My Inquiry
My Account
Texas Instruments TPS3899DL31DSERQ1
- Part No.:
- TPS3899DL31DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3899DL31DSERQ1.pdf
- Description:
- AUTOMOTIVE NANOPOWER SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:3,664
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3899DL31DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade nano-power voltage supervisor with open-drain active-low RESET output, ±0.5% threshold accuracy, 125nA typical quiescent current, and programmable sense/reset delay via external capacitors on CTS/CTR pins. It monitors critical rails or push-button inputs in ADAS, radar ECUs, and camera modules.
For engineers reviewing the TPS3899DL31DSERQ1 datasheet, TPS3899DL31DSERQ1 pinout, TPS3899DL31DSERQ1 application, or TPS3899DL31DSERQ1 equivalent, key selection criteria include its 0.505V adjustable VIT− threshold, 5% built-in hysteresis, 1.5mm × 1.5mm WSON-6 package, and dual-capacitor timing control for glitch-immune reset assertion/deassertion.
Technical Context
The TPS3899DL31DSERQ1 implements a precision comparator with separate VDD and SENSE inputs, enabling rail redundancy and independent monitoring of voltages outside the supply range (0.85V–6V). Its internal 500kΩ pull-up resistors on CTS/CTR pins enable programmable delays from 30µs to ~6.2s using external capacitors.
It features dual-stage timing control: CTS sets sense delay (assertion) with 50µs base and glitch immunity down to 10µs at 5% overdrive; CTR sets reset delay (deassertion) with 80µs base and startup delay tSTRT ≤ 300µs. The device uses a fixed 0.505V negative threshold (VIT−) and delivers ±0.5% accuracy across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 0.85V to 6V - supports low-voltage microcontrollers and wide-input automotive rails |
| Threshold Voltage (VIT−) | 0.505V (adjustable) - enables precise monitoring of sub-1V core supplies or button detection |
| Threshold Accuracy | ±0.5% (typical) - ensures reliable reset assertion without margin-driven overdesign |
| Quiescent Current | 125nA (typical) - extends battery life in always-on automotive sensors and telematics |
| Hysteresis (VHYS) | 5% (typical) - prevents chatter during slow-ramping or noisy rail transitions |
| Sense Delay Range | 30µs to 6.2s (CTS-programmable) - configurable immunity to short transients or long brownouts |
| Reset Delay Range | 40µs to 6.2s (CTR-programmable) - ensures stable power/clock settling before processor release |
Pinout & Package
Package: 6-pin WSON (DSE), 1.5mm × 1.5mm, 0.5mm pitch, wettable flank - optimized for space-constrained automotive PCBs and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CTR | Capacitor-programmable reset delay input | Controls time from SENSE recovery to RESET deassertion; internal 500kΩ pull-up enables RC timing |
| 2 - CTS | Capacitor-programmable sense delay input | Controls time from SENSE fault to RESET assertion; provides glitch immunity and manual reset capability |
| 3 - GND | Ground reference | Common return path for VDD, SENSE, and RESET; requires low-inductance connection for noise immunity |
| 4 - VDD | Power supply input | Supplies internal circuitry; decoupling with 0.1µF ceramic capacitor near pin is mandatory |
| 5 - SENSE | High-impedance monitored input | Accepts 0V–6V signals; supports direct rail monitoring or resistor-divider scaling for adjustable thresholds |
| 6 - RESET | Open-drain active-low output | Requires external pull-up; sinks up to 2mA; compatible with 1.8V/3.3V/5V logic interfaces |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical automotive systems |
| Separate VDD and SENSE inputs | Enables monitoring of auxiliary rails (e.g., 12V battery, 5V analog) while powered from 3.3V MCU domain |
| Programmable dual-delay architecture | Independent CTS/CTR timing allows asymmetric assertion/deassertion windows for robust fault handling |
| 0.505V adjustable threshold | Supports direct monitoring of ultra-low-voltage domains (e.g., ARM Cortex-M core supplies) |
| Built-in 5% hysteresis | Eliminates need for external hysteresis resistors and prevents oscillation on marginal rail conditions |
| Glitch immunity (tGI_VIT− = 10µs) | Rejects transients <10µs duration at 5% overdrive - critical for noisy engine-bay environments |
Applications
| ADAS Sensor Node | Radar ECU Power Sequencing |
|---|---|
|
Use Scenario: Monitors 1.0V FPGA core rail and 3.3V interface rail in forward-facing camera ECU subject to load dump and cold crank. IC Role / Device Role / Timing Role: Precision supervisor asserting RESET when either rail drops below 0.505V (scaled via divider) or 3.2V, with 100ms CTS delay to ignore cranking dips. Use Value: Prevents spurious resets during engine start while ensuring deterministic recovery after sustained undervoltage. |
Use Scenario: Controls power-up sequence of MMIC, DSP, and CAN transceiver in 77GHz radar module with strict timing windows. IC Role / Device Role / Timing Role: Generates sequenced RESET signals using CTR-delayed deassertion to hold DSP in reset until MMIC stabilizes. Use Value: Eliminates need for discrete RC networks or CPLD-based sequencing, reducing BOM count and layout area. |
| Automotive Camera Module | Infotainment Head Unit |
|
Use Scenario: Detects push-button press and monitors 1.8V image sensor supply in rear-view camera exposed to thermal cycling. IC Role / Device Role / Timing Role: Dual-function: debounces mechanical switch via CTS pin and supervises sensor rail with ±0.5% accuracy over temperature. Use Value: Replaces separate button debouncer IC and supervisor, cutting component count and improving system-level reliability. |
Use Scenario: Ensures clean boot of application processor and audio codec after ignition cycle in head unit with multiple DC/DC rails. IC Role / Device Role / Timing Role: Monitors primary 5V rail with 0.505V threshold (via 10:1 divider); asserts RESET if rail sags below 4.95V for >50ms (CTS = 100nF). Use Value: Guarantees processor remains held in reset during unstable power conditions, preventing firmware corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3899PL31DSERQ1 | Push-pull active-low RESET output; no external pull-up required | Better suited for high-speed digital interfaces where rise-time control is critical | Select when driving CMOS inputs directly without level-shifting or when minimizing external components is priority |
| TLV809E33DBVRQ1 | Fixed 3.3V threshold; no programmable delay; 1.8µA IQ; SOT-23-3 package | Limited to single-rail monitoring with no push-button support or timing flexibility | Select only for cost-sensitive, single-threshold applications where delay configurability is unnecessary |
Compared with TPS3899PL31DSERQ1, the TPS3899DL31DSERQ1 offers lower system-level leakage via open-drain flexibility but requires a pull-up; compared with TLV809E33DBVRQ1, it delivers superior accuracy, nano-power operation, and dual-capacitor timing-justifying its use in advanced ADAS and radar systems where reliability and configurability are non-negotiable.
Availability
TPS3899DL31DSERQ1 is available at Aetrix Electronics and suitable for Advance Driver Assistance Systems (ADAS), Radar ECU, and Automotive Camera Module applications requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant traceability.
Supply support for TPS3899DL31DSERQ1 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 leader specializing in analog, embedded processing, and automotive electronics, with decades of automotive qualification expertise and broad functional safety portfolio.
The TPS3899-Q1 product line delivers ultra-low-power, high-accuracy voltage supervision for next-generation automotive electronics, specifically engineered for ADAS, infotainment, and electrification systems demanding AEC-Q100 Grade 1 reliability and programmable timing.
FAQ
What is the exact threshold voltage of TPS3899DL31DSERQ1?
The TPS3899DL31DSERQ1 features an adjustable negative threshold voltage (VIT−) of 0.505V (typical), factory-set for this variant. This value is specified with ±0.5% accuracy across –40°C to +125°C and applies to both SENSE rail monitoring and push-button detection functions within the TPS3899DL31DSERQ1 device.
Does TPS3899DL31DSERQ1 require an external pull-up resistor on the RESET pin?
Yes, the TPS3899DL31DSERQ1 has an open-drain active-low RESET output and requires an external pull-up resistor to the desired logic rail (up to 6.0V). Typical values range from 10kΩ to 100kΩ; TI's datasheet specifies 100kΩ for characterization. This pull-up is mandatory for proper logic-level translation and signal integrity in the TPS3899DL31DSERQ1 application.
How is the sense delay programmed on TPS3899DL31DSERQ1?
The sense delay on TPS3899DL31DSERQ1 is programmed via an external capacitor connected between the CTS pin and GND. With CTS open, the base delay is 50µs; adding a 100nF capacitor yields ~65ms, and a 1µF capacitor yields ~619ms. The relationship follows tD-SENSE = 654666 × CCTS + 50µs, as defined in the TPS3899DL31DSERQ1 datasheet.
Can TPS3899DL31DSERQ1 monitor a voltage rail higher than its VDD supply?
Yes, the TPS3899DL31DSERQ1 supports monitoring rails up to 6.0V on the SENSE pin independently of VDD, which operates from 0.85V to 6.0V. This allows the TPS3899DL31DSERQ1 to supervise 5V or 12V-derived rails (via resistor divider) while powered from a lower-voltage domain such as a 3.3V MCU supply.
What automotive qualification does TPS3899DL31DSERQ1 meet?
The TPS3899DL31DSERQ1 is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with HBM ESD level 2 (±2kV) and CDM level C7B (±750V). These qualifications are documented in the official TPS3899-Q1 datasheet and apply specifically to the TPS3899DL31DSERQ1 part number, confirming its suitability for under-hood and safety-critical automotive applications.
TPS3899DL31DSERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.1V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 40µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (1.5x1.5)
TPS3899DL31DSERQ1 FAQ
1.How can I place an order for TPS3899DL31DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3899DL31DSERQ1 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 TPS3899DL31DSERQ1 reliable?
The price and inventory of TPS3899DL31DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3899DL31DSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS3899DL31DSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3899DL31DSERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3899DL31DSERQ1?
TPS3899DL31DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3899DL31DSERQ1 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 TPS3899DL31DSERQ1?
For technical support, including TPS3899DL31DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3899DL31DSERQ1 requirements.
6.How does Aetrix verify that TPS3899DL31DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3899DL31DSERQ1 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 TPS3899DL31DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3899DL31DSERQ1?
All TPS3899DL31DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3899DL31DSERQ1, 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 TPS3899DL31DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3899DL31DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3899DL31DSERQ1 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…
