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Texas Instruments 2U3836E18QDBVRG4Q1
- Part No.:
- 2U3836E18QDBVRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
2U3836E18QDBVRG4Q1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
2U3836E18QDBVRG4Q1 from Texas Instruments is an automotive-grade nanosupply voltage supervisor IC with 1.71 V fixed reset threshold, active-low push-pull RESET output, 220 nA typical supply current, 10 ms/200 ms selectable power-on reset delay, and operation from −40°C to 125°C. It monitors 1.8 V rails in battery-powered automotive microcontrollers and low-power DSPs.
For engineers reviewing the 2U3836E18QDBVRG4Q1 datasheet, 2U3836E18QDBVRG4Q1 pinout, 2U3836E18QDBVRG4Q1 application, or 2U3836E18QDBVRG4Q1 equivalent, key selection criteria include its AEC-Q100 qualification, SOT-23-5 package, manual reset capability, CT-pin programmable delay, and precision ±1.5% threshold tolerance over temperature.
Technical Context
The 2U3836E18QDBVRG4Q1 implements a bandgap-referenced voltage comparator with internal hysteresis (40 mV) and a refresh timer that initiates reset assertion when VDD rises above 1.1 V and holds RESET active until VDD exceeds 1.71 V. Its CT pin selects between 10 ms (CT = GND) or 200 ms (CT = VDD) delay times after threshold crossing.
It features a dedicated manual reset (MR) input with internal 30 kΩ pullup, supports VDD from 1.6 V to 6 V, and asserts RESET low during undervoltage, brownout, or MR activation. The push-pull output drives up to 5 mA sink and −5 mA source while maintaining VOL ≤ 0.4 V at IOL = 2 mA and VOH ≥ 0.8 × VDD at IOH = −2 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 1.71 V ±1.5% - precisely supervises 1.8 V supply rails with minimal margin loss |
| Supply Current | 220 nA typical - enables multi-year operation in coin-cell–powered automotive sensors |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - configurable timing for processor boot sequencing |
| Operating Temperature | −40°C to 125°C - qualified for under-hood automotive environments |
| Output Type | Active-low push-pull - eliminates external pullup resistor and ensures fast, deterministic release |
| ESD Rating | 2000 V HBM, 200 V MM - robust against assembly and in-system electrostatic discharge |
| AEC-Q100 Grade | Grade 1 - certified for automotive powertrain and body electronics applications |
Pinout & Package
2U3836E18QDBVRG4Q1 is housed in a RoHS-compliant, green (no Sb/Br), 5-pin SOT-23 (DBV) package with 1.4 mm pitch, 3.0 mm × 1.7 mm footprint, and 1.3 mm height - suitable for high-density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CT | Delay Configuration Input | Connect to GND for 10 ms reset delay; connect to VDD for 200 ms delay - no external components required |
| 2 - GND | Ground Reference | Primary return path for internal comparator and output driver; must be low-impedance for noise immunity |
| 3 - MR | Manual Reset Input | Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ); requires <0.3×VDD to assert |
| 4 - VDD | Supply Input | Power rail input (1.6–6 V); bypass capacitor (0.1 µF ceramic) required near pin for stable threshold operation |
| 5 - RESET | Reset Output | Active-low push-pull output; sinks 5 mA / sources −5 mA; drives microcontroller /DSP reset pin directly |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower consumption | 220 nA typical supply current enables >10-year battery life in always-on vehicle modules |
| Automotive qualification | AEC-Q100 Grade 1 certification ensures reliability in harsh automotive thermal and vibration environments |
| Configurable reset timing | Single CT pin selects between 10 ms and 200 ms delay - simplifies BOM and layout vs fixed-delay alternatives |
| Precision threshold stability | ±1.5% initial accuracy and <0.01%/°C drift maintain reset integrity across full −40°C to 125°C range |
| Integrated manual reset | Dedicated MR pin with internal 30 kΩ pullup reduces external component count and PCB area |
Applications
| Engine Control Unit (ECU) Power Monitoring | ADAS Camera Module Supervision |
|---|---|
Use Scenario: Monitors 1.8 V core supply of automotive MCU during cold cranking and load dump events. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to hold MCU in reset until stable 1.8 V rail is established. Use Value: Prevents spurious MCU execution during unstable power-up; 10 ms delay ensures complete oscillator stabilization before release. | Use Scenario: Ensures clean boot of image signal processor in rear-view camera under stop-start battery voltage sag. IC Role / Device Role / Timing Role: Nanopower supervisor with 200 ms delay (CT = VDD) providing extended reset hold during slow battery recovery. Use Value: Eliminates boot failures caused by transient dips below 1.71 V; 220 nA quiescent current preserves battery charge between ignition cycles. |
| Telematics Control Unit (TCU) Backup Power Path | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Supervises supercapacitor-backed 1.8 V rail powering real-time clock and CAN transceiver during main battery disconnect. IC Role / Device Role / Timing Role: Undervoltage detector triggering RESET when backup rail drops below 1.71 V, initiating graceful shutdown. Use Value: Guarantees data integrity during power loss; 40 mV hysteresis prevents chatter during slow discharge near threshold. | Use Scenario: Validates 1.8 V supply to Hall-effect position sensor ASIC in EPS motor control module. IC Role / Device Role / Timing Role: High-immunity supervisor with 2000 V HBM ESD protection guarding against harness-induced transients. Use Value: Maintains functional safety compliance (ISO 26262 ASIL-B) by preventing sensor misreads due to supply droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836E18QDBVRQ1 | Same silicon, identical electrical specs, same DBV package; differs only in reel packaging (3000 vs 3000) and marking (PDNQ) | No functional difference; both qualified for automotive use and support identical operating conditions | Select 2U3836E18QDBVRG4Q1 for TI's latest green (RoHS & no Sb/Br) finish and MSL Level-1 handling |
| MAX6375XR22+T | 2.2 V threshold, 1.6 µA supply current, no CT-pin delay selection, SOT-23-5 package | Higher quiescent current limits battery lifetime; fixed 200 ms delay lacks flexibility for diverse MCU boot requirements | Choose only if 2.2 V threshold matches system rail; otherwise 2U3836E18QDBVRG4Q1 offers lower power and programmable timing |
Compared with TPS3836E18QDBVRQ1, 2U3836E18QDBVRG4Q1 provides identical supervision functionality with enhanced environmental compliance (green finish), while MAX6375XR22+T trades nanosupply efficiency for higher threshold and inflexible timing - making 2U3836E18QDBVRG4Q1 optimal for 1.8 V automotive systems requiring long battery life and configurable reset behavior.
Availability
2U3836E18QDBVRG4Q1 is available at Aetrix Electronics and suitable for automotive ECUs, ADAS camera modules, and telematics control units requiring stable component supply with AEC-Q100 qualification and long-term lifecycle support.
Supply support for 2U3836E18QDBVRG4Q1 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, embedded processing, and connectivity solutions for automotive, industrial, and consumer markets.
The TPS3836-Q1 family was designed specifically for automotive power-rail supervision, emphasizing nanopower operation, wide temperature range, and AEC-Q100 compliance to ensure reliable microcontroller and DSP initialization in safety-critical systems.
FAQ
What is the exact reset threshold voltage of the 2U3836E18QDBVRG4Q1?
The 2U3836E18QDBVRG4Q1 has a nominal reset threshold voltage of 1.71 V with ±1.5% initial accuracy over temperature. This value is factory-trimmed and specified in the Electrical Characteristics table of the SGLS141A datasheet. The device asserts RESET low whenever VDD falls below this threshold and releases it only after VDD rises above 1.71 V plus 40 mV hysteresis.
Does the 2U3836E18QDBVRG4Q1 support manual reset functionality?
Yes, the 2U3836E18QDBVRG4Q1 includes a dedicated manual reset (MR) input on Pin 3. It is active-low and internally pulled up to VDD with a 30 kΩ resistor. Driving MR below 0.3 × VDD forces RESET low regardless of VDD level, enabling system-level reset initiation. If unused, MR should be tied to VDD to minimize leakage current.
How is the reset delay time configured on the 2U3836E18QDBVRG4Q1?
The reset delay time of the 2U3836E18QDBVRG4Q1 is selected via the CT pin (Pin 1): connecting CT to GND configures a typical 10 ms delay, while connecting CT to VDD configures a typical 200 ms delay. No external capacitor or resistor is needed - the timing is generated by an internal RC network calibrated for automotive temperature range.
Is the 2U3836E18QDBVRG4Q1 qualified for automotive applications?
Yes, the 2U3836E18QDBVRG4Q1 is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and explicitly designated for automotive use in the TI documentation. Its qualification includes stress testing for temperature cycling, humidity bias, and mechanical shock - confirming suitability for engine control, body electronics, and ADAS subsystems.
What package type and dimensions does the 2U3836E18QDBVRG4Q1 use?
The 2U3836E18QDBVRG4Q1 uses a 5-pin SOT-23 (DBV) package measuring 3.0 mm × 1.7 mm × 1.3 mm with 1.4 mm pin pitch. It is RoHS-compliant and features green (Pb-free, no Sb/Br) finish with CU NIPDAU lead finish and JEDEC Level-1 moisture sensitivity rating - compatible with standard reflow soldering processes.
2U3836E18QDBVRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
2U3836E18QDBVRG4Q1 FAQ
1.How can I place an order for 2U3836E18QDBVRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2U3836E18QDBVRG4Q1 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 2U3836E18QDBVRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2U3836E18QDBVRG4Q1 is usually 5 days.
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5.How can I obtain technical support or documentation for 2U3836E18QDBVRG4Q1?
For technical support, including 2U3836E18QDBVRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2U3836E18QDBVRG4Q1 requirements.
6.How does Aetrix verify that 2U3836E18QDBVRG4Q1 is sourced from the original manufacturer or authorized distributors?
All 2U3836E18QDBVRG4Q1 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 2U3836E18QDBVRG4Q1 meets industry standards.
7.What is the process for return or replacement of 2U3836E18QDBVRG4Q1?
All 2U3836E18QDBVRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with 2U3836E18QDBVRG4Q1, 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 2U3836E18QDBVRG4Q1 part is unused and in its original packaging.
Return procedure for 2U3836E18QDBVRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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