAT810LSDI-G
CAT810MSDI-G
(1)
CAT810JSDI-G
(1)
CAT810TSDI-G
(1)
CAT810SSDI-G
(1)
CAT810RSDI-G
(1)
CAT810ZSDI-G
CAT810TSDI
CAT810SSDI
CAT810RSDI
CAT810ZSDI
(1)
CAT810LTBI
(1)
CAT810MTBI
CAT810LTBI-G
CAT810MTBI-G
(1)
CAT810JTBI-G
(1)
CAT810TTBI-G
(1)
CAT810JTBI
CAT810TTBI
CAT803STBI-G
(1)
CAT809STBI
CAT809STBI-G
CAT810STBI
CAT810STBI-G
CAT803RTBI-G
CAT809RTBI(1)
CAT809RTBI-G
CAT810RTBI(1)
CAT810RTBI-G
CAT803ZTBI-G
(1)
CAT809ZTBI-G
(1)
CAT810ZTBI-G
CAT809ZTBI
CAT810ZTBI
Note:
(1) Contact Factory for availability.
Doc. No. MD-3004, Rev. Z
12
© 2009 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
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
13
Doc. No. MD-3004, Rev. Z
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
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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
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applicable copyright laws and is not for resale in any manner.
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