কোম্পানির ব্লগ সম্পর্কে Supply TI Supervisor & Reset IC:Reset & watchdog IC,Supply-Voltage Supervisor

Supply TI Supervisor & Reset IC:Reset & watchdog IC,Supply-Voltage Supervisor

Shenzhen Mingjiada Electronics Co., Ltd. is a renowned distributor of electronic components, offering a wide range of electronic products. The company has established close partnerships with world-renowned electronic component manufacturers, ensuring that all components supplied are sourced through authorised channels and are of reliable quality.

TI reset and watchdog ICs, as well as power supply voltage monitors, are core power protection and fault recovery components in MCU, MPU, FPGA and SoC systems. They are widely used in industrial control, automotive electronics, medical equipment, humanoid robots, AI computing boards and portable battery-powered devices. They continuously monitor the supply rail voltage and output reliable reset signals during power-up, power loss, under-voltage, over-voltage or programme runaway events, ensuring the system safely transitions to a known safe state and mitigating the risks of system crashes, data corruption and hardware lock-ups.

I. Product Details

TI’s devices in this category are primarily divided into two product lines: pure voltage monitors (reset ICs) and reset monitoring ICs with integrated watchdogs. They cover single-channel, multi-channel, window monitoring, automotive-grade and functional safety-rated versions.

1. Pure Power Supply Voltage Monitors (Reset ICs)

These are responsible solely for voltage threshold detection and power-on/power-off reset; they do not include a watchdog timer. They feature a simple structure, require few external components, and have extremely low power consumption.

Representative series: TLV803, TPS3803, TPS3897, TPS3710.

- TLV803: A minimalist 3-pin reset IC with an open-drain, low-active reset output and a fixed threshold. Suitable for low-cost microcontroller solutions, it is available in compact SOT-23 and SC70 packages and is ideal for automation equipment and IoT terminals.

- TPS3897: High-precision single-channel monitoring, ±1% accuracy across the full temperature range, operating voltage 1.7V–6.5V, minimum detection threshold as low as 500mV, 6-SON ultra-miniature package, wide temperature range -40°C to +125°C; suitable for humanoid robot control boards and high-density computing modules.

- TPS3710: Supports high-voltage detection up to 18V, with a resistively adjustable threshold; capable of under-voltage and over-voltage window monitoring; suitable for industrial 24V power supplies and power bus monitoring.

2. Integrated Reset and Watchdog ICs

Incorporates a watchdog timer in addition to voltage monitoring and reset functions; requires the MCU to periodically ‘feed the dog’; failure to do so within the timeout period automatically triggers a reset, resolving issues such as runaway programmes and infinite loops; it is the preferred choice for industrial control, automotive and high-reliability equipment.

Representative series: TPS382x, TPS3306, TPS3307, TPS3110.

- TPS382x (TPS3820/3823/3828): A classic, general-purpose watchdog reset with a fixed voltage threshold; selectable watchdog timeout of 200 ms or 1.6 s; supports manual reset (MR); static current of just 15 μA; the TPS3823-Q1 is an automotive-grade version designed for ADAS applications and meets AEC-Q100 certification.

- TPS3306: Dual-channel voltage monitoring + watchdog; simultaneously monitors two power rails; features a built-in 100 ms reset delay and 0.8 s watchdog; available in SOIC-8 packaging; suitable for multi-rail powered processors and FPGA core boards.

- TPS3307: Three-channel monitoring with reset function; provides independent voltage detection across multiple channels; suitable for complex multi-power-domain systems.

- TPS3110: High-precision low-rail version, supporting voltage monitoring down to 0.86 V with 0.75% accuracy, featuring a watchdog and manual reset.

General Core Features

- Reset output types: Selectable push-pull or open-drain outputs, supporting low-active or high-active modes;

- Reset delay can be fixed or programmable to prevent false resets caused by power-on glitches;

- Quasicurrent typically in the microampere range, extending battery life in battery-powered products;

- Graded versions: commercial grade, industrial wide-temperature grade, AEC-Q100 automotive grade, and functional safety versions (supporting ASIL D);

- Packages include SC70, SOT-23, SON and SOIC, suitable for applications ranging from ultra-compact wearable devices to high-power industrial control platforms.

Typical Application Scenarios

Industrial automation controllers, automotive ADAS and body control units, medical monitoring equipment, humanoid robot main controllers and joint drive boards, AI computing server daughterboards, lithium-battery-powered portable instruments, low Earth orbit (LEO) satellite units, and drone flight control systems.

II. Procurement, Selection and Buyer’s Guide

When selecting a device, prioritise filtering by the number of monitoring channels, whether a watchdog is required, voltage thresholds, accuracy, temperature rating, output type, safety certifications and package type.

1. Functional Selection

If only power-on/undervoltage reset is required and there is no risk of runaway programmes: select a pure voltage monitor, such as the TLV803 or TPS3803, which offers lower cost;

Where MCUs or processors are prone to freezing, or in unattended equipment, industrial control, automotive or robotics applications: models with a watchdog function—such as the TPS382x or TPS3306—must be selected.

2. Number of Channels

Single power supply: single-channel; 1.8V/3.3V dual-rail: dual-channel TPS3306; three or more power domains: TPS3307.

3. Threshold and Accuracy

For general consumer applications, ±2.5% is sufficient; for robotics, computing boards and instrumentation, prioritise high-precision models with ±1% accuracy, such as the TPS3897; for high-voltage busbar monitoring, select the adjustable version of the TPS3710.

4. Environmental Conditions and Certification Levels

Indoor consumer applications: commercial grade; outdoor and industrial control: industrial grade (-40 to 125°C); in-vehicle ADAS: models with the ‘-Q1’ suffix meet the AEC-Q100 automotive standard; for functional safety projects, select TI models with functional safety support, accompanied by FMEDA documentation.

5. Watchdog Parameters

A short timeout (200 ms) is suitable for rapid fault detection; a long timeout (1.6 s) is suitable for algorithm systems with high computational loads and longer watchdog intervals; some models support a watchdog disable function, which is used during the debugging phase.

6. Output and Reset Delay

Open-drain output is suitable for multi-chip reset signal lines; push-pull provides stronger drive capability; the longer the delay, the better the resistance to power-up glitches.

7. Key Points to Avoid Pitfalls When Procuring

Check the suffixes to distinguish between package types, thresholds, output polarity and temperature grades; identify original manufacturer discontinued (NRND) models to avoid long-term supply shortages; do not substitute automotive-grade or functionally safe devices for commercial versions; prior to bulk ordering, request samples to test power-up sequencing, power-down reset and watchdog timeout logic.

III. Mingjiada Electronics | Supply Quality and Delivery for TI’s Product Series

Shenzhen Mingjiada Electronics specialises in the distribution of TI power management, signal chain and monitoring components. We provide a stable supply of the full range of TI reset, voltage monitor and watchdog models, whilst also offering a buy-back service for idle stock within the same series, catering to both new project stockpiling and the disposal of end-of-line stock.

Supply Capabilities

We maintain a regular stock of mainstream products such as the TPS382x, TPS3306, TPS3307, TPS3897, TLV803 and TPS3710, covering commercial, industrial and automotive-grade versions. We support sample requests, small-batch prototyping and medium- to long-term project stockpiling, with a minimum order quantity of one piece, meeting the needs of different stages from R&D and pilot production to mass production; We also undertake the buyback of TI power monitoring components—including obsolete stock, end-of-line stock and full-reel inventory—to help customers realise the value of their assets.

Quality Control System

All TI devices are traceable through authorised channels, with priority given to genuine, factory-direct sources; standardised quality inspection procedures are carried out upon receipt, including silkscreen verification, batch number traceability, visual inspection and ESD control; For highly reliable automotive-grade and industrial-grade components, we provide original manufacturer documentation, datasheets and factory-of-origin information to avoid refurbished, re-soldered or counterfeit components; components are dispatched in their original ESD- and moisture-proof packaging, accompanied by a humidity indicator card to ensure electrical stability.

Delivery and Support Services

Rapid order processing for in-stock models; standard orders are dispatched within 1–3 days, with priority given to urgent R&D orders; For models sourced from overseas, we provide clear delivery time estimates and keep you updated on any changes to delivery schedules; our technical support team can assist engineers with component selection, parameter verification, alternative recommendations and datasheet interpretation, whilst offering tailored power monitoring solutions for applications such as humanoid robots, automotive ADAS, AI servers and automated equipment; long-term partners benefit from regular stock allocation, price frameworks and credit term negotiations.