TPS3809J25 Q1, TPS3809L30 Q1, TPS3809K33 Q1, TPS3809I50 Q1
3 PIN SUPPLY VOLTAGE SUPERVISORS
SGLS142 – DECEMBER 2002
D
Qualification in Accordance With
D
D
D
D
D
AEC-Q100
†
Qualified for Automotive Applications
Customer-Specific Configuration Control
Can Be Supported Along With
Major-Change Approval
†
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Using Human
Body Model (C = 100 pF, R = 1500
Ω)
3-Pin SOT-23 Package
Supply Current of 9
µA
(Typical)
D
Precision Supply Voltage Monitor
D
D
2.5 V, 3 V, 3.3 V, 5 V
Power-On Reset Generator With Fixed
Delay Time of 200 ms
Pin-For-Pin Compatible With MAX 809
TPS3809 . . . DBV PACKAGE
(TOP VIEW)
GND
1
3
RESET
2
VDD
† Contact factory for details. Q100 qualification data available on
request.
description
The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for
DSPs and processor-based systems.
During power-on, RESET is asserted when the supply voltage V
DD
becomes higher than 1.1 V. Thereafter, the
supervisory circuit monitors V
DD
and keeps RESET active as long as V
DD
remains below the threshold voltage
V
IT
. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset.
The delay time, t
d(typ)
= 200 ms, starts after V
DD
has risen above the threshold voltage V
IT
. When the supply
voltage drops below the threshold voltage V
IT
, the output becomes active (low) again. No external components
are required. All the devices of this family have a fixed sense-threshold voltage V
IT
set by an internal voltage
divider.
The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available
in a 3-pin SOT-23. The TPS3809xxxQ-Q1 devices are characterized for operation over a temperature range
of –40°C to 125°C, and are qualified in accordance with AEC-Q100 stress test qualification for integrated
circuits.
typical applications
TPS76333
3.3 V
5V
IN
GND
VDD
TPS3809K33
RESET
GND
RESET
GND
OUT
VDD
TMS320LC54x
D
D
D
D
D
D
D
Applications
Using
Automotive
Microcontrollers, or Microprocessors
Wireless Communication Systems
Battery-Powered Equipment
Programmable Controls
Intelligent Instruments
Industrial Equipment
Automotive Systems
DSPs,
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2002, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
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