Active-low, push-pull, nano-power supervisors with manual reset
Product details
Parameters
Package | Pins | Size
Features
- 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
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Description
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.
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS383x Nano Power Voltage Supervisor With Selectable Reset Delay datasheet (Rev. F) | Sep. 11, 2019 |
Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | Feb. 28, 2020 | |
Technical articles | Using low-Iq voltage supervisors to extend battery life in handheld electronics | Sep. 27, 2019 | |
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ADS8332 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8332 successive-approximation register (SAR) analog-to-digital converter (ADC). ADS8332EVMV2-PDK includes the ADS8332EVMV2 board, the precision host interface (PHI (...)
Features
- Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8332 ADC
- No external power supply required
- Ships with PHI controller that provides convenient communication interface to ADS8332EVM over USB 2.0 (or higher) for power delivery, as (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
Design files
-
download TIDA-01214 BOM Files.zip (520KB) -
download TIDA-01214 Assembly Files.zip (716KB) -
download TIDA-01214 Layer Plots.zip (4008KB) -
download TIDA-01214 Altium.zip (7943KB) -
download TIDA-01214 Gerber.zip (2975KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-23 (DBV) | 5 | View options |
Ordering & quality
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- Lead finish/Ball material
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- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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