Supervisor. TPS3890 Datasheet

TPS3890 Datasheet PDF


Part

TPS3890

Description

1% Accurate Supervisor

Manufacture

etcTI

Page 25 Pages
Datasheet
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TPS3890 Datasheet
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TPS3890
SLVSD65A – MARCH 2016 – REVISED MAY 2016
TPS3890
Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay
1 Features
1 Power-On-Reset (POR) Generator with Adjustable
Delay Time: 40 μs to 30 s
• Very Low Quiescent Current: 2.1 μA (Typical)
• High Threshold Accuracy: 1% (max)
• Precision Hysteresis
• Fixed and Adjustable Threshold Voltages:
– Fixed Thresholds for Standard Rails:
1.2 V to 3.3 V
– Adjustable Down to 1.15 V
• Manual Reset (MR) Input
• Open-Drain RESET Output
• Temperature Range: –40°C to +125°C
• Package: 1.5-mm × 1.5-mm WSON
2 Applications
• DSPs or Microcontrollers
• FPGAs, ASICs
• Notebooks, Desktop Computers
• Smartphones, Hand-Held Products
• Portable, Battery-Powered Products
• Solid-State Drives
• Set-Top Boxes
• Industrial Control Systems
3 Description
The TPS3890 is a precision voltage supervisor with
low-quiescent current that monitors system voltages
as low as 1.15 V, asserting an open-drain RESET
signal when the SENSE voltage drops below a preset
threshold or when the manual reset (MR) pin drops to
a logic low. The RESET output remains low for the
user-adjustable delay time after the SENSE voltage
and manual reset (MR) return above the respective
thresholds. The TPS3890 family uses a precision
reference to achieve 1% threshold accuracy. The
reset delay time can be user-adjusted between 40 μs
and 30 s by connecting the CT pin to an external
capacitor. The TPS3890 has a very low quiescent
current of 2.1 μA and is available in a small 1.5-mm ×
1.5-mm package, making the device well-suited for
battery-powered and space-constrained applications.
The device is fully specified over a temperature range
of –40°C to +125°C (TJ).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3890
WSON (6)
1.50 mm × 1.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
1.8 V
1.2 V
VDD
SENSE
MR
TPS389012
RESET
CT
GND
VCORE
VI/O
Microcontroller
RESET
GND
Copyright © 2016, Texas Instruments Incorporated
VITN Accuracy vs Temperature
0.75
Unit 1
Unit 3
Unit 5
Unit 2
Unit 4
Avg
0.5
0.25
0
-0.25
-0.5
-0.75
-50
-25
0 25 50 75
Temperature (qC)
100 125
D001
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.

TPS3890 Datasheet
TPS3890
SLVSD65A – MARCH 2016 – REVISED MAY 2016
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 ................................................ 5
7.7 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 14
9 Application and Implementation ........................ 15
9.1 Application Information............................................ 15
9.2 Typical Application ................................................. 15
10 Power Supply Recommendations ..................... 16
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Documentation Support ....................................... 18
12.2 Community Resources.......................................... 18
12.3 Trademarks ........................................................... 18
12.4 Electrostatic Discharge Caution ............................ 18
12.5 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (March 2016) to Revision A
Page
• Released to production........................................................................................................................................................... 1
2 Submit Documentation Feedback
Product Folder Links: TPS3890
Copyright © 2016, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS3890 SLVSD65A – MARCH 2 016 – REVISED MAY 2016 TPS3890 Low Qu iescent Current, 1% Accurate Supervisor with Programmable Delay 1 Features 1 Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 μs to 30 s Very Low Quiescent Current: 2.1 μA (Typical) • High Threshold Accuracy: 1% (max) • Precision Hysteresis • F ixed and Adjustable Threshold Voltages: – Fixed Thresholds for Standard Rail s: 1.2 V to 3.3 V – Adjustable Down t o 1.15 V • Manual Reset (MR) Input Open-Drain RESET Output • Temperatu re Range: –40°C to +125°C • Packa ge: 1.5-mm × 1.5-mm WSON 2 Application s • DSPs or Microcontrollers • FPGA s, ASICs • Notebooks, Desktop Compute rs • Smartphones, Hand-Held Products • Portable, Battery-Powered Products • Solid-State Drives • Set-Top Boxe s • Industrial Control Systems 3 Des cription The TPS3890 is a precision voltage supervisor with low-quiescent current that monitors system voltages .
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