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Texas Instruments TPS3307-25DRG4
- Part No.:
- TPS3307-25DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS3307-25DRG4.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,226
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Product details
Overview
TPS3307-25DRG4 from Texas Instruments is a triple-voltage supervisor IC designed for DSP, microcontroller, and microprocessor systems requiring independent monitoring of 3.3V, 2.5V, and adjustable supply rails. It delivers fixed 200ms power-on reset delay, operates from 2V to 6V supply, draws ≤40µA quiescent current, and features dual active-low/high RESET outputs. It is deployed in industrial programmable controllers and automotive ECUs where reliable multi-rail power sequencing is critical.
For engineers reviewing the TPS3307-25DRG4 datasheet, TPS3307-25DRG4 pinout, TPS3307-25DRG4 application, or TPS3307-25DRG4 equivalent, key selection criteria include SENSE1/SENSE2 threshold accuracy (2.93V / 2.25V), manual reset (MR) timing compatibility, SOIC-8 thermal performance, and guaranteed RESET assertion down to VDD ≥1.1V.
Technical Context
The TPS3307-25DRG4 integrates three independent voltage comparators with temperature-compensated 1.25V reference, enabling precise monitoring of nominal 3.3V (SENSE1), 2.5V (SENSE2), and user-defined >1.25V (SENSE3) supplies. Each input exhibits hysteresis (20mV typical at 2.25V threshold) to prevent noise-induced false resets.
Its internal 200ms reset timer initiates only after all three SENSE inputs exceed their respective VIT+ thresholds; RESET remains asserted if any SENSE drops below VIT–. The MR input provides asynchronous reset control, while dual complementary RESET outputs support both active-low and active-high logic interface requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 2V to 6V - supports wide-input systems including 3.3V and 5V domains without external regulation |
| SENSE1 threshold (VIT+) | 2.93V (typ) - precisely monitors 3.3V rail with ±3% tolerance over –40°C to +85°C |
| SENSE2 threshold (VIT+) | 2.25V (typ) - targets 2.5V rail with dedicated hysteresis (20mV) for noise immunity |
| Reset delay time | 200ms (typ) - fixed internal timer ensures robust system initialization without external capacitor |
| Quiescent supply current | 40µA (max) - enables use in battery-powered and low-power embedded applications |
| Operating temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
| RESET assertion voltage | VDD ≥1.1V - guarantees early reset activation during brownout conditions |
Pinout & Package
TPS3307-25DRG4 is packaged in an 8-pin SOIC (D) package with 1.27mm pitch, 3.9mm × 4.9mm body, and 1.75mm max height. The exposed pad is not present - this is a standard SOIC, not PowerPAD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SENSE1 | Input | Monitors primary 3.3V supply; asserts RESET if voltage falls below 2.93V (VIT+) |
| 2 - SENSE2 | Input | Monitors secondary 2.5V supply; threshold = 2.25V (VIT+) with 20mV hysteresis |
| 3 - SENSE3 | Input | Adjustable monitor for any supply >1.25V via external resistor divider; VIT+ = 1.25V |
| 4 - GND | Power | Analog and digital ground reference; must be low-impedance connection to system ground plane |
| 5 - RESET | Output | Active-low open-drain reset signal; requires external pull-up for logic-level compatibility |
| 6 - RESET | Output | Active-high push-pull reset signal; drives high/low directly without pull-up |
| 7 - MR | Input | Manual reset input; low pulse ≥100ns forces immediate RESET assertion regardless of SENSE states |
| 8 - VDD | Power | Primary supply input (2–6V); powers internal reference, comparators, and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent voltage supervision | Enables simultaneous monitoring of 3.3V, 2.5V, and custom rails - eliminates need for three discrete supervisors |
| Fixed 200ms reset timeout | Guarantees sufficient hold time for processor core, PLLs, and memory initialization without external RC components |
| Dual RESET outputs (active-low & active-high) | Simplifies interface to diverse host logic families (e.g., ARM reset_n, FPGA reset_b, CPLD reset) |
| Temperature-compensated 1.25V reference | Maintains ±1.5% threshold stability across –40°C to +85°C - critical for consistent reset behavior in varying environments |
| Ultra-low 40µA supply current | Reduces standby power in always-on subsystems such as CAN wake-up controllers or sensor hubs |
Applications
| Industrial Programmable Logic Controller (PLC) | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Monitors 3.3V I/O, 2.5V ADC reference, and 5V sensor supply in a DIN-rail mounted PLC with real-time Ethernet interface. IC Role / Device Role / Timing Role: Triple supervisor ensures synchronized power-up of CPU, FPGA, and analog front-end before firmware execution begins. Use Value: Prevents metastability and register corruption by enforcing 200ms minimum reset hold time across all voltage domains. |
Use Scenario: Supervises 3.3V MCU core, 2.5V knock sensor amplifier, and 12V-to-5V converted supply in a gasoline ECU operating at 125°C ambient. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation when any monitored rail dips during cranking or load dump events. Use Value: Dual RESET outputs drive both microcontroller reset_n and external watchdog enable simultaneously, eliminating timing skew. |
| Portable Medical Infusion Pump | Network Edge Router Control Plane |
|
Use Scenario: Ensures reliable boot sequence in a battery-powered infusion pump using Li-ion (3.0–4.2V), regulated 3.3V, and 2.5V precision DAC supply. IC Role / Device Role / Timing Role: SENSE3 configured for battery voltage monitoring triggers graceful shutdown before undervoltage lockout. Use Value: 40µA quiescent current extends battery life between calibrations; MR pin enables nurse-initiated system reboot. |
Use Scenario: Manages power sequencing for multi-core ARM SoC, DDR3 memory, and 12.5Gbps SerDes PHY in carrier-grade router line cards. IC Role / Device Role / Timing Role: Coordinates reset release across heterogeneous subsystems using programmable SENSE3 threshold and MR synchronization. Use Value: Fixed 200ms delay aligns with DDR3 tINIT specification; hysteresis prevents spurious resets during transient load switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3307-25DGNR | HVSSOP-8 (DGN) package; 3.0mm × 3.0mm footprint; 1.1mm max height; same electrical specs | Better thermal performance and higher density layout; requires different PCB land pattern and stencil design | Select for space-constrained designs needing improved θJA; verify solder paste volume for exposed thermal pad |
| MAX6816TPA+ | Single 3.3V supervisor; no SENSE2/SENSE3; 140ms reset delay; 20µA IQ; ±1.5% threshold accuracy | Lacks triple-monitoring capability; suitable only for single-rail systems or where external resistive dividers compensate | Choose only if supervising one rail; insufficient for TPS3307-25DRG4's 3-rail function - not drop-in |
Compared with TPS3307-25DGNR, the TPS3307-25DRG4 offers identical supervision functionality in a legacy SOIC-8 package compatible with existing wave-solder processes, while MAX6816TPA+ lacks multi-rail capability entirely and cannot replace the triple-monitoring architecture.
Availability
TPS3307-25DRG4 is available at Aetrix Electronics and suitable for industrial programmable controls, automotive engine management systems, and portable medical equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS3307-25DRG4 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 experience in high-reliability industrial and automotive ICs.
The TPS3307 family was engineered specifically for DSP and microprocessor-based systems needing deterministic multi-rail power monitoring and reset generation - targeting applications where failure to detect undervoltage on auxiliary rails causes silent data corruption.
FAQ
What is the exact SENSE2 threshold voltage for TPS3307-25DRG4?
The SENSE2 threshold (VIT+) for TPS3307-25DRG4 is 2.25V (typical), with min/max values of 2.20V and 2.30V over –40°C to +85°C. This value is factory-trimmed and specified in the Electrical Characteristics table of the SLVS199C datasheet. The TPS3307-25DRG4 uses this fixed threshold to supervise a nominal 2.5V supply rail with built-in hysteresis.
Does TPS3307-25DRG4 require an external capacitor for its reset delay?
No, the TPS3307-25DRG4 does not require an external capacitor for its reset delay. Its internal timer provides a fixed 200ms (typical) delay after all SENSE inputs exceed their thresholds. This eliminates component count, board area, and tolerance-related timing variation - a key differentiator versus adjustable-reset supervisors like the TPS3823.
Can TPS3307-25DRG4 monitor a 1.8V supply on SENSE2?
No, TPS3307-25DRG4 is not designed to monitor 1.8V on SENSE2. Its SENSE2 input is factory-configured for 2.5V supervision (VIT+ = 2.25V). To monitor 1.8V, use the TPS3307-18DRG4 variant instead, which specifies SENSE2 VIT+ = 1.68V. Using TPS3307-25DRG4 for 1.8V would result in premature or failed reset assertion.
What is the maximum sink current capability of the active-low RESET pin on TPS3307-25DRG4?
The active-low RESET output on TPS3307-25DRG4 is an open-drain driver rated for 5mA maximum sink current (IOL) at VO = 0.4V. At 3.3V VDD and 2mA load, VOL is guaranteed ≤0.4V. This allows direct interfacing with 3.3V or 5V logic families when paired with appropriate pull-up resistors (e.g., 10kΩ to 3.3V).
Is TPS3307-25DRG4 RoHS compliant and lead-free?
Yes, TPS3307-25DRG4 is RoHS compliant and lead-free. Per TI's Package Option Addendum, the part carries "NIPDAU" (nickel-palladium-gold) lead finish and meets JEDEC Level-1 moisture sensitivity standards. The "G4" suffix in TPS3307-25DRG4 explicitly denotes green (halogen-free, RoHS-compliant) packaging per TI's ordering nomenclature.
TPS3307-25DRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 2.25V, 2.93V, Adj
- 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-SOIC
TPS3307-25DRG4 FAQ
1.How can I place an order for TPS3307-25DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3307-25DRG4 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 TPS3307-25DRG4 reliable?
The price and inventory of TPS3307-25DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3307-25DRG4 is usually 5 days.
3.What payment methods are accepted for TPS3307-25DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3307-25DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3307-25DRG4?
TPS3307-25DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3307-25DRG4 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 TPS3307-25DRG4?
For technical support, including TPS3307-25DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3307-25DRG4 requirements.
6.How does Aetrix verify that TPS3307-25DRG4 is sourced from the original manufacturer or authorized distributors?
All TPS3307-25DRG4 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 TPS3307-25DRG4 meets industry standards.
7.What is the process for return or replacement of TPS3307-25DRG4?
All TPS3307-25DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3307-25DRG4, 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 TPS3307-25DRG4 part is unused and in its original packaging.
Return procedure for TPS3307-25DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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