TPS3838
- 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.
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Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS383x Nano Power Voltage Supervisor With Selectable Reset Delay datasheet (Rev. F) | PDF | HTML | 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 | ||
| Product overview | 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
For additional terms or required resources, click any title below to view the detail page where available.
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TIDA-00570 — High Speed DLP Sub-system for Industrial 3D Printing and Digital Lithography Reference Design
DLP4500-C350REF — High Resolution, Portable Light Steering Reference Design using DLP Technology
TIDA-00254 — Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| WSON (DRV) | 6 | Ultra Librarian |
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