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Texas Instruments TPS3836J25DBVR
- Part No.:
- TPS3836J25DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3836J25DBVR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,022
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Product details
Overview
TPS3836J25DBVR from Texas Instruments is a nano-power voltage supervisor IC with active-low push-pull RESET output, designed for precision undervoltage monitoring in battery-powered systems. It features a 2.25 V threshold (VIT), 220 nA typical supply current, selectable 10 ms or 200 ms reset delay via CT pin, and operates across –40°C to 85°C. It is used in MSP430-based portable devices to ensure reliable power-on and brownout reset.
For engineers reviewing the TPS3836J25DBVR datasheet, TPS3836J25DBVR pinout, TPS3836J25DBVR application, or TPS3836J25DBVR equivalent, this page delivers verified specifications, validated pin functions, confirmed SOT-23-5 package mapping, real-world timing behavior (tD = 10/200 ms), and two technically documented alternative parts for low-power supervisory design.
Technical Context
The TPS3836J25DBVR integrates a precision bandgap reference, comparator with hysteresis (VHYS = 40 mV), and an internal timer for configurable reset assertion timing. Its VDD input monitors supply voltage down to 1.6 V, asserting RESET when VDD falls below 2.25 V (typical) and deasserting only after VDD rises above 2.29 V (2.25 V + 40 mV) and sustains for the selected delay period.
Manual reset (MR) provides asynchronous reset control with 0.3 µs propagation delay, while the CT pin selects between 10 ms (CT = GND) and 200 ms (CT = VDD) delay modes-both guaranteed over full temperature range. The push-pull output eliminates need for external pull-up resistors and supports direct interfacing with microcontroller reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6 V - supports Li-ion (3.6 V), coin cell (3 V), and multi-rail embedded systems without level shifting. |
| Threshold Voltage (VIT) | 2.25 V (typical), 2.18–2.29 V (min/max) - precisely matches 2.5 V nominal rail supervision with 3% hysteresis margin. |
| Supply Current (IDD) | 220 nA (typical) at VDD > VIT, VDD < 3 V - enables >10-year battery life in always-on monitoring applications. |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - factory-trimmed timing ensures deterministic system initialization without external RC components. |
| Output Type | Active-low push-pull - drives MCU reset pin directly; no external pull-up required; sinks 2 mA at 0.4 V (VDD = 1.8 V). |
| Propagation Delay (tPHL) | 10 µs (max) from VDD drop to RESET assertion - guarantees fast fault response before processor state corruption. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended commercial environments including portable medical and metering equipment. |
Pinout & Package
TPS3836J25DBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in handheld and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Input / Monitoring Node | Main supply voltage input; device monitors this node for undervoltage events; absolute max rating 7 V. |
| GND | Reference Ground | Analog and digital ground return; must be low-impedance connection to minimize noise-induced false resets. |
| CT | Delay Configuration Control | Connect to GND for 10 ms delay or to VDD for 200 ms delay; high-impedance input draws <25 nA. |
| MR | Manual Reset Input | Active-low asynchronous reset trigger; internal 30 kΩ pull-up allows floating-to-VDD default; 0.3 µs response. |
| RESET | Active-Low Push-Pull Output | Drives logic-low during fault; returns high after delay; compatible with standard CMOS reset inputs; no external resistor needed. |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 220 nA typical IDD enables decade-scale battery life in always-on supervision of lithium coin cells or energy-harvesting nodes. |
| Precision 2.25 V threshold | Guaranteed 2.18–2.29 V over temperature ensures reliable detection of 2.5 V rail collapse without false triggering. |
| Selectably timed reset delay | Factory-calibrated 10 ms / 200 ms options eliminate external timing capacitors and reduce BOM count and layout area. |
| Push-pull active-low RESET | Direct interface to microcontroller reset pins; eliminates pull-up resistor, reduces leakage path, and improves noise immunity. |
| Manual reset with fast response | 0.3 µs MR-to-RESET propagation enables hardware-triggered recovery independent of supply voltage conditions. |
Applications
| Portable Medical Sensors | Lithium-Ion Battery Management |
|---|---|
|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring fail-safe reset if supply drops below 2.3 V during RF transmission. IC Role / Device Role / Timing Role: Supervises VDD and asserts active-low RESET to MSP430FR2355 within 10 µs of threshold breach; holds reset for 200 ms after recovery to prevent premature wake-up. Use Value: Prevents firmware lockup during battery sag; extends usable battery life by minimizing quiescent current to 220 nA. |
Use Scenario: Smart smoke detector using 3.6 V Li-ion cell, where MCU must reset cleanly if cell voltage falls below 2.5 V during cold-weather operation. IC Role / Device Role / Timing Role: Monitors battery voltage at VDD pin; triggers RESET on undervoltage; uses CT = VDD to enforce 200 ms stabilization window before release. Use Value: Eliminates need for discrete comparator + RC timer; ensures robust reset under temperature-varying load transients. |
| Industrial Wireless Transceivers | Low-Power Data Loggers |
|
Use Scenario: LoRaWAN node powered by primary lithium thionyl chloride (LiSOCl₂) cell, operating intermittently for 15+ years. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection for CC1312R MCU; MR tied to VDD for automatic startup; CT = GND for fast 10 ms initialization. Use Value: Guarantees deterministic boot sequence with sub-µA current draw-critical for ultra-long-life deployments. |
Use Scenario: Environmental sensor node logging temperature/humidity every 5 minutes using AAA alkaline batteries. IC Role / Device Role / Timing Role: Supervises 3.0 V LDO output feeding MSP430G2553; asserts RESET if LDO collapses due to battery depletion or load surge. Use Value: Prevents corrupted EEPROM writes during brownout; hysteresis (40 mV) avoids chatter near threshold during gradual discharge. |
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 threshold (2.93 V VIT); otherwise identical pinout, timing, and current specs. | Designed for 3.3 V systems; not suitable for 2.5 V rail supervision without risk of premature reset. | Select TPS3836K33DBVR only when supervising 3.3 V supplies; TPS3836J25DBVR is correct for 2.5 V rails. |
| MAX6326XR25T | 2.5 V threshold, 1.6 µA IDD, fixed 200 ms delay, SOT-23-5 package; no CT pin or manual reset. | Lacks configurable delay and MR input; higher quiescent current limits battery life in ultra-low-power designs. | Choose MAX6326XR25T only if delay configurability and manual reset are unnecessary and cost is prioritized over current. |
Compared with TPS3836K33DBVR, TPS3836J25DBVR provides accurate 2.5 V rail supervision instead of 3.3 V; compared with MAX6326XR25T, it delivers 7× lower supply current and flexible delay/manual reset-critical for energy-constrained MSP430 designs.
Availability
TPS3836J25DBVR is available at Aetrix Electronics and suitable for portable medical sensors, lithium-ion battery management systems, industrial wireless transceivers, and low-power data loggers requiring stable component supply across long production lifecycles.
Supply support for TPS3836J25DBVR 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 delivering analog and embedded processing solutions, with over 50 years of innovation in power management and signal chain technologies.
The TPS383x family was engineered specifically for ultra-low-power voltage supervision in battery-critical applications-enabling reliable reset functionality in MSP430, CC-family, and other nano-power microcontrollers.
FAQ
What is the exact reset threshold voltage of the TPS3836J25DBVR?
The TPS3836J25DBVR has a nominal threshold voltage (VIT) of 2.25 V, with guaranteed min/max values of 2.18 V and 2.29 V across –40°C to +85°C. This is factory-trimmed and specified in the Electrical Characteristics table of the SLVS292F datasheet. The TPS3836J25DBVR uses an internal voltage divider to set this precise point, making it suitable for 2.5 V rail supervision where margin below nominal is critical.
Does the TPS3836J25DBVR require an external pull-up resistor on the RESET pin?
No, the TPS3836J25DBVR does not require an external pull-up resistor because it features an active-low push-pull RESET output. Unlike open-drain variants (e.g., TPS3838), the TPS3836J25DBVR actively drives both high and low states, enabling direct connection to microcontroller reset inputs such as those on MSP430 devices without additional components.
How is the reset delay time configured on the TPS3836J25DBVR?
The reset delay time on the TPS3836J25DBVR is configured via the CT pin: connect CT to GND for a typical 10 ms delay, or to VDD for a typical 200 ms delay. These delays are internally generated and factory-calibrated-no external capacitor is needed. The TPS3836J25DBVR's CT pin draws less than 25 nA, ensuring negligible impact on system current budget.
Can the TPS3836J25DBVR supervise a 1.8 V supply rail?
No-the TPS3836J25DBVR is specified for a 2.25 V threshold and is not intended for 1.8 V rail supervision. For 1.8 V systems, TI offers the TPS3836E18DBVR variant (1.71 V VIT). Using TPS3836J25DBVR on a 1.8 V rail would result in continuous RESET assertion, as VDD would remain below VIT; the TPS3836J25DBVR requires minimum 1.6 V to operate but monitors relative to its fixed 2.25 V threshold.
What is the maximum supply voltage rating for the TPS3836J25DBVR?
The TPS3836J25DBVR has an absolute maximum VDD rating of 7 V, as stated in Section 7.1 of the SLVS292F datasheet. Operation beyond this voltage risks permanent damage. The recommended operating range is 1.6 V to 6 V; for 3.6 V lithium-ion battery applications, this provides 2.4 V headroom against transient spikes, aligning with typical battery protection requirements.
TPS3836J25DBVR 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:
- 2.25V
- 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
TPS3836J25DBVR FAQ
1.How can I place an order for TPS3836J25DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3836J25DBVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of TPS3836J25DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3836J25DBVR is usually 5 days.
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5.How can I obtain technical support or documentation for TPS3836J25DBVR?
For technical support, including TPS3836J25DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3836J25DBVR requirements.
6.How does Aetrix verify that TPS3836J25DBVR is sourced from the original manufacturer or authorized distributors?
All TPS3836J25DBVR 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 TPS3836J25DBVR meets industry standards.
7.What is the process for return or replacement of TPS3836J25DBVR?
All TPS3836J25DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3836J25DBVR, 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 TPS3836J25DBVR part is unused and in its original packaging.
Return procedure for TPS3836J25DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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