CAT8801 Datasheet, PDF (1/7 Pages) ON Semiconductor – 200 nA Microprocessor Power Supply Supervisors Ultra Low 200 nA Supply Current

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
http://onsemi.com
SOT−23
TB SUFFIX
CASE 527AG
SC−70
SD SUFFIX
CASE 419AB
PIN CONNECTIONS
GND
RESET
1
CAT8801
2
3
V_CC
3−Lead SOT−23
3−Lead SC−70
(Top View)
THRESHOLD SUFFIX SELECTOR
Threshold Suffix
Nominal Threshold
L
4.625
M
4.380
T
3.075
S
2.925
R
2.630
Z
2.320
Y
2.190
W
1.670
V
1.580
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
May, 2010 − Rev. 4
Publication Order Number:
CAT8801/D