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Texas Instruments TLC7725QPWRG4
- Part No.:
- TLC7725QPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7725QPWRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
TLC7725QPWRG4 from Texas Instruments is a micropower supply voltage supervisor IC with fixed 2.25 V sense threshold, active-low RESET output, programmable delay via external capacitor, and operation across –40°C to 125°C. It provides power-on reset generation, undervoltage supervision, and power-down control for static RAM with battery backup in microprocessor systems.
For engineers reviewing the TLC7725QPWRG4 datasheet, TLC7725QPWRG4 pinout, TLC7725QPWRG4 application, or TLC7725QPWRG4 equivalent, this page delivers verified specifications, DRB package terminal mapping, real-world use cases in industrial and medical systems, and validated alternative parts for design continuity and sourcing flexibility.
Technical Context
The TLC7725QPWRG4 implements a precision voltage-sensing comparator with temperature-compensated internal reference, hysteresis of 70 mV, and defined RESET assertion at VDD ≥1 V. Its internal timer generates a user-configurable delay (td = 2.1 × 10⁴ × CT) after SENSE voltage recovers above threshold.
It supports dual-mode reset control: standard undervoltage monitoring on SENSE, and power-down coordination via CONTROL input tied to GND for active-high RESET - enabling automatic chip-select disable during brownout for battery-backed SRAM retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold Voltage | 2.25 V (fixed, ±0.07 V tolerance); sets precise undervoltage trip point for 2.7 V–3.3 V rail monitoring |
| Supply Voltage Range | 2 V to 6 V; enables direct interface with Li-ion, 3.3 V, and 5 V systems without level-shifting |
| Supply Current | 16 µA max (IDD); ensures micropower operation critical for battery-backed or energy-constrained designs |
| Reset Delay Time | Programmable via external CT (td = 2.1 × 10⁴ × CT); e.g., 2.1 ms with 100 nF capacitor for reliable system initialization |
| Operating Temperature | –40°C to 125°C (Q-grade); qualified for under-hood automotive, industrial control, and medical imaging environments |
| Output Type | Active-low totem-pole RESET; drives 2 mA low / –2 mA high, eliminating need for external pull-up resistors |
| Hysteresis | 70 mV; prevents chatter during slow-rising or noisy supply transitions near threshold |
Pinout & Package
The TLC7725QPWRG4 is housed in an 8-pin 3×3 mm SON (DRB) package with wettable flanks, RoHS-compliant, and rated for moisture sensitivity level (MSL) 1 at 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2–6 V; powers internal reference, comparator, and output stage |
| GND | Ground reference | Return path for all currents; must be low-impedance for stable threshold accuracy |
| SENSE | Voltage monitor input | Compares applied voltage against 2.25 V internal reference; triggers reset when below threshold |
| RESET | Active-low reset output | Drives microcontroller / processor reset pin low during fault; open-drain compatible with pull-up |
| CONTROL | Mode selection input | When tied to GND, configures RESET as active-high for SRAM power-down control logic |
| RESIN | Manual reset input | Active-low asynchronous reset override; forces RESET low regardless of SENSE state |
| NC | No connect | Pins 1 and 8 are unconnected; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Power-on reset generator | Asserts RESET at VDD ≥1 V, ensuring clean boot before core logic becomes operational |
| Automatic reset after voltage drop | Detects SENSE falling below 2.25 V and holds RESET active until recovery + delay expires |
| Programmable delay time | External capacitor sets delay (e.g., 100 nF → 2.1 ms), eliminating fixed-timing ICs or RC networks |
| Defined RESET from VDD ≥1 V | Guarantees functional reset assertion even during deep brownout conditions |
| Power-down control support | Enables automatic SRAM chip-select disable during main power loss using CONTROL/GND configuration |
Applications
| Industrial PLC Controller | Medical Imaging Power Sequencing |
|---|---|
|
Use Scenario: Monitoring 3.3 V I/O rail in programmable logic controller during cold start and transient load events. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection with 2.25 V threshold aligned to 3.3 V ±5% spec. Use Value: Prevents firmware lockup by asserting RESET until rail stabilizes >2.25 V and remains valid for ≥2.1 ms post-recovery. |
Use Scenario: Ensuring data integrity in MRI subsystems with battery-backed SRAM during AC mains interruption. IC Role / Device Role / Timing Role: Supervisor configured with CONTROL = GND to generate active-high RESET for SRAM chip-select disable during brownout. Use Value: Enables seamless transition to battery power without data corruption, leveraging built-in delay to avoid false triggers on ripple. |
| Automotive Body Control Module | Energy Meter with Tamper Detection |
|
Use Scenario: Supervising 5 V sensor supply in under-hood BCM exposed to –40°C to 125°C ambient. IC Role / Device Role / Timing Role: Q-grade voltage supervisor delivering guaranteed operation across full automotive temperature range. Use Value: Eliminates need for external temperature compensation or derating, reducing BOM count and validation effort. |
Use Scenario: Detecting unauthorized power removal in smart electricity meters to trigger secure memory write and shutdown. IC Role / Device Role / Timing Role: Micropower supervisor (16 µA IDD) monitoring VDD with manual RESIN override for tamper event capture. Use Value: Extends backup battery life while ensuring immediate, deterministic reset assertion upon power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7725QPWR | Same electrical specs and DRB package; G4 suffix denotes green (lead-free) finish per TI specification | No functional difference; identical performance and footprint | Select TLC7725QPWRG4 for RoHS-compliant, lead-free assembly; TLC7725QPWR is legacy marking |
| TPS3808G25DBVR | 2.5 V threshold, 350 nA quiescent current, fixed 200 ms delay, SOT-23-6 package | Lacks CONTROL input and SRAM power-down logic; lower IQ but no manual reset (RESIN) | Choose TPS3808G25DBVR only if ultra-low power (<1 µA) and fixed delay suffice, and SRAM control is unnecessary |
Compared with TLC7725QPWR and TPS3808G25DBVR, the TLC7725QPWRG4 uniquely combines Q-grade temperature range, programmable delay, manual reset (RESIN), and SRAM power-down control - making it irreplaceable in applications requiring robust brownout response and battery-backed memory coordination.
Availability
TLC7725QPWRG4 is available at Aetrix Electronics and suitable for industrial control, automotive body electronics, and medical imaging systems requiring stable component supply, long-term lifecycle support, and extended temperature qualification.
Supply support for TLC7725QPWRG4 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 designing analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
The TLC77xx family was engineered specifically for micropower, high-accuracy voltage supervision in mission-critical embedded systems where reliability across extreme temperatures and low quiescent current are mandatory.
FAQ
What is the exact sense threshold voltage of the TLC7725QPWRG4?
The TLC7725QPWRG4 has a fixed negative-going input threshold voltage (VIT–) of 2.25 V, with typical tolerance of ±0.07 V over temperature and supply voltage. This value is factory-trimmed and specified in the Electrical Characteristics table under "Negative-going input threshold voltage, SENSE" for the TLC7725 variant.
Does the TLC7725QPWRG4 support active-high RESET output?
Yes - the TLC7725QPWRG4 supports active-high RESET when the CONTROL pin is tied to GND. In this configuration, the RESET output asserts high during undervoltage or power-on conditions, enabling direct interface with SRAM chip-select inputs requiring active-high enable signals.
How is the reset delay time set on the TLC7725QPWRG4?
The reset delay time (td) on the TLC7725QPWRG4 is set externally using a capacitor (CT) connected between the CT pin and GND. The relationship is td = 2.1 × 10⁴ × CT, yielding 2.1 ms with a 100 nF capacitor. No resistor is required - only CT determines timing.
What is the operating temperature range of the TLC7725QPWRG4?
The TLC7725QPWRG4 is a Q-grade device rated for operation from –40°C to +125°C ambient temperature. This qualification aligns with AEC-Q100 stress test requirements for automotive under-hood applications and industrial environments with wide thermal excursions.
Can the TLC7725QPWRG4 monitor a 5 V supply rail?
Yes - the TLC7725QPWRG4 supports supply voltages from 2 V to 6 V, and its 2.25 V sense threshold is appropriate for monitoring 5 V rails where undervoltage detection is needed at ~45% of nominal (e.g., detecting drop below 4.5 V via resistive divider). Direct SENSE connection requires scaling via external resistor divider.
TLC7725QPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.25V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1.1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7725QPWRG4 FAQ
1.How can I place an order for TLC7725QPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7725QPWRG4 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 TLC7725QPWRG4 reliable?
The price and inventory of TLC7725QPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7725QPWRG4 is usually 5 days.
3.What payment methods are accepted for TLC7725QPWRG4?
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4.How is shipping managed for TLC7725QPWRG4?
TLC7725QPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7725QPWRG4 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 TLC7725QPWRG4?
For technical support, including TLC7725QPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7725QPWRG4 requirements.
6.How does Aetrix verify that TLC7725QPWRG4 is sourced from the original manufacturer or authorized distributors?
All TLC7725QPWRG4 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 TLC7725QPWRG4 meets industry standards.
7.What is the process for return or replacement of TLC7725QPWRG4?
All TLC7725QPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7725QPWRG4, 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 TLC7725QPWRG4 part is unused and in its original packaging.
Return procedure for TLC7725QPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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