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TPS3808-Q1

ACTIVE
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Automotive, low-quiescent current programmable-delay supervisor

Data sheet
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Automotive, low-quiescent current programmable-delay supervisor

TPS3808-Q1

ACTIVE
Data sheet Order now

Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable, 1.12, 1.16, 1.4, 1.67, 2.79, 3.07, 4.65 Features Active-low enable, Manual reset Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable VCC (Max) (V) 6.5 TI functional safety category Functional Safety-Capable Rating Automotive VCC (Min) (V) 1.8 Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other Supervisor & reset ICs

Features

  • Qualified for Automotive Applications
  • Power-On Reset Generator With Adjustable Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage Rails From 1.2 V to 5 V and Adjustable Voltage Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Small SOT-23 Package and WSON Package (TPS3808G01QDRVRQ1 only)

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Description

The TPS3808Gxx-Q1 microprocessor supervisory circuits monitor system voltages from 0.4 V to 5 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 MR return above their thresholds.

The TPS3808Gxx-Q1 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted from 1.25 ms to 10 s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4 µA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).

For more information about TI’s voltage supervisor portfolio, visit the Supervisor and Reset IC Overview Page page.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS3890-Q1 ACTIVE Automotive low-quiescent current 1% accuracy supervisor with programmable delay A higher accuracy (1% maximum) device in a small package (1.5-mm by 1.5-mm WSON).
Similar but not functionally equivalent to the compared device:
TPS3840-Q1 ACTIVE Automotive high-input voltage supervisor with manual reset and programmable-reset time delay This device offers more fixed voltage threshold options, and has a wide 10-V input voltage, low IQ (350 nA) and 1% threshold accuracy.

Technical documentation

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Type Title Date
* Datasheet TPS3808Gxx-Q1 Low-Quiescent-Current Programmable-Delay Supervisory Circuit datasheet (Rev. J) Jun. 13, 2017
Application notes TPS3808-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 19, 2019
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
User guides Automotive Power Reference Design for Low-Power TDA3x Based Systems (Rev. B) Jun. 14, 2017
User guides Automotive Power Frontend With Cold Crank Operation and EMI Filter Design Guide Nov. 30, 2015
User guides TIDA-00530 Test Results Oct. 13, 2015
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014
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Technical articles Using telemetry in point-of-load applications Jun. 24, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The TPS3808G01Q1EVM is an evaluation modulate (EVM) for the TPS3808G01-Q1 voltage supervisor. The EVM has a supply voltage range from 1.8 V to 6.5 V. It offers input connections for all device input and output pins. Test points are provided to give the user access to an extra ground connection (...)
Features
  • Qualified for automotive applications
  • Power-on reset (POR) generator with adjustable delay time: 1.25 ms to 10 s
  • Very-low quiescent current: 2.4 μA typical
  • High threshold accuracy: 0.5% typical
  • Fixed threshold voltages for standard voltage rails from 1.2 V to 5 V & adjustable voltage down to (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SBVM030.TSC (208 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBVM031.ZIP (41 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLIM038B.ZIP (81 KB) - PSpice Model
BILL OF MATERIALS (BOM) Download
TIDRI98.PDF (260 KB)
BILL OF MATERIALS (BOM) Download
TIDRJK8.PDF (257 KB)
CAD/CAE SYMBOLS Download
TIDRI99.ZIP (2344 KB)
CAD/CAE SYMBOLS Download
TIDRJK9.ZIP (626 KB)
SCHEMATICS Download
TIDRI97.PDF (684 KB)
SCHEMATICS Download
TIDRJK7.PDF (222 KB)

Reference designs

REFERENCE DESIGNS Download
Electronics and LED Driver Reference Design for Augmented Reality Head-Up Displays
TIDA-080004 — This reference design provides an electronics subsystem designed to drive an automotive augmented reality (AR) head-up display (HUD). DLP® technology enables bright, crisp, highly saturated head-up displays that project critical driving information onto the windshield of the car, reducing driver (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Camera Module Reference Design with 1MPixel Imager, Bayer Video Output & Power over Coax
TIDA-01004 — The TIDA-01004 reference design is a remote automotive camera module that connects over a high speed serial video interface to a display or machine vision processing system. It uses TIs FPD-Link III SerDes technology to transmit uncompressed MegaPixel video data, bidirectional control signals and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Power Reference Design for Low Power TDA3x Based Systems
TIDA-00530 — This solution was designed to make an integrated, size-optimized power design for ADAS applications using the TDA3x SoC off of an automotive battery input.  By targeting only applications with lower processing needs, we’re able to choose devices and components which are smaller, compared (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Front End Power Supply Reference Design with Cold Crank Operation, Transient Protection, EMI Filter
TIDA-00699 — This solution was designed to be a broadly applicable automotive off-battery front end power supply for 10-15W systems. There is a focus on EMI/EMC testing and compliance as well to help designers satisfy the regulatory requirements associated with producing an automotive electronic subsystem.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options
WSON (DRV) 6 View options

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Training series

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Videos

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