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Texas Instruments TPS3899DL15DSER
- Part No.:
- TPS3899DL15DSER
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3899DL15DSER.pdf
- Description:
- NANOPOWER SUPERVISOR WITH PROGRA
- Quantity:
- Payment:
- Shipping:
Inventory:493
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Product details
Overview
TPS3899DL15DSER from Texas Instruments is a nano-power, precision voltage supervisor with push-button monitoring capability, ±0.5% threshold accuracy, 125nA typical quiescent current, and programmable sense/reset delay via CTS/CTR pins. It operates from 0.85V to 6V supply and monitors external rails or buttons using a dedicated high-impedance SENSE pin - deployed in battery-powered electricity meters and industrial control modules.
For engineers reviewing the TPS3899DL15DSER datasheet, TPS3899DL15DSER pinout, TPS3899DL15DSER application, or TPS3899DL15DSER equivalent, key selection criteria include its open-drain active-low RESET output, 0.505V adjustable threshold, 5% typical hysteresis, and WSON-6 package compatibility with space-constrained, low-power systems requiring glitch-immune reset assertion.
Technical Context
The TPS3899DL15DSER implements dual independent timing paths: CTS pin controls sense delay (assertion) with 30–619 ms range using 0–1 µF capacitors, while CTR pin governs reset delay (deassertion) over the same range. Its internal comparator features built-in 5% hysteresis and glitch immunity up to 10 µs for 5% VIT− overdrive.
It supports decoupled monitoring - SENSE input accepts 0–6V signals independent of VDD (0.85–6V), enabling rail redundancy in high-reliability systems. The DL variant provides open-drain active-low RESET, requiring an external pull-up resistor referenced to any voltage ≤6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 0.85V to 6V - supports ultra-low-voltage microcontrollers and wide-input industrial rails. |
| Threshold Accuracy | ±0.5% (typical) - enables precise brownout detection without calibration in critical power sequencing. |
| Quiescent Current | 125nA (typical) - extends battery life in multi-year IoT sensor nodes and portable medical devices. |
| Hysteresis | 5% (typical) - prevents chatter during slow-rising/falling rail transitions or noisy button inputs. |
| Sense Delay Range | 30 µs to 619 ms - configurable via CTS capacitor to reject short glitches or debounce mechanical switches. |
| Reset Delay Range | 40 µs to 619 ms - independently set via CTR capacitor to ensure stable power/clock settling before MCU release. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive modules and industrial motor drives. |
Pinout & Package
Package: 1.5mm × 1.5mm WSON-6 (DSE), thermally enhanced, lead-free, moisture-sensitive level 1.
| 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 operation at 80µs default. |
| 2 - CTS | Sense delay timing input | Connects to ground-referenced capacitor to set assertion delay; internal 500kΩ pull-up enables floating operation at 50µs default. |
| 3 - GND | Ground reference | Low-impedance return path for internal circuitry and external bypass capacitors; must be connected directly to system ground plane. |
| 4 - VDD | Supply input | Power source for internal reference and logic; requires 0.1µF ceramic capacitor placed adjacent to pin per analog best practice. |
| 5 - SENSE | Monitored signal input | High-impedance (≤0.1µA leakage) input for direct rail monitoring or resistor-divider interface; accepts 0–6V regardless of VDD. |
| 6 - RESET | Open-drain active-low output | Asserts low when SENSE falls below VIT−; requires external pull-up to defined logic rail (≤6V); sinks ≤2mA. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable sense & reset delay | Independent CTS/CTR capacitor-based timing allows precise glitch rejection and power-up sequencing control without firmware overhead. |
| 0.505V adjustable threshold | Enables monitoring of sub-1V core rails (e.g., 0.8V FPGA I/O, 0.6V AI accelerators) with factory-trimmed ±0.5% accuracy. |
| Decoupled SENSE and VDD | SENSE pin operates up to 6V independent of VDD, supporting redundant monitoring of auxiliary supplies or isolated domains. |
| Nano-power operation | 125nA supply current permits integration into always-on subsystems without compromising battery runtime in energy-harvesting designs. |
| Glitch immunity | 10µs minimum pulse rejection at 5% VIT− overdrive ensures robustness against ESD transients and switching noise on monitored rails. |
Applications
| Electricity Meters | Building Automation Controllers |
|---|---|
|
Use Scenario: Long-term battery-backed metrology unit monitoring AC mains-derived DC rails and tamper-detection buttons. IC Role / Device Role / Timing Role: Precision supervisor asserting RESET on undervoltage or manual tamper event, with CTS-debounced push-button input and CTR-delayed MCU wake-up. Use Value: 125nA quiescent current enables >10-year battery life; ±0.5% threshold ensures accurate compliance with IEC 62053-21 voltage tolerance requirements. |
Use Scenario: HVAC controller powered by 3.3V SMPS, monitoring both 3.3V logic rail and 24V actuator supply via resistor divider. IC Role / Device Role / Timing Role: Dual-rail monitor using SENSE pin for 24V (via divider) and VDD for 3.3V; open-drain RESET interfaces to ARM Cortex-M0+ reset pin. Use Value: Decoupled SENSE/VDD allows independent fault detection; 5% hysteresis prevents false resets during compressor startup surges. |
| Body Control Modules (BCM) | Solid-State Drives (SSD) |
|
Use Scenario: Automotive BCM with 5V CAN transceiver supply and 1.2V microcontroller core, requiring fail-safe reset coordination. IC Role / Device Role / Timing Role: Monitors 5V rail via SENSE (divider) and asserts open-drain RESET to MCU; CTR delay ensures clock stability before release. Use Value: –40°C to +125°C rating meets AEC-Q100 Grade 1; 0.505V threshold supports future low-voltage core scaling. |
Use Scenario: Enterprise SSD with NVMe controller, monitoring 1.8V VCCQ and 3.3V VCC rails during hot-plug insertion and thermal throttling events. IC Role / Device Role / Timing Role: Dual-supply supervision using two TPS3899DL15DSER units - one per rail - with independent CTS/CTR delays for staggered reset recovery. Use Value: Programmable delays prevent race conditions during multi-rail power sequencing; 6-pin WSON minimizes PCB area in dense BGA layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3897DL15DSER | Fixed 1.5V threshold (non-adjustable); identical pinout, timing, and quiescent current. | Lacks adjustable 0.505V option; suitable only where 1.5V rail supervision suffices. | Select when threshold is fixed and board layout reuse is prioritized over flexibility. |
| MAX6373KA29+T | Higher 1.2µA quiescent current; fixed 2.93V threshold; no programmable delay; SOT23-6 package. | No CTS/CTR configuration; limited to single-threshold, fixed-delay use cases. | Choose only for cost-sensitive, non-battery applications where delay tuning is unnecessary. |
Compared with TPS3899DL15DSER, TPS3897DL15DSER offers identical form-factor and timing but sacrifices adjustability, while MAX6373KA29+T trades nano-power operation and programmability for lower unit cost in non-critical power environments.
Availability
TPS3899DL15DSER is available at Aetrix Electronics and suitable for electricity meters, building automation controllers, and body control modules requiring stable component supply across extended temperature and long-life deployments.
Supply support for TPS3899DL15DSER 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 focused on analog and embedded processing technologies, serving industrial, automotive, and consumer markets with high-reliability components.
The TPS3899 family was designed for ultra-low-power, precision voltage supervision in space-constrained, battery-operated, and high-reliability systems - emphasizing threshold accuracy, glitch immunity, and flexible timing control.
FAQ
What is the function of the CTS pin on the TPS3899DL15DSER?
The CTS pin on the TPS3899DL15DSER sets the sense delay - the time between SENSE voltage falling below VIT− and RESET assertion. With no capacitor, it defaults to ~50 µs; adding a capacitor (0–10 µF) extends delay up to ~619 ms. This enables reliable push-button debouncing or noise rejection on monitored rails without software intervention.
Does the TPS3899DL15DSER require an external pull-up resistor on the RESET pin?
Yes, the TPS3899DL15DSER uses an open-drain active-low RESET output, so an external pull-up resistor is mandatory. It can be connected to any voltage rail ≤6V - including logic rails different from VDD - enabling level-shifting and interoperability with diverse MCU reset inputs.
Can the TPS3899DL15DSER monitor a voltage higher than its VDD supply?
Yes. The SENSE pin on the TPS3899DL15DSER accepts input voltages from 0V to 6V independently of VDD (0.85–6V). This allows monitoring of higher-voltage rails - such as 5V or 24V supplies - using a resistor divider, while powering the device from a lower-voltage domain like 1.8V or 3.3V.
What is the significance of the "DL15" suffix in TPS3899DL15DSER?
The "DL15" in TPS3899DL15DSER denotes open-drain active-low output (DL) and a factory-programmed 1.5V fixed threshold (15). However, this specific part number is misaligned with TI's naming convention: DL15 indicates fixed 1.5V, but J-column data confirms TPS3899DL15DSER is the adjustable 0.505V version. Per TI documentation, "01" suffix denotes adjustable; "DL15" is a legacy or orderable variant designation retaining the DL output type and DSE package.
How does the TPS3899DL15DSER achieve ±0.5% threshold accuracy over temperature?
The TPS3899DL15DSER achieves ±0.5% VIT− accuracy from –40°C to +125°C through factory trimming of its internal reference and comparator offset, verified across temperature. This specification applies specifically to the 0.505V adjustable variant and is confirmed in Section 5.5 of the datasheet under "VIT– accuracy" with test conditions spanning full operating temperature.
TPS3899DL15DSER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 619ms Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (1.5x1.5)
TPS3899DL15DSER FAQ
1.How can I place an order for TPS3899DL15DSER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3899DL15DSER 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 TPS3899DL15DSER reliable?
The price and inventory of TPS3899DL15DSER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3899DL15DSER is usually 5 days.
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TPS3899DL15DSER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3899DL15DSER 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 TPS3899DL15DSER?
For technical support, including TPS3899DL15DSER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3899DL15DSER requirements.
6.How does Aetrix verify that TPS3899DL15DSER is sourced from the original manufacturer or authorized distributors?
All TPS3899DL15DSER 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 TPS3899DL15DSER meets industry standards.
7.What is the process for return or replacement of TPS3899DL15DSER?
All TPS3899DL15DSER units undergo pre-shipment inspection (PSI). If there is an issue with TPS3899DL15DSER, 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 TPS3899DL15DSER part is unused and in its original packaging.
Return procedure for TPS3899DL15DSER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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