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CAT8801TTB-GT3

P1-P3P4-P6P7-P7
© Semiconductor Components Industries, LLC, 2010
May, 2010 − Rev. 4
1 Publication 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 V
CC
= 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)
V
CC
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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2
Table 1. PIN DESCRIPTION
Pin # Name Description
1 GND Ground
2 RESET Active LOW reset. RESET is asserted if V
CC
falls below the reset threshold and remains low for at least
140 ms after V
CC
rises above the reset threshold.
3 V
CC
Power supply voltage that is monitored.
Block Diagram
CAT8801
+
–
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
V
CC
V
CC
RESET
V
CC
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters Ratings Units
Any pin with respect to ground −0.3 to +6.0 V
Input Current, V
CC
20 mA
Output Current, RESET 20 mA
Rate of Rise, V
CC
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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3
Table 3. ELECTRICAL CHARACTERISTICS (Note 1)
(V
CC
= Full range, T
A
= −40°C to +85°C unless otherwise noted. Typical values at T
A
= +25°C.)
Symbol
Parameter Test Conditions Min Typ Max Units
V
CC
Range
T
A
= 0°C to +70°C 1.0 5.5
V
T
A
= −40°C to +85°C 1.2 5.5
I
CC
Supply Current
V
TH
< V
CC
< 5.5 V 200 400
nA
V
TH
< V
CC
< 3.6 V 175 350
V
TH
Reset Threshold Voltage (Note 2)
L
T
A
= +25°C 4.570 4.625 4.681
V
T
A
= −40°C to +85°C 4.500 4.750
M
T
A
= +25°C 4.327 4.380 4.433
T
A
= −40°C to +85°C 4.262 4.498
T
T
A
= +25°C 3.038 3.075 3.112
T
A
= −40°C to +85°C 3.000 3.150
S
T
A
= +25°C 2.890 2.925 2.960
T
A
= −40°C to +85°C 2.850 3.000
R
T
A
= +25°C 2.598 2.630 2.662
T
A
= −40°C to +85°C 2.559 2.701
Z
T
A
= +25°C 2.292 2.320 2.348
T
A
= −40°C to +85°C 2.257 2.383
Y
T
A
= +25°C 2.164 2.190 2.216
T
A
= −40°C to +85°C 2.131 2.249
W
T
A
= +25°C 1.650 1.670 1.690
T
A
= −40°C to +85°C 1.625 1.715
V
T
A
= +25°C 1.561 1.580 1.599
T
A
= −40°C to +85°C 1.537 1.623
V
TH_HYS
Threshold Hysteresis 2 %
Reset Threshold Temperature Coefficient 0.1 mV/°C
V
CC
to Reset Delay V
CC
= V
TH
to (V
TH
– 100 mV) 20 50
ms
Reset Active Timeout Period T
A
= −40°C to +85°C 140 270 460 ms
V
OL
RESET Output Voltage Low I
SINK
= 2 mA 0.4 V
V
OH
RESET Output Voltage High I
SOURCE
= 0.5 mA 0.8 x V
CC
V
1. Production testing done at T
A
= +25°C; limits over temperature guaranteed by design.
2. Measured on falling edge of V
CC
.
P1-P3P4-P6P7-P7

CAT8801TTB-GT3

Mfr. #:
Buy CAT8801TTB-GT3
Manufacturer:
ON Semiconductor
Description:
Supervisory Circuits Push-Pull Low 320mW 1.2V to 5.5V
Lifecycle:
New from this manufacturer.
Delivery:
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