My Inquiry
My Account
Texas Instruments TPS3828-50QDBVRQ1
- Part No.:
- TPS3828-50QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3828-50QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3828-50QDBVRQ1 from Texas Instruments is an automotive-grade processor supervisory circuit with open-drain reset output, 4.55 V supply voltage threshold, 200 ms power-on reset delay, watchdog timer, and manual reset input. It operates from −40°C to 125°C in SOT-23-5 package and is used for reliable power-up initialization and fault monitoring in automotive microcontroller systems.
For engineers reviewing the TPS3828-50QDBVRQ1 datasheet, TPS3828-50QDBVRQ1 pinout, TPS3828-50QDBVRQ1 application, or TPS3828-50QDBVRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, open-drain RESET output compatibility with bidirectional microcontroller reset pins, fixed 4.55 V supervision threshold, 200 ms delay timing, and integrated watchdog timeout of 1.6 s.
Technical Context
The TPS3828-50QDBVRQ1 implements a precision voltage supervisor with internal resistor-divider-based threshold detection at 4.55 V (VIT−), hysteresis of 50 mV, and power-on reset assertion below 1.1 V. Its reset logic asserts active-low open-drain output when VDD falls below VIT− or MR is pulled low.
It integrates a watchdog timer triggered by transitions on WDI; failure to retrigger within 1.6 s (typ) forces RESET assertion for 200 ms. The device draws only 15 μA typical supply current and requires no external components for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Threshold | 4.55 V (VIT−), ±3% tolerance over −40°C to 125°C - ensures reliable 5 V rail supervision |
| Reset Delay | 200 ms (fixed) - provides sufficient time for power stabilization and processor core initialization |
| Watchdog Timeout | 1.6 s (typ) - detects firmware hangs in automotive control loops without requiring external timing components |
| Output Type | Open-drain RESET - enables wired-OR configuration and compatibility with bidirectional MCU reset pins |
| Supply Current | 15 μA (typ) - minimizes quiescent power in always-on vehicle subsystems |
| Operating Temp | −40°C to 125°C - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications |
| Hysteresis | 50 mV - prevents oscillation during slow-rising or noisy supply conditions |
Pinout & Package
SOT-23-5 package (DBV drawing), 5-pin surface-mount, 1.6 mm × 2.9 mm footprint, RoHS-compliant, green (Pb-free, no Sb/Br) finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain reset output | Active-low signal; requires external pullup for logic-high state; sinks up to 5 mA |
| 2 - GND | Ground reference | Primary return path for all internal circuits and output sink current |
| 3 - MR | Manual reset input | Active-low; pulls RESET low when asserted; internally pulled up to VDD via 52 kΩ resistor |
| 4 - VDD | Supply input | Power source (1.1 V to 5.5 V); powers internal comparator, timer, and logic |
| 5 - WDI | Watchdog input | Edge-triggered; rising or falling transition resets watchdog timer; unconnected disables watchdog |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Stress-tested for automotive use across −40°C to 125°C ambient, supporting safety-critical ECUs |
| Open-drain RESET output | Enables shared reset bus with multiple devices and direct interface to bidirectional MCU reset pins |
| Integrated watchdog timer | 1.6 s timeout eliminates need for external RC timing network or separate watchdog IC |
| Manual reset input (MR) | Allows system-level reset initiation independent of supply voltage condition |
| No external components required | Self-contained supervision: internal voltage divider, timer, and pullup eliminate BOM cost and layout area |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Power sequencing and runtime fault detection in gasoline/diesel engine management modules. IC Role / Device Role / Timing Role: Supervises 5 V microcontroller supply rail and monitors firmware execution via WDI; asserts open-drain RESET to halt unsafe operation. Use Value: Prevents erratic ECU behavior during brownout or software lockup, meeting ISO 26262 ASIL-B functional safety requirements. | Use Scenario: Reset coordination and watchdog monitoring in radar sensor processing units. IC Role / Device Role / Timing Role: Provides 200 ms power-on reset delay and 1.6 s watchdog timeout to validate DSP boot integrity and continuous algorithm execution. Use Value: Ensures deterministic startup and runtime recovery in vision/radar fusion controllers where missed resets risk collision avoidance failure. |
| Body Control Module (BCM) | Infotainment Head Unit |
Use Scenario: Reliable initialization of microcontrollers managing door locks, lighting, and HVAC in vehicle body networks. IC Role / Device Role / Timing Role: Monitors 5 V supply and responds to MR signals from CAN gateway; open-drain output interfaces directly with multi-vendor MCU reset pins. Use Value: Enables unified reset architecture across heterogeneous BCM sub-systems without level-shifting or discrete logic. | Use Scenario: Power supervision for application processors and audio codecs in automotive head units with extended temperature exposure. IC Role / Device Role / Timing Role: Detects 5 V rail collapse during cold-cranking and asserts RESET to prevent corrupted boot sequences. Use Value: Eliminates display glitches and audio artifacts caused by marginal supply conditions during vehicle start-stop cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar processor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3823-50QDBVRQ1 | Same 4.55 V threshold and SOT-23-5 package, but active-low push-pull RESET output (not open-drain) | Requires external pullup for wired-OR; incompatible with bidirectional MCU reset pins | Select when push-pull drive strength is needed and shared reset bus is not required |
| TPS3824-50QDBVRQ1 | Same 4.55 V threshold and SOT-23-5 package, but active-high push-pull RESET output | Cannot interface directly with standard active-low MCU reset inputs without inversion logic | Select only when system design mandates active-high reset signaling and no inversion is acceptable |
Compared with TPS3823-50QDBVRQ1 and TPS3824-50QDBVRQ1, the TPS3828-50QDBVRQ1 uniquely supports open-drain reset architecture-enabling flexible bus topology, voltage-level translation, and native compatibility with bidirectional microcontroller reset pins-without added discrete components.
Availability
TPS3828-50QDBVRQ1 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS sensor modules, and body control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS3828-50QDBVRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TPS382x-Q1 product line delivers AEC-Q100-qualified supervisory circuits designed specifically for robust power-on initialization, supply voltage monitoring, and watchdog protection in automotive microcontroller and DSP systems.
FAQ
What is the reset output configuration of the TPS3828-50QDBVRQ1?
The TPS3828-50QDBVRQ1 features an open-drain RESET output, requiring an external pullup resistor to define the inactive (high) state. This configuration allows wired-OR connection with other reset sources and direct interfacing with bidirectional microcontroller reset pins, unlike push-pull variants in the same family.
Does the TPS3828-50QDBVRQ1 require external components for basic supervision functionality?
No, the TPS3828-50QDBVRQ1 operates autonomously with no external components required for core functions: voltage threshold detection, 200 ms reset delay, manual reset input (MR), and watchdog timer (WDI). Only an external pullup resistor on the open-drain RESET pin is needed for proper logic-level definition.
What is the watchdog timeout period for the TPS3828-50QDBVRQ1?
The watchdog timeout for the TPS3828-50QDBVRQ1 is 1.6 s (typical), with a range of 0.9 s to 2.5 s over temperature and process variation. A rising or falling edge on the WDI pin resets the timer; absence of transitions beyond this interval triggers RESET assertion for 200 ms.
Is the TPS3828-50QDBVRQ1 qualified for automotive applications?
Yes, the TPS3828-50QDBVRQ1 is AEC-Q100 qualified (Grade 1) and specified for operation from −40°C to 125°C. It includes automotive-specific features such as enhanced ESD protection (>2000 V HBM), validated reliability testing, and production flow aligned with automotive quality standards.
What is the supply voltage supervision threshold for the TPS3828-50QDBVRQ1?
The TPS3828-50QDBVRQ1 has a fixed negative-going input threshold voltage (VIT−) of 4.55 V, with ±3% tolerance over temperature. This value is factory-trimmed and applies across the full operating range of −40°C to 125°C, making it suitable for precise 5 V rail supervision in automotive systems.
TPS3828-50QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.55V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 120ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS3828-50QDBVRQ1 FAQ
1.How can I place an order for TPS3828-50QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3828-50QDBVRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS3828-50QDBVRQ1 reliable?
The price and inventory of TPS3828-50QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3828-50QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS3828-50QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3828-50QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3828-50QDBVRQ1?
TPS3828-50QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3828-50QDBVRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS3828-50QDBVRQ1?
For technical support, including TPS3828-50QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3828-50QDBVRQ1 requirements.
6.How does Aetrix verify that TPS3828-50QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3828-50QDBVRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS3828-50QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3828-50QDBVRQ1?
All TPS3828-50QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3828-50QDBVRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS3828-50QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3828-50QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3828-50QDBVRQ1 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
