My Inquiry
My Account
Texas Instruments 2U3836K33QDBVRG4Q1
- Part No.:
- 2U3836K33QDBVRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
2U3836K33QDBVRG4Q1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,524
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
2U3836K33QDBVRG4Q1 from Texas Instruments is an automotive-grade nanosupervisory circuit with 2.93 V fixed reset threshold, 220 nA typical supply current, push-pull active-low RESET output, and selectable 10 ms / 200 ms power-on delay via CT pin. It monitors 3.3 V supply rails in battery-powered automotive microcontrollers and low-power DSP systems.
For engineers reviewing the 2U3836K33QDBVRG4Q1 datasheet, 2U3836K33QDBVRG4Q1 pinout, 2U3836K33QDBVRG4Q1 application, or 2U3836K33QDBVRG4Q1 equivalent, this page delivers verified technical context, exact pin functions, automotive temperature range (−40°C to 125°C), SOT-23 package details, and validated alternative parts for system-level reset design.
Technical Context
The 2U3836K33QDBVRG4Q1 implements a precision band-gap reference-based voltage monitor with 40 mV hysteresis at its 2.93 V threshold, ensuring stable reset assertion during supply transients. Its internal timer initiates after VDD exceeds VIT and supports two delay modes: CT = GND yields 10 ms typ, CT = VDD yields 200 ms typ.
It features manual reset (MR) with −200 µA low-level input current and internal 30 kΩ pull-up, enabling external debounced button control. The push-pull RESET output drives up to 5 mA sink current with 0.4 V max VOL at 2 mA, suitable for direct interfacing with MCU reset inputs without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V ±0.11 V - precisely matches 3.3 V rail supervision with margin for brownout detection |
| Supply Current | 220 nA typ at VDD > VIT - enables multi-year operation in coin-cell–powered automotive sensors |
| Power-On Delay | Selectable 10 ms / 200 ms - configurable via CT pin to match processor initialization timing |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor on MCU reset line |
| Operating Temp | −40°C to 125°C - qualified for under-hood automotive environments per AEC-Q100 |
| Hysteresis | 40 mV - prevents oscillation during slow-rising or noisy supply conditions |
| ESD Rating | 2000 V HBM, 200 V MM - robust against assembly and field handling stress |
Pinout & Package
5-pin SOT-23 (DBV) package: 2.92 mm × 1.6 mm × 1.15 mm body, gull-wing leads, RoHS-compliant green finish (no Sb/Br), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CT | Delay Configuration | 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 reference and output stage; must be low-impedance for accurate threshold |
| 3 - MR | Manual Reset Input | Active-low asynchronous reset; internally pulled up to VDD (30 kΩ); accepts standard push-button interface |
| 4 - VDD | Supply Input | Operates from 1.6 V to 6 V; asserts reset when VDD < 2.93 V; functional down to 1.1 V for power-up detection |
| 5 - RESET | Reset Output | Push-pull active-low output; sinks 5 mA max; VOL ≤ 0.4 V at 2 mA - directly drives most MCU reset pins |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower Operation | 220 nA supply current enables integration into always-on automotive modules without compromising battery life |
| Automotive Qualification | AEC-Q100 Grade 1 qualified with −40°C to 125°C operation and customer-specific configuration control |
| Configurable Reset Timing | Single-pin CT selection between 10 ms and 200 ms delay eliminates need for external RC timing networks |
| Robust Manual Reset | MR pin supports direct push-button connection with internal 30 kΩ pull-up - no external BOM components needed |
| Precision Threshold Stability | ±1.5% threshold accuracy over temperature ensures reliable reset across full automotive operating range |
Applications
| Engine Control Unit (ECU) Power Monitoring | Telematics Control Unit (TCU) Brownout Protection |
|---|---|
Use Scenario: Monitors 3.3 V domain powering CAN controller and flash memory in engine management systems. IC Role / Device Role / Timing Role: Provides power-on reset and undervoltage lockout with 10 ms delay to synchronize MCU boot sequence. Use Value: Prevents corrupted firmware execution during cold cranking by asserting reset until supply stabilizes above 2.93 V. | Use Scenario: Supervises 3.3 V supply in cellular-connected vehicle tracking units powered by backup supercapacitors. IC Role / Device Role / Timing Role: Delivers 200 ms reset hold time during brief supply dips caused by RF transmission bursts. Use Value: Maintains system integrity during transient load events without requiring software intervention or watchdog timeout extension. |
| ADAS Camera Module Startup | Automotive Infotainment SoC Initialization |
Use Scenario: Ensures clean startup of image signal processor (ISP) and MIPI interface in rear-view camera modules. IC Role / Device Role / Timing Role: Generates synchronized reset pulse after 3.3 V rail reaches regulation, using CT = GND for fast 10 ms delay. Use Value: Eliminates video artifacts and sensor initialization failures by guaranteeing ISP reset occurs only after stable power. | Use Scenario: Controls reset sequencing for dual-core application processor and audio codec in head unit designs. IC Role / Device Role / Timing Role: Acts as primary supervisor for 3.3 V I/O rail, with MR pin tied to service mode switch for factory diagnostics. Use Value: Enables field-serviceable recovery via hardware reset without requiring JTAG or bootloader access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3836K33QDBVRQ1 | Same silicon, identical electrical specs, same DBV package; differs only in reel packaging (3000 vs 3000) and marking (PDTQ) | No functional difference; both qualified for automotive use and share identical lifecycle status (LIFEBUY) | Select 2U3836K33QDBVRG4Q1 for TI's green (RoHS & no Sb/Br) finish and guaranteed tape-and-reel compliance per TI spec G4Q1 |
| TPS3838K33QDBVRQ1 | Same threshold (2.93 V) and package but open-drain RESET output; requires external pull-up resistor | Suitable where reset polarity flexibility or wired-OR reset bus architecture is required | Choose TPS3838K33QDBVRQ1 only if system design mandates open-drain topology; otherwise 2U3836K33QDBVRG4Q1 offers simpler push-pull integration |
Compared with TPS3836K33QDBVRQ1, 2U3836K33QDBVRG4Q1 provides identical supervision functionality with enhanced environmental compliance (Green finish), while TPS3838K33QDBVRQ1 trades push-pull simplicity for open-drain configurability-requiring additional BOM and layout effort.
Availability
2U3836K33QDBVRG4Q1 is available at Aetrix Electronics and suitable for automotive ECU power monitoring, telematics brownout protection, and ADAS camera module startup requiring stable component supply across extended temperature ranges.
Supply support for 2U3836K33QDBVRG4Q1 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 90 years of innovation in power management, signal chain, and automotive electronics.
The TPS3836-Q1 family is designed specifically for automotive power-supply supervision, targeting low-power DSPs, microcontrollers, and safety-critical ECUs needing precise, nanopower reset generation.
FAQ
What is the exact reset threshold voltage of the 2U3836K33QDBVRG4Q1?
The 2U3836K33QDBVRG4Q1 has a nominal reset threshold voltage of 2.93 V, with a guaranteed range of 2.82 V to 3.10 V across temperature and process variation. This value is factory-trimmed and specified in the electrical characteristics table under parameter VIT for TPS383xK33 variants. It is optimized for supervision of 3.3 V supply rails in automotive applications.
Does the 2U3836K33QDBVRG4Q1 support manual reset functionality?
Yes, the 2U3836K33QDBVRG4Q1 supports manual reset via its MR pin (Pin 3). The MR input is active-low and features an internal 30 kΩ pull-up resistor to VDD, allowing direct connection to a momentary switch grounded to assert reset. The device responds within 0.1 µs (tPLH/tPHL) and consumes minimal current (−200 µA typ at 0 V MR).
What is the purpose of the CT pin on the 2U3836K33QDBVRG4Q1?
The CT pin (Pin 1) on the 2U3836K33QDBVRG4Q1 selects the power-on reset delay time: connecting CT to GND configures a 10 ms typical delay, while connecting CT to VDD selects a 200 ms typical delay. No external capacitor is needed - the timing is generated by an internal RC network, simplifying PCB layout and reducing BOM count.
Is the 2U3836K33QDBVRG4Q1 qualified for automotive applications?
Yes, the 2U3836K33QDBVRG4Q1 is AEC-Q100 Grade 1 qualified, rated for operation from −40°C to 125°C, and designated with the "-Q1" suffix per TI's automotive product definition. It includes customer-specific configuration control and meets automotive reliability and qualification requirements for use in engine control, infotainment, and ADAS systems.
What package type and dimensions does the 2U3836K33QDBVRG4Q1 use?
The 2U3836K33QDBVRG4Q1 uses the 5-pin SOT-23 (DBV) package: 2.92 mm × 1.6 mm × 1.15 mm body size, gull-wing lead form, 0.95 mm lead pitch, and RoHS-compliant green finish (no Sb/Br). Tape-and-reel packaging contains 3000 units per reel, with pin 1 located in quadrant Q3 per TI's tape specification.
2U3836K33QDBVRG4Q1 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:
- 2.93V
- 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
2U3836K33QDBVRG4Q1 FAQ
1.How can I place an order for 2U3836K33QDBVRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2U3836K33QDBVRG4Q1 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 2U3836K33QDBVRG4Q1 reliable?
The price and inventory of 2U3836K33QDBVRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2U3836K33QDBVRG4Q1 is usually 5 days.
3.What payment methods are accepted for 2U3836K33QDBVRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2U3836K33QDBVRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2U3836K33QDBVRG4Q1?
2U3836K33QDBVRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2U3836K33QDBVRG4Q1 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 2U3836K33QDBVRG4Q1?
For technical support, including 2U3836K33QDBVRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2U3836K33QDBVRG4Q1 requirements.
6.How does Aetrix verify that 2U3836K33QDBVRG4Q1 is sourced from the original manufacturer or authorized distributors?
All 2U3836K33QDBVRG4Q1 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 2U3836K33QDBVRG4Q1 meets industry standards.
7.What is the process for return or replacement of 2U3836K33QDBVRG4Q1?
All 2U3836K33QDBVRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with 2U3836K33QDBVRG4Q1, 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 2U3836K33QDBVRG4Q1 part is unused and in its original packaging.
Return procedure for 2U3836K33QDBVRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2U3836K33QDBVRG4Q1 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
