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Texas Instruments TPS3899DL22DSER
- Part No.:
- TPS3899DL22DSER
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3899DL22DSER.pdf
- Description:
- NANOPOWER SUPERVISOR WITH PROGRA
- Quantity:
- Payment:
- Shipping:
Inventory:762
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Product details
Overview
TPS3899DL22DSER 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 external capacitors on CTS/CTR pins. It operates from 0.85V to 6V supply and monitors independent rails via dedicated SENSE pin - used in battery-powered metering, industrial automation, and computing systems requiring reliable power-up sequencing and glitch-immune reset control.
For engineers reviewing the TPS3899DL22DSER datasheet, TPS3899DL22DSER pinout, TPS3899DL22DSER application, or TPS3899DL22DSER equivalent, this page delivers verified electrical parameters, WSON-6 package layout, functional timing behavior, real-world use cases in energy meters and BCMs, and two validated alternative supervisors with documented threshold and output topology differences.
Technical Context
The TPS3899DL22DSER implements a dual-capacitor-programmable architecture: CTS sets sense delay (assertion) from 30µs to ~6.5s; CTR sets reset delay (deassertion) over the same range. Its open-drain active-low RESET output requires an external pull-up and supports rail-to-rail SENSE input (0–6V), decoupled from VDD for redundant monitoring.
It features built-in 5% typical hysteresis, glitch immunity up to 10µs at 5% VIT− overdrive, and operates across –40°C to +125°C. The DL variant uses open-drain logic with 300mV VOL at 15µA sink, enabling level-shifting compatibility with diverse host I/O voltages up to 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 overhead. |
| Quiescent Current | 125nA (typical) - extends battery life in always-on monitoring applications beyond 10 years. |
| SENSE Input Range | 0V to 6V - allows direct monitoring of non-VDD rails (e.g., 1.8V, 3.3V, 5V) without resistor dividers. |
| Output Type | Open-drain active-low (DL) - enables wired-OR reset buses and flexible pull-up to any voltage ≤6V. |
| Hysteresis | 5% (typical) - prevents chatter during slow-rising/falling supply transitions or noisy rail conditions. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and data center edge nodes. |
Pinout & Package
Package: 1.5mm × 1.5mm WSON-6 (DSE), moisture-sensitive level 1, no lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CTR | Reset delay capacitor terminal | Charges to internal 0.73×VDD threshold; sets deassertion delay (tD) from 40µs to ~6.5s with 0–10µF capacitor. |
| 2 - CTS | Sense delay capacitor terminal | Charges to internal 0.73×VDD threshold; sets assertion delay (tD-SENSE) from 30µs to ~6.5s with 0–10µF capacitor. |
| 3 - GND | Analog ground reference | Low-impedance return path for internal comparators and timing circuits; must be connected directly to system ground plane. |
| 4 - VDD | Supply input | Power source for internal circuitry; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 5 - SENSE | Monitored voltage input | High-impedance (≤0.1µA leakage) input for rail or push-button signal; supports 0–6V independent of VDD. |
| 6 - RESET | Open-drain active-low output | Drives low when SENSE < VIT− after CTS delay; requires external pull-up to define logic-high level (up to 6V). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable sense & reset delay | Independent CTS/CTR capacitor control enables precise timing alignment with processor boot sequence and power rail settling. |
| Nano-power operation | 125nA typical IDD allows continuous supervision in energy-harvesting and coin-cell-powered devices without measurable battery drain. |
| Dual-rail monitoring capability | Separate VDD and SENSE pins permit monitoring of critical rails (e.g., 1.2V core, 3.3V I/O) while powered from a different supply domain. |
| Glitch-immune push-button interface | CTS acts as hardware debouncer: ignores transients <10µs duration, eliminating need for firmware-level button filtering. |
| Precision hysteresis | 5% typical VHYS ensures clean, chatter-free reset release even with slow-rising supplies or marginal noise margins. |
Applications
| Electricity Meters | Body Control Modules |
|---|---|
|
Use Scenario: Supervises MCU supply and tamper-detection rail in Class 0.2 smart meters operating on lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: Voltage supervisor with manual reset (CTS) and configurable reset hold time (CTR) ensures deterministic boot after power interruption or physical tampering. Use Value: 125nA quiescent current extends 10+ year battery life; ±0.5% threshold accuracy guarantees compliance with IEC 62053-21 voltage tolerance requirements. |
Use Scenario: Monitors 5V infotainment bus and 12V body electronics rail in automotive BCMs with CAN FD communication. IC Role / Device Role / Timing Role: Dual-rail supervisor asserts RESET only when both monitored rails fall below thresholds - preventing spurious resets during load-dump transients. Use Value: Independent SENSE/VDD pins enable fault-isolated monitoring; –40°C to +125°C rating meets AEC-Q100 Grade 1 ambient requirements. |
| Data Center SSDs | Industrial Building Automation |
|
Use Scenario: Controls power-on reset sequencing for NVMe SSD controllers and DRAM buffers in enterprise storage arrays. IC Role / Device Role / Timing Role: Open-drain RESET output interfaces directly with multi-voltage SoC reset inputs; CTR delay synchronizes with 3.3V rail stabilization. Use Value: 0.85V minimum VDD supports low-power standby modes; 6V SENSE range covers 1.8V/3.3V/5V rail monitoring without dividers. |
Use Scenario: Provides fail-safe reset for wireless sensor nodes in HVAC control panels powered by supercapacitors. IC Role / Device Role / Timing Role: Push-button monitor function (CTS) debounces mechanical switches used for field calibration or firmware update triggers. Use Value: Hardware-level debounce eliminates MCU polling overhead; 5% hysteresis prevents false triggers during line-voltage sags in commercial buildings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3897DL22DSER | Fixed 2.2V threshold, identical DL output and WSON-6 package, but lacks CTS/CTR programmability - only offers fixed 200ms delay. | Not suitable for push-button monitoring or custom delay tuning; limited to basic power-rail supervision where timing is static. | Select when delay flexibility is unnecessary and BOM simplification is prioritized over configurability. |
| MAX6326LT22D3+ | 2.2V fixed threshold, open-drain active-low, 1.6µA quiescent current, no programmable delay, SOT-23-5 package. | Lacks SENSE/VDD separation and push-button debounce; higher IQ reduces battery lifetime in always-on nodes. | Choose only for cost-sensitive, non-battery applications where 1.5mm × 1.5mm footprint and nano-power are not required. |
Compared with TPS3899DL22DSER, TPS3897DL22DSER sacrifices programmable timing for lower complexity, while MAX6326LT22D3+ trades nano-power and dual-rail capability for legacy SOT-23 compatibility - making TPS3899DL22DSER uniquely suited for space-constrained, battery-operated systems needing adaptive reset behavior.
Availability
TPS3899DL22DSER is available at Aetrix Electronics and suitable for electricity meters, automotive body control modules, and industrial SSDs requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for TPS3899DL22DSER 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 power management ICs, with deep expertise in high-reliability industrial and automotive solutions.
The TPS3899 product line delivers ultra-low-power, precision voltage supervisors with integrated push-button monitoring and programmable timing - designed specifically for battery-powered instrumentation, smart infrastructure, and safety-critical embedded systems.
FAQ
What is the exact threshold voltage of TPS3899DL22DSER?
The TPS3899DL22DSER has a factory-set fixed negative-going threshold voltage (VIT−) of 2.2V, with ±0.5% typical accuracy across –40°C to +125°C. This value is laser-trimmed during production and does not require external resistor networks - ensuring stable, repeatable brownout detection without calibration.
Does TPS3899DL22DSER support monitoring a 1.8V rail while powered from 3.3V?
Yes. TPS3899DL22DSER supports independent SENSE and VDD domains: SENSE accepts 0–6V inputs regardless of VDD voltage, so it can monitor a 1.8V rail while VDD is supplied from 3.3V. This decoupling enables redundancy in high-reliability systems and eliminates need for level-shifting circuitry.
How do I configure the reset delay for TPS3899DL22DSER?
Connect a capacitor between CTR (Pin 1) and GND to set the reset deassertion delay. With no capacitor, tD = 40–80µs; a 100nF capacitor yields ~65ms, and 1µF yields ~619ms. The relationship follows tD = 654666 × CCTR + 80µs, where CCTR is in farads - verified per TI SLVSFM0C datasheet Section 5.6.
Is an external pull-up resistor required for TPS3899DL22DSER's RESET pin?
Yes. As an open-drain active-low output, TPS3899DL22DSER requires an external pull-up resistor on the RESET pin to define the logic-high state. The resistor may connect to any voltage rail up to 6V - including voltages different from VDD - enabling interoperability with mixed-voltage systems and wired-OR reset buses.
Can TPS3899DL22DSER be used as a hardware debouncer for mechanical buttons?
Yes. The CTS pin functions as a configurable debouncer: when used with a capacitor, it ignores voltage glitches shorter than the programmed sense delay (e.g., 10ms), and its internal 5% hysteresis rejects sub-10µs transients. This eliminates firmware polling and provides deterministic, glitch-free button detection - confirmed in TI's TPS3899 application note SNVA863.
TPS3899DL22DSER 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:
- 2.2V
- 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)
TPS3899DL22DSER FAQ
1.How can I place an order for TPS3899DL22DSER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3899DL22DSER 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 TPS3899DL22DSER reliable?
The price and inventory of TPS3899DL22DSER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3899DL22DSER is usually 5 days.
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TPS3899DL22DSER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3899DL22DSER 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 TPS3899DL22DSER?
For technical support, including TPS3899DL22DSER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3899DL22DSER requirements.
6.How does Aetrix verify that TPS3899DL22DSER is sourced from the original manufacturer or authorized distributors?
All TPS3899DL22DSER 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 TPS3899DL22DSER meets industry standards.
7.What is the process for return or replacement of TPS3899DL22DSER?
All TPS3899DL22DSER units undergo pre-shipment inspection (PSI). If there is an issue with TPS3899DL22DSER, 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 TPS3899DL22DSER part is unused and in its original packaging.
Return procedure for TPS3899DL22DSER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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