Monitor. TPS3824-Q1 Datasheet

TPS3824-Q1 Datasheet PDF


Part

TPS3824-Q1

Description

Voltage Monitor

Manufacture

etcTI

Page 23 Pages
Datasheet
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TPS3824-Q1 Datasheet
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TPS3820-Q1, TPS3823-Q1, TPS3824-Q1, TPS3825-Q1, TPS3828-Q1
SGLS143D – DECEMBER 2002 – REVISED JULY 2019
TPS382x-xx-Q1 Voltage Monitor With Watchdog Timer
1 Features
1 Qualified for automotive applications
• AEC-Q100 Qualified With the Following Results:
– Device temperature grade 1: –40°C to 125°C
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4B
• ESD protection exceeds 2000 V Per MIL-STD-
883, Method 3015; using human body model (C =
100 pF, R = 1500 Ω)
• Power-on reset generator with fixed delay time of
200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms
(TPS3820-xx-Q1)
• Manual reset input (TPS3820/3/5/8-xx-Q1)
• Reset output available in active-low
(TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-
xx-Q1), and open drain (TPS3828-xx-Q1)
• Supply voltage supervision range:
2.5 V, 3 V, 3.3 V, 5 V
• Watchdog timer (TPS3820/3/4/8-xx-Q1)
• Supply current of 15 μA (Typical)
• 5-Pin SOT-23 package
• Temperature range: 40°C to 125°C
2 Applications
• Automotive DSPs, microcontrollers, or
microprocessors
• Industrial equipment
• Programmable controls
• Automotive systems
• Portable and battery-powered equipment
• Intelligent instruments
• Wireless communications systems
3 Description
For all new designs with TPS3820-xx-Q1, use the
TPS3820-xxQPDBVRQ1 part number. The TPS3820-
xxQP is functionally equivalent and a replacement to
the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not
recommended for new designs (NRND).
The TPS382x-xx-Q1 family of supervisors provide
circuit initialization and timing supervision, primarily
for DSP and processor-based systems. During power
on, RESET asserts when the supply voltage VDD
becomes greater than 1.1 V. Thereafter, the supply
voltage supervisor monitors VDD and keeps RESET
active low as long as VDD remains below the
threshold voltage, VIT. An internal timer delays the
return of the output to the inactive state (high) to
ensure proper system reset. The delay time, td, starts
after VDD has risen above the threshold voltage VIT.
When the supply voltage drops below the threshold
voltage VIT, the output becomes active (low) again.
No external components are required. All the devices
of this family have a fixed-sense threshold voltage,
VIT–, set by an internal voltage divider. The TPS382x-
xx-Q1 family also offers watchdog time out options of
200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-
xx-Q1).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS382x-xx-Q1
SOT-23 (5)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Schematic
3.3 V
Normalized Input Threshold Voltage vs
Free-Air Temperature
1.001
VDD
100 nF
VDD
1
RESET
TPS3823-33-Q1
MR WDI
RESET
MSP430C325
I/O
0.999
0.998
0.997
GND
GND
0.996
0.995
−40
−15
10
35 60
85
TA − Free-Air Temperature − °C
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS3824-Q1 Datasheet
TPS3820-Q1, TPS3823-Q1, TPS3824-Q1, TPS3825-Q1, TPS3828-Q1
SGLS143D – DECEMBER 2002 – REVISED JULY 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements ................................................ 6
7.7 Switching Characteristics .......................................... 6
7.8 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................... 9
8.4 Device Functional Modes........................................ 10
9 Application and Implementation ........................ 11
9.1 Application Information............................................ 11
9.2 Typical Applications ................................................ 11
10 Power Supply Recommendations ..................... 12
11 Layout................................................................... 13
11.1 Layout Guidelines ................................................. 13
11.2 Layout Example .................................................... 13
12 Device and Documentation Support ................. 14
12.1 Documentation Support ........................................ 14
12.2 Receiving Notification of Documentation Updates 14
12.3 Community Resources.......................................... 14
12.4 Trademarks ........................................................... 14
12.5 Electrostatic Discharge Caution ............................ 14
12.6 Glossary ................................................................ 14
13 Mechanical, Packaging, and Orderable
Information ........................................................... 15
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (December 2015) to Revision D
Page
• For all new designs, use the TPS3820-33QPDBVRQ1 and TPS3820-50QPDBVRQ1.TPS3820-xxQP is functionally
equivalent and a replacement to the TPS3820xxQ................................................................................................................ 1
Changes from Revision B (June 2008) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Added AEC-Q100 Qualified information and Temperature Range to Features .................................................................... 1
• Added -Q1 to all applicable part numbers ............................................................................................................................. 1
• Added FIXED DELAY TIME column to table ........................................................................................................................ 3
2 Submit Documentation Feedback
Copyright © 2002–2019, Texas Instruments Incorporated
Product Folder Links: TPS3820-Q1 TPS3823-Q1 TPS3824-Q1 TPS3825-Q1 TPS3828-Q1


Features Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TPS3820-Q1, TPS3823-Q1, TPS3824 -Q1, TPS3825-Q1, TPS3828-Q1 SGLS143D DECEMBER 2002 – REVISED JULY 2019 T PS382x-xx-Q1 Voltage Monitor With Watch dog Timer 1 Features •1 Qualified fo r automotive applications • AEC-Q100 Qualified With the Following Results: Device temperature grade 1: –40°C to 125°C – Device HBM ESD classific ation level 2 – Device CDM ESD classi fication level C4B • ESD protection e xceeds 2000 V Per MIL-STD883, Method 30 15; using human body model (C = 100 pF, R = 1500 Ω) • Power-on reset genera tor with fixed delay time of 200 ms (TP S3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx -Q1) • Manual reset input (TPS3820/3/ 5/8-xx-Q1) • Reset output available i n active-low (TPS3820/3/4/5-xx-Q1), Act ive-High (TPS3824/5xx-Q1), and open dra in (TPS3828-xx-Q1) • Supply voltage s upervision range: 2.5 V, 3 V, 3.3 V, 5 V • Watchdog timer (TPS3820/3/4/8-xx-Q1) • Supply current of 15 μA (Typical) • 5-Pin SOT-23 .
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