CAT853CTBI-GT3 Datasheet, PDF (1/9 Pages) ON Semiconductor – 3-Pin Microprocessor Power Supply Supervisors

CAT853, CAT859, CAT863,
CAT869
3-Pin Microprocessor
Power Supply Supervisors
Description
The CAT853, CAT863, CAT859, and CAT869 are supervisory
circuits that monitor power supplies in digital systems.
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.
Industry standard threshold levels are offered to support +3.3 V or
5.0 V systems.
The CAT859 and CAT869 feature a RESET push−pull output
(active low) for the two pinout options.
The CAT853 and CAT863 feature an open drain RESET output
(active low). Both require a pull−up resistor on the RESET output.
Fast transients on the power supply are ignored and the output is
guaranteed to be in the correct state at V_CC levels as low as 1.0 V.
Features
• Precision Monitoring of +3.3 V (−5%, −10%),
5 V (−10% Power Supplies)
• Active Low Reset Output
• Reset Valid down to V_CC = 1.0 V
• 6 mA Power Supply Current
• Power Supply Transient Immunity
• Industrial Temperature Range: −40°C to +85°C
• SOT−23 Package
• These Devices are Pb−Free and are RoHS Compliant
Applications
• Computers, Servers, Laptops and Cable Modems
• Wireless Communications
• Embedded Control Systems
• White Goods
• Power Meters
• Intelligent Instruments
• PDAs and Handheld Equipment
Table 1. THRESHOLD SUFFIX SELECTOR
Nominal Threshold Voltage
Threshold Suffix Designation
4.63 V
L
4.38 V
M
4.20 V
F
4.00 V
J
3.08 V
T
2.93 V
S
2.63 V
R
2.40 V
C
2.32 V
Z
http://onsemi.com
SOT−23
TB SUFFIX
CASE 527AG
PIN CONFIGURATION
CAT853, CAT859
1
RESET
2
GND
3
V_CC
CAT863, CAT869
1
RESET
3
GND
2
V_CC
(Top Views)
MARKING DIAGRAM
XXXMG
G
XXX
M
G
= Specific Device Code
= Date Code
= Pb−Free Package
(*Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
May, 2012 − Rev. 10
Publication Order Number:
CAT853/D