Voltage Detectors. TPS3780 Datasheet

TPS3780 Datasheet PDF, Equivalent


Part Number

TPS3780

Description

High-Accuracy Voltage Detectors

Manufacture

etcTI

Total Page 30 Pages
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TPS3780 Datasheet
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TPS3779, TPS3780
SBVS250 – APRIL 2015
TPS37xx Dual-Channel, Low-Power, High-Accuracy Voltage Detectors
1 Features
1 Two-Channel Detectors in Small Packages
• High-Accuracy Threshold and Hysteresis: 1.0%
• Low Quiescent Current: 2 µA (typ)
• Adjustable Detection Voltage Down to 1.2 V
• Multiple Hysteresis Options:
– 0.5%, 1%, 5%, and 10%
• Temperature Range: –40°C to 125°C
• Push-Pull (TPS3779) and Open-Drain (TPS3780)
Output Options
• Available in µSON and SOT23 Packages
2 Applications
• DSP, Microcontroller, and Microprocessor
Applications
• Portable Medical Devices
• Building Automation
• Set-Top Boxes
• Solid-State Drives
• Notebook and Desktop Computers
• Portable and Battery-Powered Products
• Power-Supply Sequencing Applications
3 Description
The TPS3779 and TPS3780 are a family of high-
accuracy, two-channel voltage detectors with low-
power and small solution size. The SENSE1 and
SENSE2 inputs include hysteresis to reject brief
glitches, ensuring stable output operation without
false triggering. This family offers different factory-set
hysteresis options of 0.5%, 1%, 5%, or 10%.
The TPS3779 and TPS3780 have adjustable SENSE
inputs that can be configured by an external resistor
divider. When the voltage at the SENSE1 or SENSE2
input goes below the falling threshold, OUT1 or OUT2
is driven low, respectively. When SENSE1 or
SENSE2 rises above the rising threshold, OUT1 or
OUT2 goes high, respectively.
The devices have a very low quiescent current of
2 µA (typical) and provide a precise, space-conscious
solution for voltage detection suitable for low-power
system-monitoring and portable applications. The
TPS3779 and TPS3780 operate from 1.5 V to 6.5 V,
over the –40°C to 125°C temperature range.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS37xx
µSON (6)
SOT23 (6)
1.45 mm × 1.00 mm
2.92 mm × 1.30 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Sense Threshold (VIT+) Deviation versus
Temperature
0.4
Sense 1 VDD = 1.5 V
0.32 Sense 1 VDD = 6.5 V
0.24 Sense 2 VDD = 1.5 V
Sense 2 VDD = 6.5 V
0.16
0.08
0
-0.08
-0.16
-0.24
-0.32
-0.4
-40 -20 0 20 40 60 80 100 120
Temperature (GC)
VMON2
R3
R4
Typical Schematic
VDD = 1.5 V to 6.5 V
0.1 F
VMON1
R1
VDD
SENSE1
OUT1
R2 Device
SEN SE 2
OUT2
TPS378 0 Onl y
VPUL LU P
RPU1
RPU1
GND
To a re set or enable
inpu t of the syste m
To a re set or enable
inpu t of the syste m
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.

TPS3780 Datasheet
TPS3779, TPS3780
SBVS250 – APRIL 2015
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 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagrams ..................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 11
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 Typical Applications ................................................ 13
9.3 Monitoring Two Separate Rails............................... 13
9.4 Early Warning Detection ......................................... 14
10 Power-Supply Recommendations ..................... 15
11 Layout................................................................... 15
11.1 Layout Guidelines ................................................. 15
11.2 Layout Example .................................................... 15
12 Device and Documentation Support ................. 16
12.1 Device Support...................................................... 16
12.2 Documentation Support ........................................ 16
12.3 Related Links ........................................................ 16
12.4 Trademarks ........................................................... 16
12.5 Electrostatic Discharge Caution ............................ 16
12.6 Glossary ................................................................ 17
13 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
DATE
April 2015
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: TPS3779 TPS3780
Copyright © 2015, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS3779, TPS3780 SBVS250 – APRIL 2015 TPS37xx Dual-Channel, Low-P ower, High-Accuracy Voltage Detectors 1 Features •1 Two-Channel Detectors i n Small Packages • High-Accuracy Thre shold and Hysteresis: 1.0% • Low Quie scent Current: 2 µA (typ) • Adjustab le Detection Voltage Down to 1.2 V • Multiple Hysteresis Options: – 0.5%, 1%, 5%, and 10% • Temperature Range: –40°C to 125°C • Push-Pull (TPS37 79) and Open-Drain (TPS3780) Output Opt ions • Available in µSON and SOT23 P ackages 2 Applications • DSP, Microco ntroller, and Microprocessor Applicatio ns • Portable Medical Devices • Bui lding Automation • Set-Top Boxes • Solid-State Drives • Notebook and Des ktop Computers • Portable and Battery -Powered Products • Power-Supply Sequ encing Applications 3 Description The TPS3779 and TPS3780 are a family of hig haccuracy, two-channel voltage detectors with lowpower and small solution size. The SENSE1 and SENSE2 inp.
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