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Texas Instruments TPS3836L30DBVRG4
- Part No.:
- TPS3836L30DBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836L30DBVRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
TPS3836L30DBVRG4 from Texas Instruments is a nano-power voltage supervisor IC with active-low push-pull RESET output, 2.64 V threshold (VIT), selectable 10 ms or 200 ms reset delay, and 220 nA typical supply current. It monitors supply rails in ultra-low-power systems such as battery-backed microcontrollers and MSP430-based portable instrumentation.
For engineers reviewing the TPS3836L30DBVRG4 datasheet, TPS3836L30DBVRG4 pinout, TPS3836L30DBVRG4 application, or TPS3836L30DBVRG4 equivalent, key selection criteria include precise undervoltage detection at 2.64 V, manual reset capability, CT-pin configurable delay, SOT-23-5 package compatibility, and operation across –40°C to 85°C.
Technical Context
The TPS3836L30DBVRG4 implements a precision bandgap-referenced comparator with 40 mV hysteresis (VHYS) to prevent chatter near threshold. Its internal timer initiates after VDD exceeds VIT + VHYS, enabling controlled deassertion of RESET only after stable supply conditions are confirmed.
Reset assertion occurs when VDD falls below 2.64 V or MR is pulled low; propagation delay is 10 µs (tPHL). Delay time (tD) is set by CT pin: grounded for 10 ms, tied to VDD for 200 ms - both values are typified and production-tested per SLVS292F.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports Li-ion, coin-cell, and multi-rail embedded systems without external regulation. |
| Threshold Voltage (VIT) | 2.64 V (typical) - precisely matches 3.0 V nominal rail undervoltage detection with ±3% tolerance over temperature. |
| Supply Current (IDD) | 220 nA (typical) - enables >10-year battery life in always-on monitoring applications with 20 µAh coin cells. |
| Reset Delay Options | 10 ms or 200 ms - selected via CT pin connection; eliminates need for external RC timing components. |
| Output Type | Active-low push-pull - drives RESET directly without pull-up resistor, reducing BOM count and board space. |
| Hysteresis (VHYS) | 40 mV - prevents oscillation during slow-rising or noisy supply transitions near threshold. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-temperature portable equipment deployment. |
Pinout & Package
TPS3836L30DBVRG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input and monitored supply rail | Input voltage source; device asserts RESET when VDD drops below 2.64 V or rises above it with hysteresis and delay. |
| GND | Ground reference | Analog and digital ground return; must be low-impedance and decoupled with ≥0.1 µF ceramic capacitor. |
| CT | Delay configuration control | Connect to GND for 10 ms delay; connect to VDD for 200 ms delay - no external capacitor required. |
| MR | Manual reset input | Active-low asynchronous reset trigger; if unused, tie to VDD to minimize leakage current (≤100 µA). |
| RESET | Active-low push-pull output | Drives logic-low during fault; returns high after delay - no external pull-up needed, compatible with 1.8–6 V MCU I/O. |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 220 nA typical IDD enables decade-scale battery life in maintenance-free IoT sensors and wearables. |
| Precision fixed threshold | 2.64 V VIT with ±3% max variation ensures reliable 3.0 V rail supervision without calibration. |
| Selectably timed reset | Hardware-configurable 10/200 ms delay via CT pin eliminates timing inaccuracies from external RC drift or tempco. |
| Push-pull RESET output | Eliminates external pull-up resistor, reduces component count, and guarantees defined logic levels under all load conditions. |
| Manual reset support | Asynchronous MR input allows system-level forced reset independent of supply voltage condition. |
Applications
| Portable Medical Sensors | MSP430-Based Data Loggers |
|---|---|
Use Scenario: Continuous ECG patch monitors battery voltage while sampling biopotentials. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to halt MCU execution before brownout-induced data corruption. Use Value: 220 nA quiescent current extends single-CR2032 operation beyond 5 years; 200 ms delay prevents false resets during transient load spikes. |
Use Scenario: Environmental logger records temperature/humidity every 10 minutes using MSP430FR5969. IC Role / Device Role / Timing Role: Ensures clean power-on initialization and detects Li-SOCl₂ battery depletion below 2.64 V. Use Value: Push-pull RESET directly interfaces MSP430's RST/NMI pin without pull-up; CT = VDD configures 200 ms hold-off for stable wake-up. |
| Wireless Sensor Nodes | Industrial Handheld Terminals |
Use Scenario: LoRaWAN node powered by 3.6 V lithium thionyl chloride battery transmits sensor data hourly. IC Role / Device Role / Timing Role: Monitors main supply and triggers controlled shutdown before voltage collapse corrupts flash writes. Use Value: 2.64 V threshold aligns with battery end-of-life voltage; 10 ms delay enables fast recovery after brief voltage sag during RF transmit burst. |
Use Scenario: Ruggedized barcode scanner uses dual 1.8 V/3.3 V rails; TPS3836L30DBVRG4 supervises 3.3 V domain. IC Role / Device Role / Timing Role: Guarantees deterministic reset sequence during cold start and hot-swap battery replacement. Use Value: –40°C to +85°C rating ensures reliability in warehouse environments; MR pin enables user-initiated hard reset via front-panel button. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836K33DBVR | 3.3 V nominal threshold (2.93 V VIT); otherwise identical pinout, package, and features. | Designed for 3.3 V systems; unsuitable where 3.0 V rail tolerance requires tighter 2.64 V trip point. | Select TPS3836K33DBVR only when supervising 3.3 V supplies; verify VIT margin against actual rail variation. |
| TPS3808G33DBVR | Higher quiescent current (800 nA), fixed 200 ms delay, same 2.93 V threshold, SOT-23-6 package. | Lacks CT pin configurability and manual reset; not drop-in due to extra pin and different pinout. | Choose only if 200 ms delay suffices and MR functionality is unnecessary; requires PCB redesign for 6-pin layout. |
Compared with TPS3836K33DBVR and TPS3808G33DBVR, the TPS3836L30DBVRG4 uniquely delivers 2.64 V threshold accuracy, CT-selectable delay, and MR support in a 5-pin SOT-23 - making it the sole fit for 3.0 V rail supervision with flexible timing and reset control.
Availability
TPS3836L30DBVRG4 is available at Aetrix Electronics and suitable for portable medical sensors, MSP430-based data loggers, wireless sensor nodes, industrial handheld terminals, and battery-powered instrumentation requiring stable component supply across long product lifecycles.
Supply support for TPS3836L30DBVRG4 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 power management, signal chain, and microcontroller technologies.
The TPS383x family was designed specifically for ultra-low-power voltage supervision in battery-critical applications - emphasizing nanoscale current consumption, precision thresholds, and minimal external component count.
FAQ
What is the exact threshold voltage of the TPS3836L30DBVRG4?
The TPS3836L30DBVRG4 has a nominal threshold voltage (VIT) of 2.64 V, with guaranteed minimum 2.56 V and maximum 2.69 V across –40°C to +85°C per SLVS292F. This value is factory-trimmed and applies specifically to the 'L30' variant, distinguishing it from other members of the TPS383x family.
Does the TPS3836L30DBVRG4 require an external pull-up resistor on the RESET pin?
No, the TPS3836L30DBVRG4 features an active-low push-pull RESET output, meaning it actively drives both high and low states. Unlike open-drain variants (e.g., TPS3838), the TPS3836L30DBVRG4 does not require an external pull-up resistor - simplifying design and reducing BOM cost.
How is the reset delay time configured on the TPS3836L30DBVRG4?
The reset delay time on the TPS3836L30DBVRG4 is selected via the CT pin: connecting CT to GND sets tD = 10 ms (typical), while connecting CT to VDD sets tD = 200 ms (typical). No external capacitor is needed - the timing is internally generated and production-tested per datasheet specifications.
Can the TPS3836L30DBVRG4 operate from a 1.8 V supply?
Yes, the TPS3836L30DBVRG4 operates from 1.6 V to 6 V, so it functions reliably at 1.8 V. However, its 2.64 V threshold means it will assert RESET whenever VDD falls below that level - making it unsuitable for supervising 1.8 V rails. It is intended for 3.0 V systems where 2.64 V represents the undervoltage trip point.
What is the purpose of the MR pin on the TPS3836L30DBVRG4?
The MR (Manual Reset) pin on the TPS3836L30DBVRG4 is an active-low input that forces RESET assertion regardless of VDD level. When MR is pulled low, RESET goes low after 10 µs propagation delay. If unused, TI recommends tying MR to VDD to minimize leakage current - a critical consideration in nano-power designs.
TPS3836L30DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TPS3836L30DBVRG4 FAQ
1.How can I place an order for TPS3836L30DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836L30DBVRG4 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 TPS3836L30DBVRG4 reliable?
The price and inventory of TPS3836L30DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836L30DBVRG4 is usually 5 days.
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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 TPS3836L30DBVRG4?
For technical support, including TPS3836L30DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836L30DBVRG4 requirements.
6.How does Aetrix verify that TPS3836L30DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS3836L30DBVRG4 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 TPS3836L30DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS3836L30DBVRG4?
All TPS3836L30DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836L30DBVRG4, 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 TPS3836L30DBVRG4 part is unused and in its original packaging.
Return procedure for TPS3836L30DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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