Supervisors. TPS386040 Datasheet

TPS386040 Datasheet PDF


Part

TPS386040

Description

Quad Supply Voltage Supervisors

Manufacture

etcTI

Page 30 Pages
Datasheet
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TPS386040 Datasheet
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TPS386000, TPS386040
SBVS105F – SEPTEMBER 2009 – REVISED OCTOBER 2018
TPS386000 and TPS386040 Quad Supply Voltage Supervisors
With Adjustable Delay and Watchdog Timer
1 Features
1 Four Independent Voltage Supervisors
• Channel 1:
– Adjustable Threshold Down to 0.4 V
– Manual Reset (MR) Input
• Channels 2, 3:
– Adjustable Threshold Down to 0.4 V
• Channel 4:
– Adjustable Threshold at Any Positive or
Negative Voltage
– Window Comparator
• Adjustable Delay Time: 1.4 ms to 10 s
• Threshold Accuracy: 0.25% Typical
• Very Low Quiescent Current: 11 μA Typical
• Watchdog Timer With Dedicated Output
• Well-Controlled Output During Power Up
• TPS386000: Open-Drain RESETn and WDO
• TPS386040: Push-Pull RESETn and WDO
• Package: 4-mm × 4-mm, 20-Pin VQFN
2 Applications
• All DSP and Microcontroller Applications
• All FPGA and ASIC Applications
• Telecom and Wireless Infrastructure
• Industrial Equipment
• Analog Sequencing
3 Description
The TPS3860x0 family of supply voltage supervisors
(SVSs) can monitor four power rails that are greater
than 0.4 V and one power rail less than 0.4 V
(including negative voltage) with a 0.25% (typical)
threshold accuracy. Each of the four supervisory
circuits (SVS-n) assert a RESETn or RESETn output
signal when the SENSEm input voltage drops below
the programmed threshold. With external resistors,
the threshold of each SVS-n can be programmed
(where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).
Each SVS-n has a programmable delay before
releasing RESETn or RESETn. The delay time can
be set independently for each SVS from 1.4 ms to 10
s through the CTn pin connection. Only SVS-1 has an
active-low manual reset (MR) input; a logic-low input
to MR asserts RESET1 or RESET1.
SVS-4 monitors the threshold window using two
comparators. The extra comparator can be
configured as a fifth SVS to monitor negative voltage
with voltage reference output VREF.
The TPS3860x0 has a very low quiescent current of
11 μA (typical) and is available in a small, 4-mm x 4-
mm, VQFN-20 package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3860x0
VQFN (20)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
TPS386000 Typical Application Circuit:
Monitoring Supplies for an FPGA
VMON(1)
RS1H
VMON(2)
VMON(3)
VMON(4)
RS2H
RS3H
RS4H
RS4L
RS3L
RS2L
RS1L
TPS386000
SENSE1
RESET1
SENSE2
RESET2
SENSE3
RESET3
SENSE4L
RESET4
SENSE4H
WDO
VREF
WDI
RST
Microprocessor
DSP
FPGA
GPIO
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.

TPS386040 Datasheet
TPS386000, TPS386040
SBVS105F – SEPTEMBER 2009 – REVISED OCTOBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 6
6.1 Absolute Maximum Ratings ..................................... 6
6.2 ESD Ratings.............................................................. 6
6.3 Recommended Operating Conditions....................... 6
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 7
6.6 Timing Requirements ................................................ 8
6.7 Switching Characteristics .......................................... 8
6.8 Typical Characteristics ............................................ 14
7 Parameter Measurement Information ................ 18
8 Detailed Description ............................................ 19
8.1 Overview ................................................................. 19
8.2 Functional Block Diagrams ..................................... 20
8.3 Feature Description................................................. 22
8.4 Device Functional Modes........................................ 23
9 Application and Implementation ........................ 25
9.1 Application Information............................................ 25
9.2 Typical Application .................................................. 28
10 Power Supply Recommendations ..................... 29
11 Layout................................................................... 30
11.1 Layout Guidelines ................................................. 30
11.2 Layout Example .................................................... 30
12 Device and Documentation Support ................. 31
12.1 Device Support .................................................... 31
12.2 Documentation Support ....................................... 31
12.3 Related Links ........................................................ 31
12.4 Community Resources.......................................... 32
12.5 Trademarks ........................................................... 32
12.6 Electrostatic Discharge Caution ............................ 32
12.7 Glossary ................................................................ 32
13 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (October 2015) to Revision F
Page
• Changed the text in the Power Supply Recommendations section from: This power supply should be less than 1.8 V
in normal operation to: This power supply should not be less than 1.8 V in normal operation............................................ 29
Changes from Revision D (September 2013) to Revision E
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
• Changed Features bullets about Channel 1, 2, 3, and 4 ...................................................................................................... 1
• Changed all references of VCC (and ICC) to VDD ( and IDD) throughout the document ............................................................ 4
• Changed the description of SENSE4L pin function ............................................................................................................... 4
• Changed the description of SENSE4H pin function .............................................................................................................. 4
• Changed the description of MR pin function ......................................................................................................................... 4
• Changed the description of WDI pin function ........................................................................................................................ 4
• Moved ESD ratings from the Absolute Maximum Ratings table to the ESD Ratings table.................................................... 6
• Deleted the Dissipation Ratings table and added the Thermal Information table ................................................................. 6
• Moved timing and switching parameters (tW, tD, tWDT) from the Electrical Characteristics table to the respective
Timing Requirements and Switching Characteristics tables .................................................................................................. 8
• Changed the x-axis title notation from CT to CTn in the TPS386040 RESETn Time-out Period vs CTn graph ................. 14
• Changed the Watchdog Timer (WDT) Truth Table; deleted RESET condition column heading ........................................ 24
• Changed title of SENSE INPUT section to Undervoltage Detection ................................................................................... 25
• Changed Equation 1, Equation 2, and Equation 3 VCC notations to VMON.......................................................................... 25
• Changed title of Window Comparator section to Undervoltage and Overvoltage Detection ............................................... 25
• Changed VCC4 reference in first paragraph of Undervoltage and Overvoltage Detection section to VMON(4) .................... 25
• Changed Equation 4 and Equation 5 VCC4 references to VMON(4)....................................................................................... 25
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Product Folder Links: TPS386000 TPS386040


Features Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity Reference Design TPS386000, TP S386040 SBVS105F – SEPTEMBER 2009 – REVISED OCTOBER 2018 TPS386000 and TPS 386040 Quad Supply Voltage Supervisors With Adjustable Delay and Watchdog Time r 1 Features •1 Four Independent Vol tage Supervisors • Channel 1: – Adj ustable Threshold Down to 0.4 V – Man ual Reset (MR) Input • Channels 2, 3: – Adjustable Threshold Down to 0.4 V • Channel 4: – Adjustable Threshol d at Any Positive or Negative Voltage Window Comparator • Adjustable Del ay Time: 1.4 ms to 10 s • Threshold A ccuracy: 0.25% Typical • Very Low Qui escent Current: 11 μA Typical • Watc hdog Timer With Dedicated Output • We ll-Controlled Output During Power Up TPS386000: Open-Drain RESETn and WDO • TPS386040: Push-Pull RESETn and WDO • Package: 4-mm × 4-mm, 20-Pin VQFN 2 Applications • All DSP and Microco ntroller Applications • All FPGA and ASIC Applications • Telecom and Wireless Infrastructure • Industrial.
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