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Texas Instruments TPS3899DL30DSERQ1
- Part No.:
- TPS3899DL30DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3899DL30DSERQ1.pdf
- Description:
- AUTOMOTIVE NANOPOWER SUPERVISOR
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS3899DL30DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive 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 camera modules and radar ECUs.
For engineers reviewing the TPS3899DL30DSERQ1 datasheet, TPS3899DL30DSERQ1 pinout, TPS3899DL30DSERQ1 application, or TPS3899DL30DSERQ1 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 TPS3899DL30DSERQ1 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 and CTR pins interface with external capacitors to set sense delay (tD-SENSE) and reset delay (tD) independently.
It features fixed 0.505V negative-going threshold (VIT−), 5% hysteresis (VHYS), and glitch immunity of 10µs at 5% VIT− overdrive. The open-drain RESET output requires an external pull-up and supports interface voltages up to 6.0V, decoupled from VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIT− Threshold | 0.505V typical; enables precise low-voltage rail or button monitoring with minimal headroom loss. |
| Threshold Accuracy | ±0.5% typical; ensures reliable reset assertion across –40°C to +125°C without calibration. |
| Quiescent Current | 125nA typical; extends battery life in always-on automotive subsystems like camera wake-up circuits. |
| Hysteresis (VHYS) | 5% typical; prevents false resets during slow-ramping or noisy rail transitions. |
| Sense Delay Range | 50µs (CTS open) to 6.2ms (CTS = 10nF); configurable for push-button debouncing or rail stabilization. |
| Reset Delay Range | 80µs (CTR open) to 6.2ms (CTR = 10nF); ensures stable power/clock settling before processor release. |
| Operating Voltage | 0.85V to 6V on VDD/SENSE; supports direct monitoring of 1.0V, 1.2V, 1.8V, 3.3V, and 5V rails. |
| Package | WSON-6 (DSE), 1.5mm × 1.5mm; enables ultra-compact placement near SoC or sensor ICs in space-constrained modules. |
Pinout & Package
TPS3899DL30DSERQ1 uses a 6-pin WSON (DSE) package, 1.5mm × 1.5mm, with wettable flanks and exposed thermal pad. Pin 1 is marked by a dot; top-side marking includes TI logo and date code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CTR | Reset delay timing input | Connects to ground-referenced capacitor to set deassertion delay; internal 500kΩ pull-up enables floating default (80µs). |
| 2 - CTS | Sense delay timing input | Connects to ground-referenced capacitor to set assertion delay; internal 500kΩ pull-up enables floating default (50µs). |
| 3 - GND | Ground reference | Low-impedance return path for internal circuitry and external timing capacitors; must be connected directly to system ground plane. |
| 4 - VDD | Supply voltage input | Power source for internal bias and logic (0.85V–6V); requires 0.1µF ceramic decoupling capacitor placed adjacent to pin. |
| 5 - SENSE | Monitored voltage input | High-impedance (≤0.1µA leakage) input for rail or push-button signal; accepts 0V–6V regardless of VDD; supports resistor-divider for thresholds >0.505V. |
| 6 - RESET | Open-drain active-low output | Asserts low when SENSE falls below VIT−; requires external pull-up to target interface voltage (up to 6.0V); sinks ≤2mA. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable sense delay | CTS pin enables user-defined assertion delay (50µs–6.2ms) for robust push-button debouncing or rail brown-out filtering. |
| Programmable reset delay | CTR pin enables user-defined deassertion delay (80µs–6.2ms) to guarantee stable clock/power before MCU exit from reset. |
| Separate VDD and SENSE inputs | Allows monitoring of voltage rails independent of device supply (e.g., monitor 1.0V LDO while powered from 3.3V), enhancing system-level fault isolation. |
| Adjustable 0.505V threshold | Supports ultra-low-voltage monitoring (e.g., 0.6V core rails) without external divider, reducing BOM count and layout area. |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient), HBM ±2kV, CDM ±750V - validated for safety-critical ADAS and gateway applications. |
| Glitch immunity | 10µs rejection window at 5% VIT− overdrive; suppresses EMI-induced transients on SENSE without requiring external RC filters. |
Applications
| ADAS Camera Module | Radar ECU Power Sequencing |
|---|---|
|
Use Scenario: Monitors 1.2V image sensor core rail and 3.3V I/O rail during cold start and vibration-induced dropout. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to FPGA upon rail sag; uses CTS=10nF for 6.2ms sense delay to ignore brief dips. Use Value: Prevents corrupted frame capture by holding imaging pipeline in reset until both rails stabilize for ≥6.2ms. |
Use Scenario: Controls power-up sequence of MMIC driver and DSP in 77GHz radar unit with strict timing margins. IC Role / Device Role / Timing Role: Generates delayed RESET release after 1.8V analog supply reaches regulation; CTR=1µF sets 619ms delay. Use Value: Ensures RF front-end biasing completes before digital baseband initialization, eliminating startup spurs. |
| Infotainment Head Unit | Automotive Gateway Microcontroller |
|
Use Scenario: Detects momentary loss of 5V USB-C power delivery during vehicle ignition transients. IC Role / Device Role / Timing Role: Push-button monitor using SENSE tied to USB VBUS through resistor divider; CTS=100nF for 62ms debounce. Use Value: Distinguishes true power loss from <50ms ignition noise, avoiding unintended UI reset during engine cranking. |
Use Scenario: Supervises 3.3V CAN transceiver supply and 1.2V microcontroller core in multi-domain gateway. IC Role / Device Role / Timing Role: Dual-rail monitor with SENSE on core rail and VDD on I/O rail; VHYS=5% prevents oscillation during load-step events. Use Value: Guarantees deterministic CAN node reset during partial brown-out, maintaining network integrity without bus arbitration loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3899PL30DSERQ1 | Push-pull active-low RESET output; no external pull-up required; identical timing, threshold, and accuracy specs. | Preferred where board space allows elimination of pull-up resistor and where drive strength >2mA is needed. | Select when simplifying BOM and reducing component count outweighs need for level-shiftable RESET output. |
| TLV809EDBZRQ1 | Fixed 3.08V threshold; no programmable delay; 1.8µA IQ; SOT-23-3 package; ±1% accuracy. | Used in cost-sensitive, single-rail applications without timing flexibility or sub-1V monitoring needs. | Choose only for non-adjustable 3.08V supervision where nano-power and delay programming are unnecessary. |
Compared with TPS3899PL30DSERQ1, the TPS3899DL30DSERQ1 offers level-shifted RESET signaling but requires a pull-up; versus TLV809EDBZRQ1, it delivers 15× lower IQ, 2× tighter accuracy, and full delay configurability - essential for modern low-voltage automotive subsystems.
Availability
TPS3899DL30DSERQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, radar ECUs, and infotainment head units requiring stable component supply across extended temperature and automotive lifecycle requirements.
Supply support for TPS3899DL30DSERQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive-grade power management and signal chain solutions.
The TPS3899-Q1 product line delivers nano-power, AEC-Q100 qualified voltage supervisors for battery-sensitive and safety-critical automotive systems including camera, radar, and domain controller applications.
FAQ
What is the exact threshold voltage of TPS3899DL30DSERQ1?
The TPS3899DL30DSERQ1 has a factory-set adjustable negative-going input threshold (VIT−) of 0.505V typical, with ±0.5% accuracy over –40°C to +125°C. This value is confirmed in Section 6.5 of the official datasheet under "VADJ-VIT–" parameter. No external resistor divider is required to achieve this threshold, making it ideal for ultra-low-voltage monitoring scenarios.
Does TPS3899DL30DSERQ1 require an external pull-up resistor on the RESET pin?
Yes, TPS3899DL30DSERQ1 features an open-drain active-low RESET output and requires an external pull-up resistor to a valid logic-high voltage (up to 6.0V). The datasheet specifies a nominal 100kΩ pull-up to VDD in test conditions, but the resistor value may be adjusted based on rise-time and bus loading requirements. This design enables level-shifting between different voltage domains.
How do I configure the sense and reset delays for TPS3899DL30DSERQ1?
Sense delay (tD-SENSE) is set by connecting a capacitor between CTS pin and GND; reset delay (tD) is set similarly on CTR. With CTS/CTR open, delays default to 50µs and 80µs respectively. Using Equation 2 (tD-SENSE = 654666 × CCTS + 50µs) and Equation 3 (tD = 654666 × CCTR + 80µs), a 10nF capacitor yields ~6.2ms delay. Capacitor tolerance and temperature drift must be considered for timing-critical designs.
Can TPS3899DL30DSERQ1 monitor a voltage rail higher than its VDD supply?
Yes. The SENSE pin operates independently of VDD and accepts input voltages from 0V to 6.0V, even if VDD is as low as 0.85V. This allows TPS3899DL30DSERQ1 to supervise higher-voltage rails (e.g., 5V or 3.3V) while being powered from a lower auxiliary supply - a key feature for fault-isolated automotive architectures where VDD and monitored rails originate from separate regulators.
Is TPS3899DL30DSERQ1 qualified for automotive safety applications?
Yes. TPS3899DL30DSERQ1 is AEC-Q100 qualified for Grade 1 operation (–40°C to +125°C ambient), with HBM ESD rating of ±2kV and CDM rating of ±750V. While not ASIL-certified as a standalone safety element, its robustness, precision, and redundancy-enabling architecture (separate VDD/SENSE) make it suitable for use in ASIL-B/C system designs where voltage supervision contributes to functional safety goals.
TPS3899DL30DSERQ1 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:
- 3V
- 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)
TPS3899DL30DSERQ1 FAQ
1.How can I place an order for TPS3899DL30DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3899DL30DSERQ1 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 TPS3899DL30DSERQ1 reliable?
The price and inventory of TPS3899DL30DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3899DL30DSERQ1 is usually 5 days.
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TPS3899DL30DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3899DL30DSERQ1 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 TPS3899DL30DSERQ1?
For technical support, including TPS3899DL30DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3899DL30DSERQ1 requirements.
6.How does Aetrix verify that TPS3899DL30DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3899DL30DSERQ1 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 TPS3899DL30DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3899DL30DSERQ1?
All TPS3899DL30DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3899DL30DSERQ1, 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 TPS3899DL30DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3899DL30DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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