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Texas Instruments TPS3839E16DQNT
- Part No.:
- TPS3839E16DQNT
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
TPS3839E16DQNT.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 4X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,738
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Product details
Overview
TPS3839E16DQNT from Texas Instruments is an ultralow-power voltage supervisor IC designed to monitor single-rail supply voltages in battery-critical systems. It features a factory-trimmed 1.52 V reset threshold, 150 nA typical supply current at 25°C, push-pull RESET output, and valid operation down to 0.6 V VDD - enabling reliable power-on reset in sub-1.8 V microcontroller applications such as glucose monitors and wearables.
For engineers reviewing the TPS3839E16DQNT datasheet, TPS3839E16DQNT pinout, TPS3839E16DQNT application, or TPS3839E16DQNT equivalent, key selection considerations include its 1.52 V threshold accuracy (±1% at 25°C), 200 ms reset delay, −40°C to +85°C operating range, X2SON-4 package compatibility, and immunity to fast VDD transients per TI SBVS193D.
Technical Context
The TPS3839E16DQNT implements a precision bandgap-based voltage comparator with hysteresis (15 mV typical) to reject noise and transients on the VDD rail. Its internal sampling architecture draws only ~15 µA for ~200 µs during each measurement cycle, sustaining average quiescent current at 150 nA.
This device operates without a manual reset (MR) input - distinguishing it from the TPS3831 family - and delivers a push-pull active-low RESET signal that drives directly into microcontroller reset pins. It asserts RESET when VDD falls below 1.482 V (min) and holds it for 120–350 ms after VDD rises above the threshold plus hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.52 V (factory-trimmed, ±1% accuracy at 25°C); ensures precise brownout detection for 1.5 V–1.8 V logic rails |
| Supply Current | 150 nA typical at 25°C; enables >10-year battery life in coin-cell–powered wearables |
| Operating Voltage | 0.9 V to 6.5 V; supports single alkaline, Li-ion, and multi-rail embedded systems |
| Reset Delay | 200 ms typical; provides sufficient hold time for microcontroller initialization and flash programming |
| VDD Valid Output | 0.6 V minimum; guarantees defined RESET state during deep discharge or cold-start conditions |
| Output Type | Push-pull active-low RESET; eliminates need for external pull-up resistor and reduces BOM count |
| Temperature Range | −40°C to +85°C; qualified for industrial and portable medical equipment environments |
Pinout & Package
TPS3839E16DQNT is housed in a 1.00 mm × 1.00 mm, 4-pin X2SON (DQN) package with exposed thermal pad. Pin 1 = VDD, Pin 2 = GND, Pin 3 = RESET, Pin 4 = NC (no internal connection). The thermal pad must be connected to ground or floating copper for mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Accepts 0.9–6.5 V; powers internal comparator and output stage; requires 0.1 µF local bypass for high-impedance sources |
| GND (Pin 2) | Ground reference | Return path for supply current and RESET output; must be low-impedance to avoid false resets during sampling bursts |
| RESET (Pin 3) | Active-low reset output | Push-pull driver capable of sinking 2 mA; asserts low when VDD < 1.482 V and holds for ≥120 ms after recovery |
| NC (Pin 4) | No internal connection | Unbonded terminal; may be left unconnected or tied to GND for mechanical reinforcement; no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 150 nA typical enables multi-year operation on CR2032 batteries in metering and wearable devices |
| Factory-trimmed threshold | 1.52 V ±1% eliminates external resistor divider calibration and improves system-level voltage margin control |
| Transient immunity | Rejects VDD glitches ≤20 µs wide and <15% amplitude drop below VIT–, reducing false resets in noisy environments |
| Wide supply range | 0.9–6.5 V operation supports direct monitoring of single-cell alkaline (0.9–1.7 V), LiFePO₄ (2.0–3.6 V), and 3.3/5 V rails |
| Defined low-VDD behavior | Valid RESET state guaranteed down to 0.6 V VDD - critical for safe shutdown sequencing in ultra-low-voltage MCUs |
Applications
| Glucose Monitoring Systems | Wearable Fitness Trackers |
|---|---|
Use Scenario: Continuous blood glucose sensing powered by coin-cell battery with strict 10-year shelf-life requirement. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during battery voltage sag below 1.52 V to prevent corrupted sensor readings or EEPROM writes. Use Value: 150 nA supply current extends usable battery life by >30% versus 1 µA alternatives; 0.6 V POR ensures deterministic reset even at end-of-discharge. |
Use Scenario: Arm-worn activity tracker using single alkaline cell with dynamic load switching between BLE radio and accelerometer. IC Role / Device Role / Timing Role: Monitors VDD rail to initiate controlled MCU reset when cell voltage drops below 1.52 V during high-current BLE transmit bursts. Use Value: 200 ms reset delay prevents spurious resets from transient dips; push-pull output eliminates external pull-up, saving PCB area and cost. |
| Smart Utility Meters | Industrial IoT Sensors |
Use Scenario: Battery-backed AMI meter operating in −40°C to +85°C outdoor enclosures with infrequent RF transmission. IC Role / Device Role / Timing Role: Ensures reliable power-on reset and brownout protection across full temperature range, especially during cold-start at −40°C. Use Value: ±1% threshold accuracy over temperature maintains tight voltage margin control; 1.52 V threshold matches common LDO output rails in meter SoCs. |
Use Scenario: Wireless vibration sensor node powered by energy harvesting (e.g., piezoelectric) with intermittent 3.3 V rail availability. IC Role / Device Role / Timing Role: Detects valid VDD presence and triggers MCU wake-up only after stable 3.3 V is established, avoiding partial initialization. Use Value: 0.9 V minimum operating voltage allows early detection of harvested energy accumulation; 150 nA draw minimizes parasitic drain during sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3831E16DQNT | Includes MR input pin; same 1.52 V threshold, 150 nA current, and X2SON-4 package | Required where system-level manual reset initiation (e.g., watchdog timeout or button press) is needed | Select TPS3831E16DQNT if MR functionality is required; otherwise TPS3839E16DQNT offers lower pin count and simpler layout |
| MAX6371XR22+T | 2.2 V fixed threshold; 0.8 µA supply current; SOT23-3 package; no hysteresis spec provided | Suitable for higher-voltage rails (2.2 V+) but consumes >5× more current and lacks transient rejection data | Choose MAX6371XR22+T only for 2.2 V systems where cost and footprint outweigh ultralow-power requirements |
Compared with TPS3831E16DQNT, the TPS3839E16DQNT saves one pin and simplifies routing but removes manual reset capability; versus MAX6371XR22+T, it delivers 5.3× lower quiescent current and verified transient immunity - critical for battery longevity and reliability in portable medical and industrial edge nodes.
Availability
TPS3839E16DQNT is available at Aetrix Electronics and suitable for glucose monitors, wearable fitness trackers, smart utility meters, and industrial IoT sensors requiring stable component supply across extended temperature ranges and multi-year battery life.
Supply support for TPS3839E16DQNT 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 low-power design, precision analog, and industrial-grade reliability.
The TPS383x product line was developed specifically for ultralow-power voltage supervision in portable, battery-constrained, and medical-grade applications - prioritizing nanoscale current consumption, factory-trimmed accuracy, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of the TPS3839E16DQNT?
The TPS3839E16DQNT has a factory-trimmed negative-going threshold voltage (VIT–) of 1.52 V, with a tolerance of ±1% at 25°C. Minimum and maximum values across temperature are specified as 1.482 V and 1.543 V respectively per TI SBVS193D Electrical Characteristics table. This 1.52 V threshold is optimized for monitoring 1.5 V–1.8 V supply rails in portable electronics.
Does the TPS3839E16DQNT support manual reset functionality?
No, the TPS3839E16DQNT does not include a manual reset (MR) input. Unlike the TPS3831 variant, the TPS3839E16DQNT is a 3-terminal supervisory device (VDD, GND, RESET) with no MR pin. Manual reset capability is exclusive to the TPS3831 family; the TPS3839E16DQNT relies solely on VDD monitoring for reset assertion.
What package type and dimensions does the TPS3839E16DQNT use?
The TPS3839E16DQNT uses the X2SON-4 (DQN) package: a 1.00 mm × 1.00 mm, 4-pin leadless package with an exposed thermal pad. Pin 1 = VDD, Pin 2 = GND, Pin 3 = RESET, Pin 4 = NC. The thermal pad must be soldered to a PCB copper area for mechanical stability and is not electrically connected internally.
How long is the reset delay time for the TPS3839E16DQNT?
TPS3839E16DQNT provides a typical reset delay time (td) of 200 ms after VDD rises above the threshold voltage plus hysteresis. The datasheet specifies a minimum of 120 ms and maximum of 350 ms across temperature and process variation. This delay ensures sufficient hold time for microcontroller core and peripheral initialization before release from reset.
Can the TPS3839E16DQNT operate with supply voltages below 1.0 V?
Yes, the TPS3839E16DQNT is fully specified to operate from 0.9 V to 6.5 V. Its power-on reset (POR) circuit remains functional down to 0.6 V VDD, guaranteeing a defined RESET state even during deep battery discharge. At 0.9 V, supply current remains near 150 nA, making it suitable for single alkaline or NiMH cell applications where voltage decays below 1.0 V.
TPS3839E16DQNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.52V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 120ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-X2SON (1x1)
TPS3839E16DQNT FAQ
1.How can I place an order for TPS3839E16DQNT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3839E16DQNT 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 TPS3839E16DQNT reliable?
The price and inventory of TPS3839E16DQNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3839E16DQNT is usually 5 days.
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4.How is shipping managed for TPS3839E16DQNT?
TPS3839E16DQNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3839E16DQNT 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 TPS3839E16DQNT?
For technical support, including TPS3839E16DQNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3839E16DQNT requirements.
6.How does Aetrix verify that TPS3839E16DQNT is sourced from the original manufacturer or authorized distributors?
All TPS3839E16DQNT 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 TPS3839E16DQNT meets industry standards.
7.What is the process for return or replacement of TPS3839E16DQNT?
All TPS3839E16DQNT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3839E16DQNT, 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 TPS3839E16DQNT part is unused and in its original packaging.
Return procedure for TPS3839E16DQNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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