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Texas Instruments TPS3836L30DBVT
- Part No.:
- TPS3836L30DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836L30DBVT.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:340
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Product details
Overview
TPS3836L30DBVT from Texas Instruments is a nano-power voltage supervisor IC with active-low push-pull RESET output, 2.64 V threshold voltage (VIT), 10 ms/200 ms selectable reset delay via CT pin, and 220 nA typical supply current. It monitors VDD in ultra-low-power systems such as battery-backed microcontrollers and MSP430-based portable instrumentation.
For engineers reviewing the TPS3836L30DBVT datasheet, TPS3836L30DBVT pinout, TPS3836L30DBVT application, or TPS3836L30DBVT equivalent, key selection criteria include precise 2.64 V undervoltage detection, manual reset support, SOT-23-5 package compatibility, and guaranteed operation from –40°C to 85°C.
Technical Context
The TPS3836L30DBVT integrates a precision bandgap reference, comparator with hysteresis (40 mV), and an internal timer for power-on reset generation. Its CT pin selects between two fixed delay modes: 10 ms (CT = GND) or 200 ms (CT = VDD), enabling flexible system initialization timing without external components.
It features a push-pull RESET output that drives actively high or low-no external pullup required-and supports manual reset assertion via MR pin. The device asserts RESET when VDD falls below 2.64 V or MR is pulled low, and deasserts only after VDD exceeds 2.64 V + 40 mV and the selected delay elapses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.6 V to 6 V - supports single-cell Li-ion (3.6 V), coin cell, and multi-rail embedded systems |
| Threshold voltage (VIT) | 2.64 V (typical) - precisely detects 3.0 V nominal supply undervoltage with ±3% tolerance over temperature |
| Reset delay options | 10 ms or 200 ms - selected by CT pin connection; enables fast recovery or robust brownout immunity |
| Supply current (IDD) | 220 nA (typical) at VDD > VIT, VDD < 3 V - extends battery life in always-on monitoring applications |
| Output type | Active-low push-pull - eliminates need for external pullup resistor and ensures defined logic state during reset |
| Hysteresis (VHYS) | 40 mV - prevents oscillation near threshold during slow-rising/falling supply transitions |
| Propagation delay (tPHL) | 10 µs (max) - ensures rapid response to supply faults without compromising noise immunity |
Pinout & Package
TPS3836L30DBVT is housed in a 5-pin SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, with gull-wing leads and RoHS-compliant NiPdAu finish. Thermal resistance RθJA = 153.6 °C/W enables operation up to 85°C ambient without heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input and monitored supply rail | Primary voltage source; device initiates reset when this drops below 2.64 V |
| GND | Reference ground | Return path for all internal circuitry and reset timing capacitor discharge |
| CT | Delay configuration control | Connect to GND for 10 ms delay or to VDD for 200 ms delay; no external capacitor needed |
| MR | Manual reset input | Active-low signal; forces RESET assertion independent of VDD level when pulled low |
| RESET | Active-low push-pull output | Drives low during fault or manual reset; returns high after VDD recovery + delay; no pullup required |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 220 nA typical IDD enables >10-year battery life in lithium coin cell applications |
| Precision threshold | 2.64 V ±3% over –40°C to 85°C ensures reliable 3.0 V system supervision without calibration |
| Selectably timed reset | Hardware-configurable 10 ms / 200 ms delay eliminates firmware dependency for power sequencing |
| Integrated hysteresis | 40 mV built-in VHYS prevents chatter during marginal supply conditions without external components |
| Push-pull RESET output | Eliminates external pullup resistor and guarantees known logic state during all operating modes |
Applications
| Portable Medical Sensors | MSP430-Based Data Loggers |
|---|---|
|
Use Scenario: Continuous monitoring of disposable wearable sensors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Voltage supervisor ensuring MCU reset occurs before battery voltage drops below 2.64 V, preventing corrupted memory writes. Use Value: 220 nA quiescent current extends sensor runtime beyond 5 years; 200 ms delay prevents false resets during transient load spikes. |
Use Scenario: Battery-powered environmental data logger sampling temperature/humidity every 10 minutes. IC Role / Device Role / Timing Role: Supervises 3.0 V regulated rail derived from Li-ion battery; triggers hard reset if voltage sags during RF transmission. Use Value: Push-pull RESET output interfaces directly with MSP430's RST/NMI pin without pullup; CT = VDD configures 200 ms hold time for stable wake-up. |
| Smart Utility Meters | Industrial IoT Edge Nodes |
|
Use Scenario: AMI meter with backup supercapacitor maintaining real-time clock and metrology during AC outage. IC Role / Device Role / Timing Role: Monitors supercap voltage to assert RESET before RTC corruption occurs below 2.64 V. Use Value: Guaranteed –40°C to 85°C operation ensures reliability in outdoor enclosures; 10 ms delay enables rapid reinitialization upon AC restoration. |
Use Scenario: Wireless vibration sensor node deployed in factory machinery with intermittent solar charging. IC Role / Device Role / Timing Role: Supervises 3.3 V LDO output feeding ARM Cortex-M0+ MCU and BLE radio. Use Value: Manual reset via MR allows field-triggered firmware reload; 2.64 V threshold aligns with minimum operating voltage of target MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836H30DBVT | 2.79 V threshold (vs. 2.64 V); same package, pinout, and delay options | Designed for 3.0 V systems with tighter regulation margin; less suitable for brownout detection near 2.6 V | Choose when system nominal supply is tightly regulated at 3.0 V and requires higher trip point |
| TPS3836K33DBVT | 2.93 V threshold (vs. 2.64 V); identical nano-power performance and SOT-23-5 footprint | Optimized for 3.3 V rails; not appropriate for detecting early undervoltage in 3.0 V or Li-ion (3.6 V) systems | Select when supervising 3.3 V logic supplies where 2.93 V trip provides adequate headroom |
Compared with TPS3836H30DBVT and TPS3836K33DBVT, the TPS3836L30DBVT provides the lowest threshold (2.64 V) in the family, making it uniquely suited for early-warning undervoltage detection in 3.0 V systems and aging lithium batteries where voltage sag begins below 3.0 V.
Availability
TPS3836L30DBVT is available at Aetrix Electronics and suitable for portable medical sensors, MSP430-based data loggers, smart utility meters requiring stable component supply across extended production lifecycles.
Supply support for TPS3836L30DBVT 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 IP.
The TPS3836L30DBVT belongs to TI's nano-power voltage supervisor product line, engineered specifically for battery-critical applications demanding sub-µA quiescent current and accurate, hysteresis-stabilized reset thresholds.
FAQ
What is the exact reset threshold voltage of the TPS3836L30DBVT?
The TPS3836L30DBVT has a nominal threshold voltage (VIT) of 2.64 V, with a guaranteed range of 2.56 V to 2.69 V over –40°C to 85°C. This value is factory-trimmed and specified in the Electrical Characteristics table of the SLVS292F datasheet. The TPS3836L30DBVT uses an internal voltage divider to set this fixed threshold, eliminating the need for external resistors.
Does the TPS3836L30DBVT require an external pullup resistor on the RESET pin?
No, the TPS3836L30DBVT does not require an external pullup resistor because it features an active-low push-pull RESET output. The output actively drives high (inactive state) and low (active state), ensuring a defined logic level at all times. This differs from open-drain variants like the TPS3838, which do require a pullup.
How is the reset delay time configured on the TPS3836L30DBVT?
The reset delay time on the TPS3836L30DBVT is selected by connecting the CT pin: to GND for a typical 10 ms delay, or to VDD for a typical 200 ms delay. No external capacitor is needed. The delay starts after VDD rises above VIT + VHYS and MR is high, and is fully hardware-configured without firmware involvement.
Can the TPS3836L30DBVT be used with a 1.8 V supply rail?
No-the TPS3836L30DBVT is rated for a minimum supply voltage of 1.6 V but is specifically calibrated for 3.0 V system supervision (2.64 V threshold). For 1.8 V rails, TI recommends the TPS3836E18DBVT (1.71 V threshold). Using TPS3836L30DBVT on 1.8 V would result in permanent RESET assertion since VDD never exceeds VIT.
What is the maximum allowable supply voltage for the TPS3836L30DBVT?
The absolute maximum supply voltage (VDD) for the TPS3836L30DBVT is 7 V, per the Absolute Maximum Ratings table. However, the Recommended Operating Conditions specify 1.6 V to 6 V. Exceeding 6 V risks violating functional specifications and may cause premature wear; sustained operation above 7 V can permanently damage the TPS3836L30DBVT.
TPS3836L30DBVT 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:
- 2.64V
- 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
TPS3836L30DBVT FAQ
1.How can I place an order for TPS3836L30DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836L30DBVT 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 TPS3836L30DBVT reliable?
The price and inventory of TPS3836L30DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836L30DBVT is usually 5 days.
3.What payment methods are accepted for TPS3836L30DBVT?
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4.How is shipping managed for TPS3836L30DBVT?
TPS3836L30DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3836L30DBVT 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 TPS3836L30DBVT?
For technical support, including TPS3836L30DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836L30DBVT requirements.
6.How does Aetrix verify that TPS3836L30DBVT is sourced from the original manufacturer or authorized distributors?
All TPS3836L30DBVT 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 TPS3836L30DBVT meets industry standards.
7.What is the process for return or replacement of TPS3836L30DBVT?
All TPS3836L30DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836L30DBVT, 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 TPS3836L30DBVT part is unused and in its original packaging.
Return procedure for TPS3836L30DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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