© Semiconductor Components Industries, LLC, 2010
May, 2010 − Rev. 4
1Publication Order Number:
CAT8801/D
CAT8801
200 nA Microprocessor
Power Supply Supervisors
Description
The CAT8801 is a supervisory circuit that monitors power supplies
in digital systems and provides a reset signal whenever the system’s
input voltage is below a prescribed minimum level. The CAT8801
replaces popular voltage supervisors such as MAX809 in applications
where operating current is a primary consideration.
CAT8801 generates a reset signal, which is asserted while the power
supply voltage is below a preset threshold level and remains asserted
for at least 140 ms after the power supply level has risen above that
level. Nine industry standard threshold levels are offered to support
+5.0 V, +3.3 V, +3.0 V, +2.5 V and +1.8 V systems. ON Semiconductor’s
floating gate technology, used in programming the trigger thresholds,
makes it possible to quickly offer any custom reset threshold value
should the 9 standard voltage thresholds not meet a system’s needs.
The CAT8801 features a Push−Pull CMOS RESET output (active
LOW) and is fully specified over the industrial temperature range of
−40°C to 85°C.
CAT8801 is available in compact 3−pin SOT23 and SC−70
packages.
Features
•Precision Voltage Monitoring of +1.8 V, +2.5 V, +3.0 V, +3.3 V and
+5.0 V Power Supplies
•Ultra Low 200 nA Supply Current
•±1.2% Voltage Threshold Accuracy
•270 ms Power−On Reset Timeout
•Reset Signal Valid Down to VCC = 1 V
•No External Components Necessary
•High Immunity to Power−Supply Transients
•Industrial Temperature Range: −40°C to +85°C
•Available in RoHS−compliant SOT−23 and SC−70 Packages
Applications
•Computers
•Servers
•Laptops
•Cable Modems
•Wireless Communications
•Embedded Control Systems
•Power Meters
•PDAs and Handheld Equipment
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PIN CONNECTIONS
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
ORDERING INFORMATION
SOT−23
TB SUFFIX
CASE 527AG
SC−70
SD SUFFIX
CASE 419AB
3−Lead SOT−23
3−Lead SC−70
(Top View)
VCC
GND
RESET
CAT8801
L
M
T
S
R
Z
Nominal ThresholdThreshold Suffix
THRESHOLD SUFFIX SELECTOR
Y
W
V
4.625
4.380
3.075
2.925
2.630
2.320
2.190
1.670
1.580
1
2
3
CAT8801
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Table 1. PIN DESCRIPTION
Pin # Name Description
1 GND Ground
2 RESET 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.
3 VCC Power supply voltage that is monitored.
Block Diagram
CAT8801
+
–
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
VCC
VCC
RESET
VCC
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters Ratings Units
Any pin with respect to ground −0.3 to +6.0 V
Input Current, VCC 20 mA
Output Current, RESET 20 mA
Rate of Rise, VCC 100 V/ms
Continuous Power Dissipation mW
Derate 2.2 mW/°C above 70°C (SC−70) 175
Derate 4 mW/°C above 70°C (SOT−23) 320
Operating Temperature Range −40 to +85 °C
Storage Temperature Range −65 to +150 °C
Lead Soldering Temperature (10 seconds) 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.
CAT8801
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Table 3. ELECTRICAL CHARACTERISTICS (Note 1)
(VCC = Full range, TA = −40°C to +85°C unless otherwise noted. Typical values at TA = +25°C.)
Symbol Parameter Test Conditions Min Typ 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 VTH < VCC < 5.5 V 200 400 nA
VTH < VCC < 3.6 V 175 350
VTH Reset Threshold Voltage (Note 2)
L
TA = +25°C 4.570 4.625 4.681 V
TA = −40°C to +85°C 4.500 4.750
M
TA = +25°C 4.327 4.380 4.433
TA = −40°C to +85°C 4.262 4.498
T
TA = +25°C 3.038 3.075 3.112
TA = −40°C to +85°C 3.000 3.150
S
TA = +25°C 2.890 2.925 2.960
TA = −40°C to +85°C 2.850 3.000
R
TA = +25°C 2.598 2.630 2.662
TA = −40°C to +85°C 2.559 2.701
Z
TA = +25°C 2.292 2.320 2.348
TA = −40°C to +85°C 2.257 2.383
Y
TA = +25°C 2.164 2.190 2.216
TA = −40°C to +85°C 2.131 2.249
W
TA = +25°C 1.650 1.670 1.690
TA = −40°C to +85°C 1.625 1.715
V
TA = +25°C 1.561 1.580 1.599
TA = −40°C to +85°C 1.537 1.623
VTH_HYS Threshold Hysteresis 2 %
Reset Threshold Temperature Coefficient 0.1 mV/°C
VCC to Reset Delay VCC = VTH to (VTH – 100 mV) 20 50 ms
Reset Active Timeout Period TA = −40°C to +85°C 140 270 460 ms
VOL RESET Output Voltage Low ISINK = 2 mA 0.4 V
VOH RESET Output Voltage High ISOURCE = 0.5 mA 0.8 x VCC V
1. Production testing done at TA = +25°C; limits over temperature guaranteed by design.
2. Measured on falling edge of VCC.
CAT8801
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TYPICAL OPERATING CHARACTERISTICS
(VCC = Full range, TA = −40°C to +85°C unless otherwise noted. Typical values at TA = +25°C.)
Figure 1. Power−Up Reset Timeout Figure 2. Supply Current vs. Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
1007550250−25−50
200
250
300
350
1007550250−25−50
100
120
140
160
180
200
220
Figure 3. Power−Down Reset Delay vs.
Temperature
Figure 4. Normalized Reset Threshold vs.
Temperature
TEMPERATURE (°C) TEMPERATURE (°C)
1007550250−25−50
2.5
3.0
3.5
4.0
4.5
5.0
1251007550250−25−50
0.996
0.997
0.998
0.999
1.000
1.001
1.002
1.003
tRST (ms)
ISB (nA)
POWER−DOWN RESET DELAY (ms)
NORMALIZED THRESHOLD
VCC = 5.5 V
VCC = 1.8 V
VCC = 5.5 V
VCC = 1.8 V
150
Description
Reset Timing
The reset signal is asserted LOW for the CAT8801 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.
Figure 5. Reset Timing Diagram
5V
0V
5V
0V
Threshold
Voltage
140ms
minimum
Reset Timeout Period
Power
Supply
Voltage
RESET
CAT8801
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PACKAGE DIMENSIONS
SC−70, 3 Lead, 1.25x2
CASE 419AB−01
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
0º 8º
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 4º 10º
A2 0.80 1.00
0.42 REF
0.36
2.00
2.10
1.25
0.90
CAT8801
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PACKAGE DIMENSIONS
SOT−23, 3 Lead
CASE 527AG−01
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
0º 8º
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
CAT8801
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Example of Ordering Information (Note 3)
Prefix Device # Suffix
Company ID
CAT 8801 L
Product
TB − G T10
Trip Level
L: 4.625 V
M: 4.380 V
T: 3.075 V
S: 2.925 V
R: 2.630 V
Z: 2.320 V
Y: 2.190 V
W: 1.670 V
V: 1.580 V
Package
TB: SOT−23 Green
SD: SC70 Green
T: Tape & Reel
3: 3,000 / Reel
Lead Finish
G: NiPdAu
Tape & Reel (Note 6)
Number
8801
(Optional)
ORDERING INFORMATION
Parts and
Threshold Voltage
SOT−23
Green NiPdAu Lead Finish (Note 5)
SC−70
Green NiPdAu Lead Finish
CAT8801L 4.625 CAT8801LTB−GT3 CAT8801LSD−GT3
CAT8801M 4.380 CAT8801MTB−GT3 CAT8801MSD−GT3
CAT8801T 3.075 CAT8801TTB−GT3 CAT8801TSD−GT3
CAT8801S 2.925 CAT8801STB−GT3 CAT8801SSD−GT3
CAT8801R 2.630 CAT8801RTB−GT3 CAT8801RSD−GT3
CAT8801Z 2.320 CAT8801ZTB−GT3 CAT8801ZSD−GT3
CAT8801Y 2.190 CAT8801YTB−GT3 CAT8801YSD−GT3
CAT8801W 1.670 CAT8801WTB−GT3 CAT8801WSD−GT3
CAT8801V 1.580 CAT8801VTB−GT3 CAT8801VSD−GT3
3. All packages are RoHS−compliant (Lead−free, Halogen−free).
4. The device used in the above example is a CAT8801LTB−GT3 (4.625 V, SOT−23, NiPdAu, Tape & Reel, 3,000/Reel).
5. For availability of the various voltage, package and temperature options, please contact your nearest ON Semiconductor sales office.
6. 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.
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.
CAT8801/D
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5773−3850
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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
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Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
