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Texas Instruments TPS3707-50DGN
- Part No.:
- TPS3707-50DGN
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS3707-50DGN.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
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Product details
Overview
TPS3707-50DGN from Texas Instruments is a precision 5-V supply voltage supervisor IC with active-low and active-high reset outputs, power-fail comparator (PFI/PFO), manual reset input (MR), and fixed 200-ms power-on reset delay. It operates from 2 V to 6 V, draws ≤50 µA supply current, and is rated for –40°C to 85°C ambient temperature in an 8-pin MSOP-PowerPAD package. It is used in microcontroller-based systems requiring reliable power sequencing and brownout detection.
For engineers reviewing the TPS3707-50DGN datasheet, TPS3707-50DGN pinout, TPS3707-50DGN application, or TPS3707-50DGN equivalent, key selection considerations include its dual-reset output configuration (RESET and RESET), 4.55 V negative-going threshold (VIT–), PFI comparator input for auxiliary rail monitoring, absence of watchdog timer, and compatibility with industrial-grade embedded control and battery-backed systems.
Technical Context
The TPS3707-50DGN implements a precision bandgap reference and dual comparators: one monitors VDD against a factory-trimmed 4.55 V threshold (±2.5% over temperature), the other compares PFI against a fixed 1.25 V internal reference. Its reset logic asserts active-low RESET when VDD falls below VIT–, and active-high RESET when VDD rises above VIT+, providing complementary reset signaling without external inversion.
Unlike the TPS3705-xx series, the TPS3707-xx family omits the watchdog timer circuitry and WDI/WDO pins, simplifying design where system-level supervision suffices. The MR input provides asynchronous reset assertion, while PFO delivers open-drain power-fail warning with sub-microsecond propagation delay (0.5–1 µs) and 10 mV hysteresis on PFI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIT– Threshold | 4.55 V (±2.5% over –40°C to 85°C); ensures reliable 5-V rail brownout detection before processor malfunction |
| Reset Delay | 200 ms fixed (no capacitor required); guarantees sufficient hold time for full microcontroller initialization |
| Supply Current | ≤50 µA at 2–6 V; enables low-power operation in battery-backed or energy-sensitive applications |
| PFI Input Range | 0–VDD; supports monitoring of auxiliary rails (e.g., 12 V via resistor divider) with 1.25 V internal reference |
| Output Types | Active-low open-drain RESET + active-high push-pull RESET; eliminates need for external inverter in dual-signaling systems |
| Operating Temp | –40°C to 85°C; qualified for industrial ambient environments without derating |
| Package | 8-pin MSOP-PowerPAD (3.0 mm × 3.0 mm); provides enhanced thermal performance (RθJB = 45.1°C/W) |
Pinout & Package
TPS3707-50DGN is housed in an 8-pin MSOP-PowerPAD (DGN) package with exposed thermal pad. Pin 1 is RESET (active-low, open-drain), Pin 2 is RESET (active-high, push-pull), Pin 3 is MR (manual reset input), Pin 4 is VDD (supply), Pin 5 is GND, Pin 6 is PFI (power-fail input), Pin 7 is PFO (power-fail output), and Pin 8 is NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET (Pin 1) | Active-low reset output | Open-drain output requiring external pull-up; asserts low during VDD undervoltage or MR assertion |
| RESET (Pin 2) | Active-high reset output | Push-pull output; asserts high during valid VDD and deasserts low during fault or MR event |
| MR (Pin 3) | Manual reset input | Active-low input; forces both RESET outputs into fault state regardless of VDD level |
| VDD (Pin 4) | Supply voltage input | Accepts 2–6 V; powers internal reference, comparators, and output drivers |
| GND (Pin 5) | Ground reference | Primary return path for all internal circuits and output loads |
| PFI (Pin 6) | Power-fail comparator input | Monitors auxiliary voltage rail; triggers PFO when input drops below 1.25 V reference |
| PFO (Pin 7) | Power-fail comparator output | Open-drain output; signals low-battery or secondary rail failure with 0.5–1 µs response |
| NC (Pin 8) | No internal connection | Not bonded; must be left unconnected or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual-complementary reset outputs | Simultaneous active-low and active-high reset signaling eliminates external logic inversion and reduces BOM count |
| Fixed 200-ms reset timeout | Eliminates timing capacitor and associated component tolerance/aging drift, improving long-term reliability |
| Integrated PFI/PFO comparator | Enables monitoring of non-primary rails (e.g., 12 V, 3.3 V) using simple resistor dividers without additional ICs |
| Low 50-µA quiescent current | Extends battery life in portable equipment and reduces self-heating in thermally constrained enclosures |
| MSOP-PowerPAD thermal package | 45.1°C/W junction-to-board resistance enables stable operation at full rating without heatsink in PCB-constrained designs |
Applications
| Industrial PLC Control | Automotive Body Controller |
|---|---|
Use Scenario: Supervises 5-V microcontroller supply in programmable logic controller modules operating in factory-floor environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Provides power-on reset, brownout detection, and manual reset capability; asserts RESET until VDD stabilizes above 4.55 V for ≥200 ms. Use Value: Prevents erratic firmware execution during unstable line conditions and ensures deterministic startup after power cycling. | Use Scenario: Monitors main 5-V domain and auxiliary 12-V battery rail in automotive body control units with CAN communication. IC Role / Device Role / Timing Role: Uses VDD input for primary rail supervision and PFI input (via resistor divider) for battery voltage warning; drives PFO to MCU interrupt pin. Use Value: Enables early low-battery alert before critical functions fail, supporting graceful shutdown and diagnostic logging. |
| Portable Medical Monitor | Smart Energy Meter |
Use Scenario: Ensures reliable boot sequence in battery-powered patient vital sign monitors with dual-supply architecture (5-V analog front-end, 3.3-V digital core). IC Role / Device Role / Timing Role: Generates synchronized reset pulses for both domains using RESET and RESET outputs; PFI monitors backup coin-cell voltage. Use Value: Guarantees coordinated initialization across mixed-voltage subsystems and preserves calibration data during brownout events. | Use Scenario: Supervises 5-V supply in ANSI C12.22-compliant smart meters deployed in outdoor utility cabinets with wide ambient temperature range. IC Role / Device Role / Timing Role: Detects AC mains dropout via PFI (fed from rectified line), asserts PFO to trigger backup power switchover and log outage duration. Use Value: Supports accurate outage reporting and seamless transition to supercapacitor backup without software intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3707-50D | Same electrical specs and pinout, but in 8-pin SOIC (3.9 mm × 4.9 mm) package with higher RθJA (118.2°C/W) | Preferred for through-hole assembly or legacy board layouts requiring SOIC footprint | Select TPS3707-50D when thermal budget allows larger package or reflow compatibility is not required |
| MAX706T | 5-V supervisor with active-low RESET only, no complementary output or PFI input; 200-ms delay, 10-µA IDD | Suitable for cost-sensitive designs needing basic reset only, without auxiliary rail monitoring | Choose MAX706T only if dual-reset signaling and PFI functionality are unnecessary and ultra-low current is prioritized |
Compared with TPS3707-50DGN, the SOIC variant offers identical functionality with relaxed thermal performance, while MAX706T sacrifices PFI capability and complementary reset for lower quiescent current and legacy compatibility-making TPS3707-50DGN optimal for space-constrained, thermally demanding, or multi-rail monitoring applications.
Availability
TPS3707-50DGN is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and portable medical devices requiring stable component supply, guaranteed long-term availability, and traceable sourcing.
Supply support for TPS3707-50DGN 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS370x-xx product line was designed specifically for robust, low-power microprocessor supervision in harsh environments-emphasizing precision threshold accuracy, integrated power-fail detection, and simplified system-level reset architecture.
FAQ
What is the exact reset threshold voltage for TPS3707-50DGN?
The TPS3707-50DGN has a factory-trimmed negative-going supply voltage threshold (VIT–) of 4.55 V, with ±2.5% tolerance over the full –40°C to 85°C operating temperature range. This value is specified in the Electrical Characteristics table (Section 7.5) and applies directly to the TPS3707-50DGN device under recommended operating conditions (VDD = 2 V to 6 V).
Does TPS3707-50DGN include a watchdog timer function?
No, the TPS3707-50DGN does not include a watchdog timer. Unlike the TPS3705-xx series, the TPS3707-xx family omits WDI and WDO pins and related circuitry. The TPS3707-50DGN provides only VDD supervision, manual reset, and power-fail monitoring-confirmed in Section 8.3.3 and the Pin Functions table of the datasheet.
What is the purpose of the NC pin on TPS3707-50DGN?
Pin 8 of the TPS3707-50DGN is designated NC (No Connection) and is not internally bonded. It must remain unconnected or be tied to GND per TI's layout recommendations to avoid noise coupling. This is explicitly stated in the Pin Functions table (Section 6.1) and confirmed in Figure 6-4 (MSOP-PowerPAD top view) of the datasheet.
Can TPS3707-50DGN monitor a 12-V rail?
Yes, the TPS3707-50DGN can monitor a 12-V rail using its PFI input with an external resistor divider. The PFI pin accepts voltages from 0 V to VDD, and the internal comparator references a 1.25-V threshold. For example, a 910-kΩ/120-kΩ divider scales 12 V to ~1.25 V at PFI-exactly as shown in the Typical MSP430 Application (Figure 9-1) in the datasheet.
What is the maximum supply voltage rating for TPS3707-50DGN?
The absolute maximum supply voltage (VDD) for TPS3707-50DGN is 7 V, as specified in Section 7.1 (Absolute Maximum Ratings). However, for reliable continuous operation, the datasheet limits VDD to 6 V under Recommended Operating Conditions (Section 7.3), and warns that operation at 7 V should not exceed 1000 hours.
TPS3707-50DGN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.55V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
TPS3707-50DGN FAQ
1.How can I place an order for TPS3707-50DGN through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3707-50DGN 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 TPS3707-50DGN reliable?
The price and inventory of TPS3707-50DGN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3707-50DGN is usually 5 days.
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TPS3707-50DGN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3707-50DGN 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 TPS3707-50DGN?
For technical support, including TPS3707-50DGN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3707-50DGN requirements.
6.How does Aetrix verify that TPS3707-50DGN is sourced from the original manufacturer or authorized distributors?
All TPS3707-50DGN 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 TPS3707-50DGN meets industry standards.
7.What is the process for return or replacement of TPS3707-50DGN?
All TPS3707-50DGN units undergo pre-shipment inspection (PSI). If there is an issue with TPS3707-50DGN, 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 TPS3707-50DGN part is unused and in its original packaging.
Return procedure for TPS3707-50DGN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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