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Texas Instruments TPS3801-01DCKRG4
- Part No.:
- TPS3801-01DCKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3801-01DCKRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
TPS3801-01DCKRG4 from Texas Instruments is an ultra-small, precision supply voltage supervisor IC designed for power-on reset and timing supervision in processor-based systems. It features an adjustable threshold (VREF = 1.14 V), fixed 200 ms reset delay, push-pull RESET output, and operates from 1.6 V to 6 V supply. It is used in DSP/microcontroller power sequencing where accurate brownout detection and reliable reset assertion are critical.
For engineers reviewing the TPS3801-01DCKRG4 datasheet, TPS3801-01DCKRG4 pinout, TPS3801-01DCKRG4 application, or TPS3801-01DCKRG4 equivalent, this page delivers verified technical context, SC-70 package layout, key electrical specs including ±2.5% threshold accuracy and 9 µA typical supply current, and real-world use cases in portable and industrial embedded systems.
Technical Context
The TPS3801-01DCKRG4 uses an internal 1.14 V precision reference to monitor either VDD or an external SENSE node via a comparator with 2.5% total threshold accuracy over –40°C to +85°C. Its reset logic asserts a push-pull RESET signal when input falls below threshold and holds it active for exactly 200 ms after recovery - factory-programmed, no external components required.
This variant lacks a manual reset (MR) input, distinguishing it from other TPS380x family members. The device integrates low-power oscillator and timer circuitry, enabling stable operation down to 1.6 V while consuming only 9–12 µA typical supply current across its operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Delay Time | 200 ms fixed - ensures sufficient hold time for processor core initialization without external RC network. |
| Threshold Reference | 1.14 V (adjustable via external resistor divider on SENSE) - enables custom voltage monitoring from ~1.2 V to 6 V. |
| Threshold Accuracy | ±2.5% over temperature - guarantees reliable brownout detection across industrial ambient conditions. |
| Supply Current | 9 µA typical at 4 V - supports ultra-low-power battery-backed applications and always-on monitoring. |
| Output Type | Push-pull RESET - eliminates need for external pull-up resistor and reduces board space vs. open-drain alternatives. |
| Operating Voltage Range | 1.6 V to 6 V - compatible with 1.8 V, 2.5 V, 3.3 V, and 5 V system rails without level-shifting. |
| Package | SC-70 (DCK), 5-pin - footprint is ~50% smaller than SOT-23-5, ideal for space-constrained portable designs. |
Pinout & Package
TPS3801-01DCKRG4 is housed in a 5-pin SC-70 (DCK) package measuring 2.15 mm × 1.40 mm × 1.10 mm max height, with pin 1 located in quadrant Q3 per tape-and-reel orientation standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output - drives directly into microcontroller /DSP reset input without external pull-up. |
| 2 | GND | Analog ground reference - must be connected to clean system ground plane to maintain threshold stability. |
| 3 | SENSE | Adjustable threshold input - connects to resistor divider from monitored rail; sets trip point using internal 1.14 V reference. |
| 4 | VDD | Power supply input - powers internal circuitry and defines upper limit of SENSE monitoring range (≤ VDD). |
| 5 | GND | Second ground terminal - improves noise immunity and thermal performance; both GND pins must be tied to same ground net. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable voltage monitoring | Uses internal 1.14 V reference with external resistor divider on SENSE pin to monitor any rail from ~1.2 V to 6 V. |
| No external timing components | Factory-programmed 200 ms reset delay eliminates RC network, reducing BOM count and layout sensitivity. |
| Ultra-low quiescent current | 9 µA typical supply current enables integration into always-on subsystems without compromising battery life. |
| High-accuracy threshold | ±2.5% total threshold error over –40°C to +85°C ensures robust operation in industrial and automotive environments. |
| Small-footprint SC-70 package | 2.15 mm × 1.40 mm footprint saves >50% board area vs. SOT-23-5, critical for wearables and compact IoT nodes. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered wireless sensor node with ARM Cortex-M4 MCU and BLE radio requiring reliable power-up sequencing and brownout protection. IC Role / Device Role / Timing Role: Monitors main 3.3 V LDO output via SENSE pin; asserts RESET until voltage stabilizes above 3.2 V and holds for 200 ms. Use Value: Prevents firmware lockup during Li-ion battery sag; eliminates need for discrete reset IC + RC network, saving 2.5 mm² PCB area. |
Use Scenario: Handheld ECG device powered by single-cell LiPo, operating across 3.0–4.2 V range with strict FDA-compliant boot integrity requirements. IC Role / Device Role / Timing Role: Configured to monitor 1.8 V analog front-end rail using 1.14 V reference and precision resistors; triggers hard reset on undervoltage. Use Value: Ensures ADC and op-amp biasing circuits initialize correctly before sampling; ±2.5% threshold accuracy meets IEC 62304 Class B safety margin. |
| Smart Home Hub Controller | Automotive Body Control Module (BCM) |
|
Use Scenario: Multi-rail SoC-based hub with 1.1 V core, 1.8 V I/O, and 3.3 V peripheral supplies needing coordinated reset release. IC Role / Device Role / Timing Role: Supervises 3.3 V auxiliary rail feeding USB PHY and Ethernet MAC; provides clean, glitch-free RESET pulse to SoC's POR pin. Use Value: Push-pull output avoids weak pull-up limitations; 200 ms delay matches SoC's minimum reset assertion time, eliminating boot failures. |
Use Scenario: 12 V automotive system with local 5 V/3.3 V regulators powering CAN transceivers and microcontrollers in door module. IC Role / Device Role / Timing Role: Monitors 5 V regulator output via SENSE; asserts RESET during cold-crank (drop to 4.5 V) and holds until stable for 200 ms post-recovery. Use Value: Withstands load-dump and cold-crank transients per ISO 7637-2; operates reliably from 1.6 V, supporting start-stop functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3801E18DCKR | Fixed 1.71 V threshold; identical 200 ms delay and SC-70 package. | Used where fixed 1.8 V rail monitoring is required instead of adjustable SENSE configuration. | Select when system has dedicated 1.8 V supply and design simplicity outweighs flexibility. |
| MAX6326UT29D3+ | Fixed 2.93 V threshold; 200 ms delay; SOT-23-5 package; higher 12 µA supply current. | Targeted at 3.3 V systems with less stringent size constraints; lacks adjustable threshold capability. | Choose if existing layout uses SOT-23-5 and 2.93 V monitoring suffices; not drop-in due to different footprint. |
Compared with TPS3801E18DCKR and MAX6326UT29D3+, the TPS3801-01DCKRG4 uniquely supports adjustable threshold monitoring while maintaining the smallest SC-70 footprint and lowest quiescent current - making it optimal for multi-rail, space-constrained, and battery-sensitive designs.
Availability
TPS3801-01DCKRG4 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart home hubs, automotive body control modules, and battery-powered IoT edge devices requiring stable component supply and long-term lifecycle support.
Supply support for TPS3801-01DCKRG4 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability industrial and automotive ICs.
The TPS380x family was engineered specifically for ultra-low-power, precision voltage supervision in DSP, microcontroller, and microprocessor systems - prioritizing small size, tight threshold accuracy, and guaranteed reset timing without external components.
FAQ
What is the reset threshold voltage of the TPS3801-01DCKRG4?
The TPS3801-01DCKRG4 does not have a fixed threshold; it uses an internal 1.14 V reference applied to the SENSE pin. The actual trip voltage is set by an external resistor divider connected between the monitored rail and ground, allowing flexible adjustment across 1.2 V to 6 V. This differs from fixed-threshold variants like TPS3801E18DCKR (1.71 V).
Does the TPS3801-01DCKRG4 include a manual reset (MR) input?
No, the TPS3801-01DCKRG4 omits the MR pin found on most other TPS380x devices. Its pinout consists solely of RESET, GND, SENSE, VDD, and second GND - making it suitable for applications where only power-supply monitoring is required and external reset triggering is unnecessary.
What is the recommended bypass capacitor for the TPS3801-01DCKRG4?
A 0.1 µF ceramic capacitor is recommended between VDD and GND, placed as close as possible to the device pins. This minimizes noise coupling and ensures stable operation of the internal reference and comparator, especially during fast supply transients or high-frequency switching noise events near the IC.
Can the TPS3801-01DCKRG4 monitor a 5 V supply?
Yes - the TPS3801-01DCKRG4 supports VDD up to 6 V and allows SENSE input up to VDD. To monitor a 5 V rail, connect it to SENSE through a resistor divider that scales it down to 1.14 V (e.g., 100 kΩ top, 33.2 kΩ bottom). The device's input current is only ±25 nA, ensuring minimal loading error.
Is the TPS3801-01DCKRG4 RoHS compliant and lead-free?
Yes, the TPS3801-01DCKRG4 is RoHS compliant with NIPDAU (nickel/palladium/gold) lead finish and meets JEDEC Level-1 moisture sensitivity standards. It is rated for reflow up to 260°C and qualified for industrial temperature range (–40°C to +85°C), with full traceability and production status confirmed in TI's Package Option Addendum.
TPS3801-01DCKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 120ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TPS3801-01DCKRG4 FAQ
1.How can I place an order for TPS3801-01DCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3801-01DCKRG4 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 TPS3801-01DCKRG4 reliable?
The price and inventory of TPS3801-01DCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3801-01DCKRG4 is usually 5 days.
3.What payment methods are accepted for TPS3801-01DCKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3801-01DCKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3801-01DCKRG4?
TPS3801-01DCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3801-01DCKRG4 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 TPS3801-01DCKRG4?
For technical support, including TPS3801-01DCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3801-01DCKRG4 requirements.
6.How does Aetrix verify that TPS3801-01DCKRG4 is sourced from the original manufacturer or authorized distributors?
All TPS3801-01DCKRG4 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 TPS3801-01DCKRG4 meets industry standards.
7.What is the process for return or replacement of TPS3801-01DCKRG4?
All TPS3801-01DCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3801-01DCKRG4, 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 TPS3801-01DCKRG4 part is unused and in its original packaging.
Return procedure for TPS3801-01DCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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