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Texas Instruments TPS3803-01MDCKREP
- Part No.:
- TPS3803-01MDCKREP
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS3803-01MDCKREP.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,572
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Product details
Overview
TPS3803-01MDCKREP from Texas Instruments is a radiation-hardened, extended-temperature voltage supervisor IC with adjustable SENSE input, ±1.5% threshold accuracy at 1.226 V, 3 µA typical supply current at 3.3 V, open-drain RESET output, and operation from −55°C to +125°C. It monitors power rails in space-grade DSP and microcontroller reset sequencing.
For engineers reviewing the TPS3803-01MDCKREP datasheet, TPS3803-01MDCKREP pinout, TPS3803-01MDCKREP application, or TPS3803-01MDCKREP equivalent, this page delivers verified functional identity, thermal rating, threshold tolerance, output topology, and SC-70 package constraints for high-reliability embedded system design.
Technical Context
The TPS3803-01MDCKREP implements a precision bandgap reference (1.226 V) feeding a comparator that triggers an open-drain RESET signal when either VDD or the externally configured SENSE voltage falls below threshold. Hysteresis is fixed at 15 mV for thresholds between 1.2 V and 2.5 V.
It operates across 1.3 V to 6 V supply range, supports power-up reset assertion below 1.0 V, and features <25 nA SENSE input leakage. The M-suffix denotes −55°C to +125°C qualification per JEDEC JESD22-A108 and biased 85/85 reliability testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 1.226 V adjustable via external resistor divider on SENSE pin - enables custom rail monitoring without redesign |
| Threshold Accuracy | ±1.5% over −55°C to +125°C - ensures deterministic reset timing across extreme environments |
| Supply Current | 3 µA typical at VDD = 3.3 V - minimizes quiescent load in battery-backed or low-power systems |
| Output Type | Open-drain RESET - allows wired-OR configuration and flexible pull-up voltage selection |
| Operating Temperature | −55°C to +125°C - qualified for space, avionics, and downhole industrial applications |
| Package | 5-pin SC-70 (DCK) - 2.0 mm × 1.25 mm footprint with 0.65 mm pitch, compatible with standard SMT reflow |
| Hysteresis | 15 mV - prevents oscillation during slow-rising or noisy supply transitions |
Pinout & Package
TPS3803-01MDCKREP uses a 5-pin SC-70 (DCK) package with exposed pad not connected internally. Pin 1 is NC (no internal connection); pins 2–5 are GND, RESET, VDD, and SENSE respectively. The package meets JEDEC MO-203 and supports lead-free reflow per Level-1-260°C-UNLIM MSL rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No internal connection | Unused terminal - must be left floating or tied to GND per layout best practice |
| Pin 2 (GND) | Ground reference | Primary return path for internal reference and comparator - requires low-impedance PCB plane |
| Pin 3 (RESET) | Active-low open-drain output | Asserts low during fault; requires external pull-up to define logic-high level and drive strength |
| Pin 4 (VDD) | Supply and primary sense input | Power source and fixed monitoring point - RESET asserts if VDD drops below 0.8 V during power-up |
| Pin 5 (SENSE) | Adjustable voltage monitor input | High-impedance input (±25 nA leakage) for external resistor divider - sets secondary reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Controlled Baseline Manufacturing | Single assembly/test site and single fabrication site - ensures consistent parametric performance across production lots |
| Enhanced DMS Support | Diminishing Manufacturing Sources mitigation - extends long-term component availability for legacy aerospace programs |
| Extended Temperature Qualification | JEDEC-qualified for −55°C to +125°C including HAST, temperature cycling, and electromigration - validated for mission-critical operation |
| Low Input Leakage | ±25 nA max SENSE input current - preserves accuracy of high-impedance resistor dividers without loading error |
| Fast Propagation Delay | 5 µs to 100 µs VDD/SENSE-to-RESET delay - enables rapid fault response in real-time control loops |
Applications
| Avionics Power Sequencing | Satellite Onboard Computer Reset |
|---|---|
Use Scenario: Supervising dual-rail power-up of FPGA and ADC in flight control unit under thermal vacuum conditions. IC Role / Device Role / Timing Role: Primary reset arbiter asserting synchronized RESET after both 1.2 V core and 3.3 V I/O rails stabilize within ±1.5% threshold window. Use Value: Prevents metastability in clock domain crossings by guaranteeing minimum reset pulse width >5.5 µs at all temperatures. |
Use Scenario: Monitoring solar array regulator output and battery bus in LEO satellite payload controller. IC Role / Device Role / Timing Role: Adjustable SENSE input tracks regulated 2.5 V rail; open-drain RESET interfaces directly with radiation-tolerant FPGA reset pin. Use Value: Enables single-component supervision of non-standard voltages without custom ASIC redesign or additional resistors. |
| Downhole Telemetry Module | Military Radar Signal Processor |
Use Scenario: Ensuring clean boot of ARM Cortex-M7 in oil/gas logging tool operating at 125°C ambient. IC Role / Device Role / Timing Role: Monitors 1.8 V analog front-end supply and 3.3 V digital supply using dual-input capability of companion TPS3805H33. Use Value: −55°C to +125°C rating eliminates need for derating or thermal margining in sealed pressure housings. |
Use Scenario: Providing cold-start reset for TI C6748 DSP in airborne electronic warfare system with EMI-prone power distribution. IC Role / Device Role / Timing Role: High-accuracy 1.226 V threshold rejects false resets caused by sub-100 µs supply transients. Use Value: ±1.5% threshold tolerance ensures deterministic reset release timing across full military temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3803-01QDCKREP | Same functionality but rated for −40°C to +125°C; lower temperature qualification scope | Approved for commercial/industrial avionics, not space-grade missions requiring −55°C start-up | Select when full −55°C operation is unnecessary and cost sensitivity outweighs extended qualification |
| TPS3803G15MDCKREP | Fixed 1.40 V threshold (not adjustable); identical package, temp range, and accuracy | Used where only VDD rail monitoring is required - eliminates external resistor network | Choose for simplified BOM and layout when no SENSE flexibility is needed |
Compared with TPS3803-01MDCKREP, the Q-suffix variant trades −55°C capability for lower cost and broader commercial availability, while the G15 variant replaces adjustability with fixed-threshold simplicity - both retain SC-70 packaging and ±1.5% accuracy but serve distinct design constraints.
Availability
TPS3803-01MDCKREP is available at Aetrix Electronics and suitable for avionics power sequencing, satellite onboard computer reset, and downhole telemetry modules requiring stable component supply across extended temperature and radiation-aware environments.
Supply support for TPS3803-01MDCKREP 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 for aerospace, industrial, and automotive markets.
The TPS3803-01MDCKREP belongs to TI's EP (Enhanced Plastic) supervisory circuit family, engineered specifically for extended-temperature, high-stability power monitoring in mission-critical systems where failure is not an option.
FAQ
What is the exact threshold voltage specification for TPS3803-01MDCKREP?
The TPS3803-01MDCKREP has a nominal SENSE input threshold voltage of 1.226 V, with ±1.5% accuracy over the full −55°C to +125°C operating range. This value is derived from an internal 1.226 V reference and applies to the adjustable SENSE pin; VDD monitoring initiates reset below 0.8 V during power-up. The 1.226 V threshold is confirmed in the Electrical Characteristics table of the official datasheet (SGLS227C, Rev. June 2007).
Does TPS3803-01MDCKREP support dual-voltage monitoring like the TPS3805 series?
No, TPS3803-01MDCKREP is a single-supply supervisor with one adjustable SENSE input and primary VDD monitoring. Unlike the TPS3805H33MDCKREP, it does not provide a second independent SENSE channel. Its function is to assert RESET if either VDD drops below 0.8 V at power-up or if the externally configured SENSE voltage falls below 1.226 V during steady-state operation.
What is the meaning of the 'M' suffix in TPS3803-01MDCKREP?
The 'M' suffix in TPS3803-01MDCKREP indicates enhanced temperature qualification: −55°C to +125°C operation, verified per JEDEC JESD22-A108 and industry reliability standards including biased 85/85, temperature cycling, and HAST. This distinguishes it from the 'Q' suffix (−40°C to +125°C), confirming its suitability for space, defense, and extreme-environment applications.
Can TPS3803-01MDCKREP drive a microcontroller reset pin directly?
Yes, TPS3803-01MDCKREP can drive a microcontroller reset pin directly via its open-drain RESET output. An external pull-up resistor (typically 4.7 kΩ to the target logic supply) is required to establish the high state. The device sinks up to 5 mA (absolute max), and typical VOL is ≤0.3 V at 2 mA - compatible with standard CMOS reset inputs across 1.8 V to 5 V logic families.
Is the NC pin on TPS3803-01MDCKREP required to be grounded or left floating?
Pin 1 of TPS3803-01MDCKREP is designated NC (no internal connection) and may be left floating. However, TI's board layout recommendations advise connecting NC pins to GND to minimize noise coupling and improve mechanical stability in high-vibration environments such as aerospace or downhole applications. No electrical function is affected either way.
TPS3803-01MDCKREP 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:
- Adjustable/Selectable
- 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
TPS3803-01MDCKREP FAQ
1.How can I place an order for TPS3803-01MDCKREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3803-01MDCKREP 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 TPS3803-01MDCKREP reliable?
The price and inventory of TPS3803-01MDCKREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3803-01MDCKREP is usually 5 days.
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TPS3803-01MDCKREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3803-01MDCKREP 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 TPS3803-01MDCKREP?
For technical support, including TPS3803-01MDCKREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3803-01MDCKREP requirements.
6.How does Aetrix verify that TPS3803-01MDCKREP is sourced from the original manufacturer or authorized distributors?
All TPS3803-01MDCKREP 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 TPS3803-01MDCKREP meets industry standards.
7.What is the process for return or replacement of TPS3803-01MDCKREP?
All TPS3803-01MDCKREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS3803-01MDCKREP, 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 TPS3803-01MDCKREP part is unused and in its original packaging.
Return procedure for TPS3803-01MDCKREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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