My Inquiry
My Account
Texas Instruments TPS3838K33QDBVRQ1
- Part No.:
- TPS3838K33QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS3838K33QDBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,347
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3838K33QDBVRQ1 from Texas Instruments is an automotive-grade nanosupervisory circuit with 2.93 V fixed reset threshold, open-drain active-low RESET output, 220 nA typical supply current, and selectable 10 ms / 200 ms power-on reset delay via CT pin. It monitors 3.3 V rail integrity in battery-powered automotive microcontrollers and low-power DSPs.
For engineers reviewing the TPS3838K33QDBVRQ1 datasheet, TPS3838K33QDBVRQ1 pinout, TPS3838K33QDBVRQ1 application, or TPS3838K33QDBVRQ1 equivalent, key selection factors include its AEC-Q100 qualification, −40°C to 125°C operation, SOT-23 (DBV) 5-pin package, manual reset capability, and precise 2.93 V threshold with 40 mV hysteresis.
Technical Context
The TPS3838K33QDBVRQ1 implements a precision bandgap-based voltage reference and internal timer to generate a reliable power-on reset pulse after VDD exceeds 2.93 V. Its open-drain RESET output supports wired-OR configurations and external pull-up flexibility.
Delay timing is controlled by the CT pin: grounded for 10 ms typical delay, tied to VDD for 200 ms typical delay. Manual reset (MR) overrides supervision and forces RESET low when asserted, with internal 30 kΩ pullup when unused.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.93 V (typical), ±1.5% over temperature - ensures accurate 3.3 V rail monitoring with 40 mV hysteresis |
| Supply Current | 220 nA (typical at VDD > 3 V) - enables multi-year battery life in always-on automotive sensors |
| Reset Delay Options | 10 ms (CT = GND) or 200 ms (CT = VDD) - configurable timing without external components |
| Output Type | Active-low open-drain RESET - allows level translation and shared reset bus with multiple devices |
| Operating Temperature | −40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive applications |
| ESD Protection | 2000 V HBM, 200 V MM - robust handling in automotive manufacturing and service environments |
| Manual Reset Input | Logic-compatible MR pin with 30 kΩ internal pullup - simplifies system-level reset coordination |
Pinout & Package
TPS3838K33QDBVRQ1 uses a 5-pin SOT-23 (DBV) package, 2.9 mm × 1.6 mm × 1.45 mm, RoHS-compliant, tape-and-reel (3000 pcs/reel), MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CT | Delay configuration input | Ground for 10 ms reset delay; connect to VDD for 200 ms delay - no external capacitor required |
| 2 - GND | Power ground reference | Return path for internal reference and output stage; must be low-impedance for stable threshold accuracy |
| 3 - MR | Manual reset input | Active-low asynchronous reset trigger; internally pulled up to VDD (30 kΩ) when unused |
| 4 - VDD | Supply input | Monitored 3.3 V rail input (1.6–6 V operating range); powers internal circuitry and reference |
| 5 - RESET | Open-drain reset output | Active-low signal; requires external pull-up for logic-level compatibility and bus sharing |
Key Features
| Feature | Design Value |
|---|---|
| Nanosupply current | 220 nA typical - extends battery runtime in always-on telematics and ADAS modules |
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to 125°C) - certified for engine control, body electronics, and infotainment systems |
| Fixed precision threshold | 2.93 V ±1.5% - matches 3.3 V LDO tolerance and avoids false resets during brownout recovery |
| Configurable reset delay | 10 ms / 200 ms via single CT pin - eliminates need for external RC timing networks |
| Open-drain RESET output | Supports wired-OR reset busing and mixed-voltage system integration - compatible with 1.8 V to 5 V pull-ups |
Applications
| Engine Control Unit (ECU) | Automotive Telematics Module |
|---|---|
Use Scenario: Monitors 3.3 V supply to MCU and CAN transceiver during cold cranking and load dump events. IC Role / Device Role / Timing Role: Nanopower supervisory circuit providing power-on reset and brownout detection with 10 ms delay. Use Value: Prevents MCU lockup during transient voltage dips below 2.93 V; open-drain output interfaces directly with CAN controller reset pin. |
Use Scenario: Ensures clean boot of GPS/GNSS and cellular modem processors after vehicle ignition or battery disconnect. IC Role / Device Role / Timing Role: System supervisor generating 200 ms reset pulse (CT = VDD) to accommodate slow-start PMICs. Use Value: Guarantees full initialization of multi-rail power sequencing before firmware execution begins. |
| ADAS Camera Sensor Node | Electric Power Steering (EPS) Controller |
Use Scenario: Supervises 3.3 V imaging sensor and ISP supply in compact rear-view camera modules. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor with manual reset for field firmware update recovery. Use Value: 220 nA supply current minimizes thermal impact in sealed enclosures; MR pin enables safe bootloader entry. |
Use Scenario: Provides fail-safe reset to motor control MCU during high-noise steering actuation cycles. IC Role / Device Role / Timing Role: Automotive-grade supervisor with ESD-hardened pins and 125°C operation. Use Value: Withstands ESD events >2000 V HBM near high-current motor drivers; hysteresis prevents chatter during rail recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3838K33DBVR | Non-automotive version; same electrical specs but not AEC-Q100 qualified | Lacks automotive qualification and extended temperature screening | Select only for industrial or consumer designs where −40°C to 125°C operation is not required |
| MAX6373K33+T | 2.93 V threshold, 1.6 µA supply current, push-pull RESET, 140 ms fixed delay | Higher quiescent current limits battery lifetime; push-pull output lacks bus-sharing capability | Choose when board space permits larger SOT-23-6 package and open-drain functionality is unnecessary |
Compared with TPS3838K33QDBVRQ1, the TPS3838K33DBVR omits automotive qualification and reliability testing, while the MAX6373K33+T trades nanosupply efficiency and open-drain flexibility for higher drive strength and fixed timing - making TPS3838K33QDBVRQ1 optimal for AEC-Q100-compliant, battery-sensitive automotive systems.
Availability
TPS3838K33QDBVRQ1 is available at Aetrix Electronics and suitable for automotive ECUs, telematics modules, and ADAS sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS3838K33QDBVRQ1 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 with deep automotive design expertise and AEC-Q100 process validation.
The TPS3838-Q1 family was engineered specifically for automotive power-supply supervision - combining nanopower operation, precise voltage thresholds, and robust packaging to meet stringent functional safety and reliability requirements in modern vehicles.
FAQ
What is the exact reset threshold voltage of the TPS3838K33QDBVRQ1?
The TPS3838K33QDBVRQ1 has a nominal reset threshold voltage of 2.93 V, with a guaranteed range of 2.82 V to 3.10 V over temperature and process variation. This value is factory-trimmed and specified in the Electrical Characteristics table of the SGLS141A datasheet, ensuring accurate supervision of 3.3 V rails in automotive applications.
Does the TPS3838K33QDBVRQ1 support manual reset functionality?
Yes, the TPS3838K33QDBVRQ1 includes a dedicated MR (manual reset) pin that provides asynchronous active-low reset assertion. When pulled low, it forces the open-drain RESET output low regardless of VDD level. An internal 30 kΩ pullup resistor connects MR to VDD, allowing direct connection to VDD if manual reset is unused.
How is the reset delay time configured on the TPS3838K33QDBVRQ1?
The reset delay time on the TPS3838K33QDBVRQ1 is selected using the CT pin: connecting CT to GND yields a typical 10 ms delay, while connecting CT to VDD yields a typical 200 ms delay. No external capacitor is required - the timing is generated by an internal RC network calibrated for each configuration.
What package type and dimensions does the TPS3838K33QDBVRQ1 use?
The TPS3838K33QDBVRQ1 uses a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 1.6 mm × 1.45 mm maximum height. It is supplied in tape-and-reel format (3000 units per reel), RoHS-compliant, with MSL Level-1 rating and Sn lead finish, per TI's DBV0005A package outline.
Is the TPS3838K33QDBVRQ1 qualified for automotive applications?
Yes, the TPS3838K33QDBVRQ1 is AEC-Q100 Grade 1 qualified for automotive use, with guaranteed operation from −40°C to 125°C ambient temperature. It undergoes rigorous stress testing including HTOL, temperature cycling, and ESD (2000 V HBM), and carries the Q1 suffix to denote automotive qualification.
TPS3838K33QDBVRQ1 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:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 10ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS3838K33QDBVRQ1 FAQ
1.How can I place an order for TPS3838K33QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3838K33QDBVRQ1 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 TPS3838K33QDBVRQ1 reliable?
The price and inventory of TPS3838K33QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3838K33QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS3838K33QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3838K33QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3838K33QDBVRQ1?
TPS3838K33QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3838K33QDBVRQ1 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 TPS3838K33QDBVRQ1?
For technical support, including TPS3838K33QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3838K33QDBVRQ1 requirements.
6.How does Aetrix verify that TPS3838K33QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3838K33QDBVRQ1 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 TPS3838K33QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3838K33QDBVRQ1?
All TPS3838K33QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3838K33QDBVRQ1, 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 TPS3838K33QDBVRQ1 part is unused and in its original packaging.
Return procedure for TPS3838K33QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3838K33QDBVRQ1 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…
