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Texas Instruments TPS3836E18DBVR
- Part No.:
- TPS3836E18DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836E18DBVR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
TPS3836E18DBVR from Texas Instruments is a nano-power voltage supervisor IC with active-low push-pull RESET output, 1.71 V threshold voltage (VIT), 10 ms/200 ms selectable reset delay, and 220 nA typical supply current. It monitors supply rails in ultra-low-power systems such as battery-powered microcontrollers and MSP430-based designs.
For engineers reviewing the TPS3836E18DBVR datasheet, TPS3836E18DBVR pinout, TPS3836E18DBVR application, or TPS3836E18DBVR equivalent, key selection criteria include its precise 1.71 V supervision level, SOT-23-5 package compatibility, manual reset support, and suitability for lithium coin-cell or single-cell Li-ion applications requiring sub-μA quiescent current.
Technical Context
The TPS3836E18DBVR implements a precision bandgap-based voltage comparator with internal hysteresis (40 mV typical) to reject noise-induced false resets. Its reset assertion occurs when VDD falls below 1.71 V, and deassertion requires VDD to rise above 1.75 V (VIT + VHYS) and remain stable for the selected delay time.
Reset delay is configured via the CT pin: grounded for 10 ms (typical), tied to VDD for 200 ms (typical). The MR input provides asynchronous manual reset with 0.3 μs propagation delay, and the push-pull RESET output drives logic directly without external pull-up components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports single-cell Li-ion (3.0–3.6 V), LiFePO₄ (2.5–3.6 V), and coin-cell (1.8–3.0 V) systems |
| Threshold Voltage (VIT) | 1.71 V (typical), ±2.9% over –40°C to 85°C - ensures reliable brownout detection at 1.8 V nominal rail |
| Supply Current (IDD) | 220 nA (typical) at VDD > VIT, VDD < 3 V - enables multi-year operation on CR2032 batteries |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - configurable timing for MCU boot stabilization or power-rail settling |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and guarantees defined logic levels |
| Hysteresis (VHYS) | 40 mV (typical) - prevents oscillation during slow-rising/falling supply transitions |
| Propagation Delay (tPHL) | 10 μs (max) from VDD drop to RESET assertion - ensures fast fault response without excessive sensitivity |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm, surface-mount, lead-free (NIPDAU), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Input | Main supply monitoring node; device asserts RESET when voltage falls below 1.71 V |
| GND | Ground Reference | Analog and digital ground return path; required for accurate threshold reference |
| CT | Delay Configuration | Connect to GND for 10 ms delay or to VDD for 200 ms delay; no external capacitor needed |
| MR | Manual Reset Input | Active-low asynchronous reset trigger; internal 30 kΩ pull-up allows direct MCU GPIO connection |
| RESET | Supervisor Output | Active-low push-pull output; sinks up to 2 mA and sources up to 100 μA - no external pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power consumption | 220 nA typical IDD enables >10-year battery life in always-on monitoring applications |
| Precision 1.71 V threshold | Guaranteed 1.66–1.74 V over temperature - matches 1.8 V system rails with margin for hysteresis |
| Selectably timed reset delay | Hardware-configured 10 ms or 200 ms delay avoids firmware dependency and ensures deterministic timing |
| Push-pull active-low RESET | Eliminates external pull-up resistor and associated leakage, simplifying BOM and layout |
| Integrated manual reset | MR pin with internal 30 kΩ pull-up supports direct connection to low-power GPIO without external components |
Applications
| Wearable Health Monitor | Smart Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG logging powered by CR2032 coin cell with real-time low-battery warning and graceful shutdown. IC Role / Device Role / Timing Role: Monitors 3.0 V regulated rail derived from coin cell; asserts RESET when voltage drops below 1.71 V to halt MCU and preserve data integrity. Use Value: 220 nA quiescent current extends battery life beyond 3 years; 200 ms delay prevents false resets during transient load spikes. |
Use Scenario: LoRaWAN environmental sensor node operating on primary lithium thionyl chloride (LiSOCl₂) cell with 10-year target lifetime. IC Role / Device Role / Timing Role: Supervises 3.6 V system rail; triggers hardware reset if voltage sags below 1.71 V during cold-start or aging. Use Value: Push-pull output ensures immediate, glitch-free reset signal to STM32L4 MCU; no pull-up resistor reduces leakage paths. |
| MSP430-Based Data Logger | Industrial IoT Edge Controller |
|
Use Scenario: Battery-backed data logger using MSP430FR5969, capturing temperature/humidity every 5 minutes with RTC wake-up. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection; CT pin tied to VDD selects 200 ms delay for full LDO stabilization before MCU initialization. Use Value: Matches TI's recommended TPS3836K33/MSP430 reference design; 40 mV hysteresis rejects noise from switching regulators. |
Use Scenario: DIN-rail mounted controller with isolated 5 V DC-DC supply powering ARM Cortex-M7 MCU and RS-485 transceivers. IC Role / Device Role / Timing Role: Secondary supervisor on 3.3 V FPGA I/O rail; detects undervoltage caused by upstream converter faults or cable disconnection. Use Value: 1.6–6 V operating range accommodates wide-input industrial supplies; SOT-23-5 footprint fits tight board space constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836K33DBVR | 3.3 V nominal supply; 2.93 V threshold; identical pinout, package, and features | Designed for 3.3 V systems (e.g., MSP430 with 3.3 V LDO); not suitable for 1.8 V rail monitoring | Select only when supervising 3.3 V rails - mismatched threshold invalidates use for 1.8 V applications. |
| MAX6375XR29+T | 2.93 V fixed threshold; 1.6 μA IDD; SOT-23-5; no manual reset or selectable delay | Lacks MR and CT pins; reset delay fixed at 140 ms; higher current limits battery life in ultra-low-power designs | Use where minimal feature set suffices and 1.6 μA supply current is acceptable; not drop-in compatible due to missing MR/CT functionality. |
Compared with TPS3836E18DBVR, TPS3836K33DBVR offers identical architecture but targets 3.3 V systems, while MAX6375XR29+T trades nano-power operation and configurability for simpler integration in less demanding applications.
Availability
TPS3836E18DBVR is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor networks, smart metering endpoints, and MSP430-based embedded systems requiring stable component supply across long production lifecycles.
Supply support for TPS3836E18DBVR 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 and precision analog technology.
The TPS383x family was engineered specifically for ultra-low-power voltage supervision in battery-critical applications, emphasizing nanoscale current consumption, factory-trimmed thresholds, and robust noise immunity for MSP430, CC26xx, and other TI ultra-low-power MCUs.
FAQ
What is the exact threshold voltage of the TPS3836E18DBVR?
The TPS3836E18DBVR has a nominal threshold voltage (VIT) of 1.71 V, with guaranteed minimum/maximum values of 1.66 V and 1.74 V across –40°C to 85°C. This value is factory-trimmed and applies specifically to the E18 variant, distinguishing it from other members of the TPS383x family such as K33 (2.93 V) or J25 (2.25 V).
Does the TPS3836E18DBVR require an external pull-up resistor on the RESET pin?
No, the TPS3836E18DBVR does not require an external pull-up resistor because it features an active-low push-pull RESET output. The output actively drives high (to VDD) and low (to GND), ensuring defined logic states without external components - unlike open-drain variants such as the TPS3838.
How is the reset delay time configured on the TPS3836E18DBVR?
The reset delay time on the TPS3836E18DBVR is configured solely by the CT pin: connect CT to GND for a 10 ms typical delay, or to VDD for a 200 ms typical delay. No external capacitor is required, and the selection is hardware-based - no firmware or configuration registers are involved.
Can the TPS3836E18DBVR be used with a 1.8 V supply rail?
Yes, the TPS3836E18DBVR is explicitly designed for 1.8 V nominal systems. Its 1.71 V threshold provides appropriate margin below the 1.8 V rail, and its 1.6 V to 6 V operating range fully encompasses 1.8 V supply conditions, including brownout detection during startup and discharge.
What is the maximum supply voltage rating for the TPS3836E18DBVR?
The TPS3836E18DBVR has an absolute maximum VDD rating of 7 V, but its recommended operating range is 1.6 V to 6 V. Operation above 6 V is outside specification and may compromise reliability or parametric performance, even if within absolute maximum limits.
TPS3836E18DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.71V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 10ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS3836E18DBVR FAQ
1.How can I place an order for TPS3836E18DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836E18DBVR 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 TPS3836E18DBVR reliable?
The price and inventory of TPS3836E18DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836E18DBVR is usually 5 days.
3.What payment methods are accepted for TPS3836E18DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3836E18DBVR transactions.
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4.How is shipping managed for TPS3836E18DBVR?
TPS3836E18DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3836E18DBVR 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 TPS3836E18DBVR?
For technical support, including TPS3836E18DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836E18DBVR requirements.
6.How does Aetrix verify that TPS3836E18DBVR is sourced from the original manufacturer or authorized distributors?
All TPS3836E18DBVR 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 TPS3836E18DBVR meets industry standards.
7.What is the process for return or replacement of TPS3836E18DBVR?
All TPS3836E18DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836E18DBVR, 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 TPS3836E18DBVR part is unused and in its original packaging.
Return procedure for TPS3836E18DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3836E18DBVR Tags
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