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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Texas Instruments TPS3808G50QDBVRCT

Name: TPS3808G50QDBVRCT
Brand: Texas Instruments
SKU: TPS3808G50QDBVRCT
Price: 2.40 USD
Availability: InStock
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Part No.:: TPS3808G50QDBVRCT

Manufacturer:: Texas Instruments

Category:: Supervisors

Package:: -

Datasheet:: TPS3808G50QDBVRCT.pdf

Description:: IC SUPERVISOR

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Product details

Overview

TPS3808G50QDBVRCT from Texas Instruments is an automotive-grade, low-quiescent-current supervisory circuit that monitors 5-V system rails and asserts an open-drain RESET signal when the SENSE voltage drops below 4.65 V or MR is pulled low. It supports user-programmable reset delays from 1.25 ms to 10 s via external capacitor on CT pin, features ±0.5% threshold accuracy (≤3.3 V), and operates across –40°C to +125°C. Used in automotive radar and DSP power sequencing.

For engineers reviewing the TPS3808G50QDBVRCT datasheet, TPS3808G50QDBVRCT pinout, TPS3808G50QDBVRCT application, or TPS3808G50QDBVRCT equivalent, this page delivers verified technical context, exact pin functions, real-world timing behavior, automotive qualification evidence, and validated alternative options for reset supervision in safety-critical embedded systems.

Technical Context

The TPS3808G50QDBVRCT implements a precision bandgap reference and comparator architecture to achieve 0.5% typical VIT accuracy at 4.65 V with built-in hysteresis (1–2.5% of VIT). Its internal 220-nA current source charges the CT capacitor to 1.23 V to define reset timeout-enabling delay programming from 1.25 ms to 10 s with ≥100 pF ceramic capacitors.

It uses an open-drain RESET output requiring external pullup (10 kΩ–1 MΩ), supports manual reset via MR with 90-kΩ internal pullup, and rejects short SENSE transients via overdrive-dependent immunity-validated up to 20 μs duration at 5% overdrive. All specifications are fully characterized from –40°C to +125°C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Threshold Voltage (VIT)	4.65 V - factory-trimmed fixed threshold for 5-V rail monitoring; ±0.5% accuracy ensures reliable detection within 23 mV tolerance.
Quiescent Current (IDD)	2.4 μA typical at 3.3 V - enables multi-year battery operation in always-on automotive modules without compromising supervision integrity.
Reset Delay Range	1.25 ms to 10 s - programmable via CT pin capacitor; supports precise power-up sequencing for FPGAs, MCUs, and ASICs.
Operating Temperature	–40°C to +125°C - AEC-Q100 qualified for under-hood automotive applications including radar and vision ECUs.
Output Type	Open-drain RESET - allows level-shifting, wired-OR configuration, and compatibility with 1.8–6.5 V host logic interfaces.
SENSE Input Bias	±25 nA max - minimizes loading on monitored rails and enables direct connection to low-noise VCORE or I/O supplies.

Pinout & Package

SOT-23-6 package (2.90 mm × 1.60 mm), surface-mount, lead-free, RoHS-compliant. Thermal pad not present in DBV variant.

Pin/Terminal	Circuit Role	Design Meaning
1: RESET	Open-drain output	Asserts low during fault or MR activation; requires external pullup; sinks ≥1 mA at VOL ≤ 0.4 V (VDD ≥ 1.8 V).
2: GND	Ground reference	Primary return path for internal circuitry and RESET sink current; must connect to low-impedance system ground plane.
3: MR	Manual reset input	Active-low control; internally pulled up to VDD via 90-kΩ resistor; logic low ≤ 0.3×VDD forces immediate RESET assertion.
4: CT	Delay timing control	Connects to external capacitor (≥100 pF) to set reset timeout; floating = 20 ms, tied to VDD via 40–200 kΩ = 300 ms.
5: SENSE	Voltage monitor input	High-impedance node (±25 nA bias) sensing 0.4–5 V rails; asserts RESET when voltage falls below 4.65 V with hysteresis.
6: VDD	Supply input	Accepts 1.8–6.5 V; powers internal reference and logic; requires 0.1-μF ceramic decoupling capacitor placed adjacent to pin.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for automotive use across –40°C to +125°C ambient; includes HBM ±2000 V and CDM ±500 V ESD robustness.
Programmable reset delay	Three configuration modes: fixed 20 ms (CT open), fixed 300 ms (CT→VDD), or user-defined 1.25 ms–10 s (CT→capacitor).
High-accuracy threshold	±0.5% typical VIT accuracy for VIT ≤ 3.3 V; ±1% for 3.3 V < VIT ≤ 5 V - ensures tight margining for 5-V rail supervision.
Low-power supervision	2.4 μA typical supply current enables integration into energy-sensitive domains like ADAS sensor nodes and telematics.
Transient-immune SENSE input	Rejects short negative glitches ≤20 μs duration at 5% overdrive - prevents false resets in electrically noisy automotive environments.

Applications

Automotive Radar Power Sequencing	DSP Core Voltage Monitoring
Use Scenario: Ensures clean power-up of 77-GHz radar MMICs and baseband processors by verifying stable 5-V analog supply before releasing reset to FPGA. IC Role / Device Role / Timing Role: Supervises 5-V LDO output feeding radar RF section; asserts RESET until voltage settles above 4.65 V and holds for 100 ms delay. Use Value: Prevents radar initialization faults caused by brownout or slow-rising 5-V rail; eliminates need for discrete RC timing networks.	Use Scenario: Monitors 5-V I/O supply for TI C6000 DSPs in engine control units where voltage droop during transient load spikes must trigger controlled reboot. IC Role / Device Role / Timing Role: SENSE pin connected directly to DSP's 5-V VI/O rail; RESET drives DSP's active-low POR pin with 300-ms hold time. Use Value: Guarantees DSP enters known state after supply recovery; 0.5% VIT accuracy avoids marginal resets near 4.65 V threshold.
FPGA Configuration Integrity	Automotive Vision Module Reset Control
Use Scenario: Validates 5-V auxiliary supply powering FPGA configuration memory and I/O banks prior to bitstream loading in ADAS camera ECUs. IC Role / Device Role / Timing Role: TPS3808G50QDBVRCT's CT pin tied to VDD for 300-ms fixed delay; RESET released only after 5-V rail remains stable >300 ms. Use Value: Eliminates FPGA configuration corruption due to premature release of PROG_B; replaces larger, less accurate discrete supervisors.	Use Scenario: Provides fail-safe reset for 5-V image sensor interface in rear-view camera modules exposed to wide thermal cycling and EMI. IC Role / Device Role / Timing Role: Monitors 5-V sensor supply; MR pin driven by microcontroller watchdog to force system reset if vision pipeline hangs. Use Value: Enables dual-trigger reset (supply fault + software watchdog); open-drain RESET allows shared reset bus with other vision subsystem ICs.

Automotive Radar Power Sequencing

DSP Core Voltage Monitoring

Use Scenario: Ensures clean power-up of 77-GHz radar MMICs and baseband processors by verifying stable 5-V analog supply before releasing reset to FPGA.

IC Role / Device Role / Timing Role: Supervises 5-V LDO output feeding radar RF section; asserts RESET until voltage settles above 4.65 V and holds for 100 ms delay.

Use Value: Prevents radar initialization faults caused by brownout or slow-rising 5-V rail; eliminates need for discrete RC timing networks.

Use Scenario: Monitors 5-V I/O supply for TI C6000 DSPs in engine control units where voltage droop during transient load spikes must trigger controlled reboot.

IC Role / Device Role / Timing Role: SENSE pin connected directly to DSP's 5-V VI/O rail; RESET drives DSP's active-low POR pin with 300-ms hold time.

Use Value: Guarantees DSP enters known state after supply recovery; 0.5% VIT accuracy avoids marginal resets near 4.65 V threshold.

FPGA Configuration Integrity

Automotive Vision Module Reset Control

Use Scenario: Validates 5-V auxiliary supply powering FPGA configuration memory and I/O banks prior to bitstream loading in ADAS camera ECUs.

IC Role / Device Role / Timing Role: TPS3808G50QDBVRCT's CT pin tied to VDD for 300-ms fixed delay; RESET released only after 5-V rail remains stable >300 ms.

Use Value: Eliminates FPGA configuration corruption due to premature release of PROG_B; replaces larger, less accurate discrete supervisors.

Use Scenario: Provides fail-safe reset for 5-V image sensor interface in rear-view camera modules exposed to wide thermal cycling and EMI.

IC Role / Device Role / Timing Role: Monitors 5-V sensor supply; MR pin driven by microcontroller watchdog to force system reset if vision pipeline hangs.

Use Value: Enables dual-trigger reset (supply fault + software watchdog); open-drain RESET allows shared reset bus with other vision subsystem ICs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory circuit applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3808G33QDBVRQ1	Fixed 3.07-V threshold; identical pinout, package, and delay programming capability.	Designed for 3.3-V rail supervision-not suitable for 5-V systems without external divider.	Select only when monitoring 3.3-V supplies; no layout change needed but threshold mismatch invalidates 5-V use.
MAX6326UT46D3+T	4.63-V threshold, 2.5-μA quiescent current, fixed 200-ms delay, SOT-23-5 package (no MR pin).	Lacks manual reset input and programmable delay; smaller footprint but reduced flexibility.	Choose when MR and adjustable delay are unnecessary; verify 4.63-V vs. 4.65-V threshold impact on 5-V margining.

Compared with TPS3808G50QDBVRCT, the TPS3808G33QDBVRQ1 offers identical form-factor and timing control but targets 3.3-V rails, while the MAX6326UT46D3+T trades MR functionality and delay flexibility for lower component count in fixed-timing 5-V applications.

Availability

TPS3808G50QDBVRCT is available at Aetrix Electronics and suitable for automotive radar, DSP power sequencing, FPGA configuration integrity, and vision module reset control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS3808G50QDBVRCT 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, with leadership in automotive, industrial, and communications markets.

The TPS3808Gxx-Q1 product line delivers AEC-Q100-qualified, ultra-low-power supervisory circuits optimized for voltage monitoring and reset generation in safety-critical automotive electronics such as radar, vision, and powertrain control units.

FAQ

What is the exact reset threshold voltage for TPS3808G50QDBVRCT?

The TPS3808G50QDBVRCT has a factory-trimmed fixed threshold voltage (VIT) of 4.65 V, with ±1% maximum deviation over temperature and process variation. This value is specified in the Electrical Characteristics table of the SBVS085J datasheet and applies specifically to the TPS3808G50QDBVRCT variant-not derived from generic family data.

Does TPS3808G50QDBVRCT support manual reset functionality?

Yes, TPS3808G50QDBVRCT includes a dedicated MR (manual reset) input (Pin 3) that asserts RESET low when driven to ≤0.3×VDD. The pin features a 90-kΩ internal pullup resistor, allowing it to be left unconnected if manual reset is unused-no external components required for basic operation.

What package type and dimensions does TPS3808G50QDBVRCT use?

TPS3808G50QDBVRCT is packaged in a 6-pin SOT-23 (DBV) case measuring 2.90 mm × 1.60 mm × 1.30 mm nominal body size. It is lead-free, RoHS-compliant, and does not include an exposed thermal pad-unlike the WSON variant (DRV) used in other TPS3808Gxx-Q1 part numbers.

How is the reset delay time configured on TPS3808G50QDBVRCT?

The reset delay on TPS3808G50QDBVRCT is set via the CT pin (Pin 4): leaving it open yields ~20 ms, connecting it to VDD through a 40–200 kΩ resistor yields ~300 ms, and connecting it to GND via a ≥100 pF capacitor enables user-programmable delays from 1.25 ms to 10 s using the internal 220-nA current source.

Is TPS3808G50QDBVRCT qualified for automotive applications?

Yes, TPS3808G50QDBVRCT is AEC-Q100 Grade 1 qualified (–40°C to +125°C), with documented HBM ±2000 V and CDM ±500 V ESD ratings. Its full electrical characterization across temperature, lifetime reliability data, and automotive-specific failure mode analysis are provided in the SBVS085J production datasheet.

TPS3808G50QDBVRCT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Type:: -

Number of Voltages Monitored:: -

Voltage - Threshold:: -

Output:: -

Reset:: -

Reset Timeout:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

TPS3808G50QDBVRCT FAQ

1.How can I place an order for TPS3808G50QDBVRCT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS3808G50QDBVRCT 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 TPS3808G50QDBVRCT reliable?

The price and inventory of TPS3808G50QDBVRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3808G50QDBVRCT is usually 5 days.

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TPS3808G50QDBVRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS3808G50QDBVRCT 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 TPS3808G50QDBVRCT?

For technical support, including TPS3808G50QDBVRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3808G50QDBVRCT requirements.

6.How does Aetrix verify that TPS3808G50QDBVRCT is sourced from the original manufacturer or authorized distributors?

All TPS3808G50QDBVRCT 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 TPS3808G50QDBVRCT meets industry standards.

7.What is the process for return or replacement of TPS3808G50QDBVRCT?

All TPS3808G50QDBVRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3808G50QDBVRCT, 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 TPS3808G50QDBVRCT part is unused and in its original packaging.

Return procedure for TPS3808G50QDBVRCT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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