CAT8836 Datasheet, PDF (1/7 Pages) ON Semiconductor – NanoPower Supervisory Circuit

CAT8836
NanoPower Supervisory
Circuit
Description
The CAT8836 is a voltage supervisory circuit intended to provide
circuit initialization and start−up timing for DSPs and other
processor−based systems.
When system power comes on, CAT8836’s output once the supply
voltage V_DD becomes higher than 1.1 V. Thereafter, the supervisory
circuit monitors V_DD and keeps the output active as long as V_DD
remains below the threshold voltage of V_TH. After V_DD exceeds the
monitoring threshold an internal timer delays the return of the output
to the inactive state (high) to ensure proper system reset.
The duration of this reset delay is controlled by the CT input. When
CT is connected to GND the reset delay is 10 ms, typical, in duration
and when connected to V_DD, the delay time is typically 200 ms.
Whenever the supply voltage drops below the monitoring threshold
voltage V_TH, the output becomes active (low) again.
Features
• Supply Current: 220 nA (typical)
• Precision Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3.0 V, and
3.3 V
• Power−On Reset Generator with Selectable Delay Time: 10 ms or
200 ms
• Push/Pull RESET (active low) Output
• Manual Reset Input
• Pin−for−Pin Replacement for TPS3836
• TSOT23−5 Package
• Temperature Range: −40°C to +85°C
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Applications Using Low−Power DSPs, Microcontrollers, or
Microprocessors
• Portable− and Battery−Powered Equipment
• Intelligent Instruments
• Wireless Communication Systems
• Automotive Systems
• Notebook Computers
http://onsemi.com
TSOT−23
TD SUFFIX
CASE 419AE
PIN CONNECTIONS
1
CT
VDD
GND
MR
RESET
(Top View)
MARKING DIAGRAM
UTYM
UT = Device Code
Y = Production Year (Last Digit)
M = Production Month: 1−9 (Jan − Sep),
= O, N, D (Oct − Dec)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
1
January, 2011 − Rev. 0
Publication Order Number:
CAT8836/D