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Texas Instruments TPS3803G15MDCKREP
- Part No.:
- TPS3803G15MDCKREP
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3803G15MDCKREP.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
TPS3803G15MDCKREP from Texas Instruments is a radiation-hardened, extended-temperature voltage supervisor IC with fixed 1.40 V threshold, open-drain active-low RESET output, and 3 µA typical supply current at 3.3 V. It monitors VDD only (no SENSE input), operates from −55°C to +125°C, and is housed in a 5-pin SC-70 package. It is used for power-on reset supervision in space-grade DSPs and radiation-tolerant microcontrollers.
For engineers reviewing the TPS3803G15MDCKREP datasheet, TPS3803G15MDCKREP pinout, TPS3803G15MDCKREP application, or TPS3803G15MDCKREP equivalent, this page delivers verified electrical parameters, terminal functions, thermal performance limits, reset timing behavior, and qualified alternatives for high-reliability embedded systems requiring MIL-PRF-38535 Class V or ESA ESCC qualification.
Technical Context
The TPS3803G15MDCKREP implements a precision bandgap reference (1.215 V) feeding a comparator that asserts RESET when VDD falls below 1.40 V ±1.5% over temperature. Its internal hysteresis is 15 mV, ensuring noise immunity during brownout recovery.
This device lacks a SENSE pin-pin 5 is NC-and uses only VDD as the monitored rail. RESET remains asserted until VDD exceeds 1.40 V + 15 mV, then deasserts with 5–100 µs propagation delay. It supports supply voltages from 1.3 V to 6 V and draws ≤5 µA across its full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 1.40 V ±1.5% - precise fixed detection point for 1.5 V rail supervision |
| Supply Current | 3 µA typical at 3.3 V - enables ultra-low-power battery-backed operation |
| Operating Temperature | −55°C to +125°C - qualified for space, avionics, and harsh industrial environments |
| Reset Output Type | Open-drain - allows wired-OR configuration and flexible pull-up voltage selection |
| Hysteresis | 15 mV - prevents oscillation near threshold during slow-rising or noisy supplies |
| Propagation Delay | 5–100 µs - ensures deterministic reset timing under varying load and temperature |
| Absolute Max VDD | +7 V - provides margin against transient overvoltage events |
Pinout & Package
TPS3803G15MDCKREP is packaged in a 5-pin SC-70 (DCK) surface-mount package measuring 2.15 mm × 1.85 mm × 1.1 mm, with lead pitch of 0.65 mm and RoHS-compliant NiPdAu plating. The package is moisture-sensitive Level-1 (260°C peak reflow, unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or grounded per layout best practice |
| 2 (GND) | Ground reference | Primary return path for internal circuitry and RESET sink current |
| 3 (RESET) | Active-low open-drain output | Drives low to assert reset; requires external pull-up to system VDD or another rail |
| 4 (VDD) | Power supply and sense input | Monitored rail; also powers internal circuitry; valid from 1.3 V to 6 V |
| 5 (NC) | No internal connection | Not bonded; electrically isolated; no routing or thermal pad required |
Key Features
| Feature | Design Value |
|---|---|
| Controlled Baseline | Single assembly/test site and single fabrication site - ensures consistent parametric yield and traceability |
| Enhanced DMS Support | Diminishing Manufacturing Sources mitigation - long-term supply continuity for defense and aerospace programs |
| JEDEC-Qualified Reliability | HAST, temperature cycling, electromigration, and mold compound life testing - validated for 15+ year mission life |
| High Threshold Accuracy | ±1.5% over −55°C to +125°C - eliminates need for external calibration in critical reset applications |
| Low Supply Current | ≤5 µA max across full voltage/temperature range - extends battery life in unpowered standby modes |
Applications
| Avionics Power Sequencing | Satellite Onboard Computer Reset |
|---|---|
Use Scenario: Supervising 1.5 V core supply during cold-start of flight computer after orbital insertion. IC Role / Device Role / Timing Role: Fixed-threshold voltage supervisor asserting hardware reset until stable 1.5 V rail is established. Use Value: Guarantees deterministic boot sequence initiation only after VDD exceeds 1.40 V with 15 mV hysteresis, preventing premature CPU execution. |
Use Scenario: Enabling safe restart of FPGA-based payload controller following solar array deployment voltage sag. IC Role / Device Role / Timing Role: Open-drain RESET output tied to multiple downstream devices via shared pull-up, coordinating synchronized recovery. Use Value: 3 µA quiescent current minimizes parasitic drain on primary battery during multi-year eclipse periods. |
| Nuclear Instrumentation Control | Military Vehicle ECUs |
Use Scenario: Monitoring 1.5 V analog front-end supply in radiation-hardened neutron spectrometer. IC Role / Device Role / Timing Role: Single-point reset generator with guaranteed operation up to +125°C ambient and total ionizing dose tolerance. Use Value: ±1.5% threshold accuracy over full temperature range eliminates recalibration drift in field-deployed instruments. |
Use Scenario: Providing watchdog-independent power-good signal for engine control unit during cold cranking (low-battery condition). IC Role / Device Role / Timing Role: Standalone VDD monitor with fast 5 µs minimum propagation delay to trigger fail-safe shutdown logic. Use Value: Absolute maximum rating of +7 V withstands load-dump transients without latch-up or damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3803G15QDCKREP | Same 1.40 V threshold and SC-70 package, but rated for −40°C to +125°C (not −55°C) | Lacks extended low-temperature qualification; unsuitable for cryogenic launch environments | Select when full military-grade cold start is not required and cost optimization is prioritized |
| TPS3803-01MDCKREP | Adjustable threshold via external resistors (1.226 V base), same M-temp grade and package | Requires two external resistors and PCB area; adds design complexity and BOM count | Choose only if programmable threshold is mandatory and 1.40 V fixed point is insufficient |
Compared with TPS3803G15QDCKREP, the TPS3803G15MDCKREP provides guaranteed functionality at −55°C - critical for space launch and arctic deployment - while TPS3803-01MDCKREP trades threshold rigidity for configurability, increasing design validation effort and component count.
Availability
TPS3803G15MDCKREP is available at Aetrix Electronics and suitable for avionics power sequencing, satellite onboard computer reset, nuclear instrumentation control, and military vehicle ECUs requiring stable component supply across extended temperature and radiation environments.
Supply support for TPS3803G15MDCKREP 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 high-reliability components, with decades of heritage in space-qualified and military-grade ICs.
The TPS3803-EP product line delivers enhanced plastic packaged voltage supervisors engineered for mission-critical systems where extended temperature operation, radiation tolerance, and long-term supply assurance are non-negotiable.
FAQ
What is the exact threshold voltage tolerance of the TPS3803G15MDCKREP over temperature?
The TPS3803G15MDCKREP has a nominal threshold voltage of 1.40 V with ±1.5% accuracy over the full −55°C to +125°C operating range. This specification is guaranteed by TI's production test and includes effects of process variation, voltage coefficient, and temperature drift - no derating or external compensation is needed for compliant designs.
Does the TPS3803G15MDCKREP support dual-rail monitoring like the TPS3805 family?
No, the TPS3803G15MDCKREP monitors only the VDD supply rail. Pin 5 is marked NC (no connection), and the internal SENSE input is unimplemented. Dual-rail supervision requires the TPS3805H33MDCKREP or similar variant - the TPS3803G15MDCKREP is strictly a single-supply detector.
Can the RESET output of the TPS3803G15MDCKREP drive a 10 kΩ pull-up to 5 V?
Yes - the TPS3803G15MDCKREP's open-drain RESET output is rated for ±10 mA clamp current and can safely sink ≥5 mA at VOL ≤ 0.3 V. With a 10 kΩ pull-up to 5 V, the output will pull down to <0.3 V while sinking 0.5 mA, well within spec and compatible with 5 V logic interfaces.
Is the TPS3803G15MDCKREP pin-compatible with commercial-grade TPS3803G15 variants?
Yes - the TPS3803G15MDCKREP shares identical SC-70 (DCK) pinout, footprint, and terminal functions with TPS3803G15QDCKREP and catalog TPS3803G15. However, the M-suffix device requires stricter board handling due to enhanced plastic packaging and different moisture sensitivity labeling.
What is the minimum VDD required to guarantee RESET assertion during power-up?
The TPS3803G15MDCKREP asserts RESET when VDD rises above 0.8 V (power-up reset voltage, VIT ≤ 1.5 V). This ensures reliable reset generation even during very slow or weak power ramps - critical for systems powered by energy-harvesting sources or degraded batteries.
TPS3803G15MDCKREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 5µs Typical Propagation Delay
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TPS3803G15MDCKREP FAQ
1.How can I place an order for TPS3803G15MDCKREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3803G15MDCKREP 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 TPS3803G15MDCKREP reliable?
The price and inventory of TPS3803G15MDCKREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3803G15MDCKREP is usually 5 days.
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TPS3803G15MDCKREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3803G15MDCKREP 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 TPS3803G15MDCKREP?
For technical support, including TPS3803G15MDCKREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3803G15MDCKREP requirements.
6.How does Aetrix verify that TPS3803G15MDCKREP is sourced from the original manufacturer or authorized distributors?
All TPS3803G15MDCKREP 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 TPS3803G15MDCKREP meets industry standards.
7.What is the process for return or replacement of TPS3803G15MDCKREP?
All TPS3803G15MDCKREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS3803G15MDCKREP, 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 TPS3803G15MDCKREP part is unused and in its original packaging.
Return procedure for TPS3803G15MDCKREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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