Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 1.71, 2.25, 2.64, 2.93 Features Manual reset capable Reset threshold accuracy (%) 1.75 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 85
Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 1.71, 2.25, 2.64, 2.93 Features Manual reset capable Reset threshold accuracy (%) 1.75 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 85
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 WSON (DRV) 6 4 mm² 2 x 2
  • Supply current: 220 nA (typical)
  • Precision supply voltage supervision range:
    1.8 V, 2.5 V, 3.0 V, and 3.3 V
  • Power-on reset generator with selectable delay time: 10 ms or 200 ms
  • Push and pull RESET output (TPS3836),
    Push and pull RESET output (TPS3837), or open-drain RESET output (TPS3838)
  • Manual reset
  • 5-pin SOT23 and 2-mm × 2-mm, 6-pin SON packages
  • Temperature range: –40°C to 85°C
  • Supply current: 220 nA (typical)
  • Precision supply voltage supervision range:
    1.8 V, 2.5 V, 3.0 V, and 3.3 V
  • Power-on reset generator with selectable delay time: 10 ms or 200 ms
  • Push and pull RESET output (TPS3836),
    Push and pull RESET output (TPS3837), or open-drain RESET output (TPS3838)
  • Manual reset
  • 5-pin SOT23 and 2-mm × 2-mm, 6-pin SON packages
  • Temperature range: –40°C to 85°C

The TPS3836, TPS3837, and TPS3838 device families of supervisory circuits provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps the RESET output active as long as VDD remains below the threshold voltage of VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD rises above the threshold voltage VIT.

When CT is connected to GND, a fixed delay time of typically 10 ms is asserted. When connected to VDD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or a 2-mm × 2-mm SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to 85°C.

The TPS3836, TPS3837, and TPS3838 device families of supervisory circuits provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps the RESET output active as long as VDD remains below the threshold voltage of VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD rises above the threshold voltage VIT.

When CT is connected to GND, a fixed delay time of typically 10 ms is asserted. When connected to VDD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or a 2-mm × 2-mm SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet TPS383x Nano Power Voltage Supervisor With Selectable Reset Delay datasheet (Rev. F) 11 Sep 2019
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 Feb 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
User guide DLPC350 Programmer’s Guide (Rev. G) 05 Jul 2018
Design guide TIDA-00570 Test Results (Rev. A) 01 Aug 2017
User guide TIDA-00254 User's Guide (Rev. B) 26 Jul 2017
Test report TIDA-00254 Test Results (Rev. A) 21 Apr 2016
More literature TI DLP® Technology for 3D Machine Vision (Rev. C) 08 Apr 2016
User guide TIDA-00254 User's Guide 25 Jul 2014
More literature DLP Point Cloud Generation and 3D Machine Vision Reference Design 22 Jul 2014
Test report DLP4500-C350REF Test Results 12 Sep 2013
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011

Design & development

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TIDA-00254 Windows Installer (Rev. A)

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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DLP4500-C350REF Schematic (Rev. A)

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Schematic

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Schematic

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TIDRFZ9A.ZIP (2038 KB)
Assembly drawing

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Assembly drawing

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TIDU457A.PDF (112 KB)
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Reference designs

TIDA-00570 — High Speed DLP Sub-system for Industrial 3D Printing and Digital Lithography Reference Design

The High Speed DLP® Sub-system Reference Design provides system-level DLP development board designs for industrial Digital Lithography and 3D Printing applications that require high resolution, superior speed and production reliability. The system design offers maximum throughput by integrating (...)
Reference designs

DLP4500-C350REF — High Resolution, Portable Light Steering Reference Design using DLP Technology

This reference design, featuring the DLP® 0.45” WXGA chipset and implemented in the DLP® LightCrafter™ 4500 evaluation module (EVM), enables flexible control of high resolution, accurate patterns for industrial, medical, and scientific applications. With a free USB-based GUI and (...)
Reference designs

TIDA-00254 — Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology

The 3D Machine Vision reference design employs Texas Instruments DLP® Advanced Light Control Software Development Kit (SDK) for LightCrafter™ series controllers, which allows developers to easily construct 3D point clouds by integrating TI’s digital micromirror device (DMD (...)
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SOT-23 (DBV) 5 View options
WSON (DRV) 6 View options

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