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Texas Instruments TLC7725IPWR
- Part No.:
- TLC7725IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7725IPWR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,641
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Product details
Overview
TLC7725IPWR 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 2 V to 6 V supply range. It provides power-on reset generation, undervoltage supervision, and power-down control for static RAM with battery backup - used in medical imaging systems requiring reliable low-power reset assurance.
For engineers reviewing the TLC7725IPWR datasheet, TLC7725IPWR pinout, TLC7725IPWR application, or TLC7725IPWR equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases in safety-critical embedded systems, and two confirmed alternative supervisors with documented functional and timing differences.
Technical Context
The TLC7725IPWR implements a precision bandgap-based voltage reference with temperature compensation to maintain stable 2.25 V (±3%) threshold detection over –40°C to 85°C. Its internal timer generates a user-programmable reset delay (td = 2.1 × 10⁴ × CT) after SENSE voltage recovers above threshold.
It features dual-output logic: active-low RESET and active-high RESET, both asserted when VDD ≥1 V and SENSE < VIT–. The CONTROL input enables RAM power-down mode by configuring RESET polarity and enabling chip-select gating during brownout events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold Voltage | 2.25 V ±3% - ensures accurate 2.25 V supply monitoring with hysteresis of 70 mV to prevent chatter near threshold |
| Supply Voltage Range | 2 V to 6 V - supports single-cell Li-ion, 3.3 V, and 5 V rail supervision without external regulation |
| Supply Current (IDD) | 9–16 µA - enables multi-year battery life in always-on medical or industrial monitoring systems |
| Reset Delay Time (td) | 1.1–4.2 ms with 100 nF capacitor - configurable delay ensures full system initialization before release |
| Operating Temperature | –40°C to +85°C - qualified for commercial/industrial environments including portable diagnostic equipment |
| Output Drive Strength | 2 mA sink/source - sufficient to directly drive microcontroller reset inputs and CMOS memory CS lines |
| Power-Up Reset Voltage (Vres) | 1 V - guarantees RESET assertion even during slow-ramp or weak-supply power-up sequences |
Pinout & Package
The TLC7725IPWR is housed in an 8-pin TSSOP (PW) package measuring 3.0 mm × 4.4 mm × 1.2 mm, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for all internal circuitry and output drivers; must be low-impedance connection |
| VDD | Positive supply input | Power source for internal reference, comparator, and output stage; bypass with 0.1 µF ceramic capacitor |
| SENSE | Voltage monitor input | Connects to regulated rail under supervision; triggers reset when voltage drops below 2.25 V |
| CONTROL | Polarity and RAM control input | When grounded, configures RESET as active-high for static RAM chip-select disable during power loss |
| RESIN | Manual reset input | Active-low asynchronous reset override; pulls RESET low when driven below 0.2×VDD |
| RESET | Active-low reset output | Open-drain compatible output; requires external pull-up; asserts low during fault or power-up |
| RESET | Active-high reset output | Complementary to RESET; asserts high during fault or power-up; no external pull-up needed |
| NC | No connect | Unbonded pin; must remain floating or grounded per layout guidelines to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Programmable reset delay | Delay time set precisely by external capacitor (td = 2.1 × 10⁴ × CT), eliminating need for fixed-timing ICs or RC networks |
| Defined RESET at VDD ≥1 V | Guarantees early reset assertion during power ramp-up, preventing metastability in microcontrollers powered from weak sources |
| Power-down control for SRAM | Enables automatic battery-backed memory retention by driving CS line via CONTROL-configured RESET during brownout |
| Temperature-compensated reference | Maintains ±3% threshold accuracy over –40°C to +85°C, critical for consistent reset behavior in varying ambient conditions |
| Low quiescent current | 16 µA max IDD allows integration into energy-sensitive applications like portable ultrasound or infusion pumps |
Applications
| Medical Imaging Power Sequencing | Industrial PLC I/O Module Supervision |
|---|---|
|
Use Scenario: Ensuring clean power-up and brownout recovery in portable X-ray detector modules with FPGA and analog front-end. IC Role / Device Role: Primary voltage supervisor monitoring 3.3 V analog supply and generating synchronized reset for FPGA and ADC. Use Value: Prevents corrupted image capture by holding system in reset until 3.3 V rail stabilizes within ±2% and remains above 2.25 V for ≥2 ms. |
Use Scenario: Monitoring 5 V backplane supply in modular PLC chassis where undervoltage must trigger safe I/O shutdown. IC Role / Device Role: Fault-detection node asserting RESET to CPU and disabling relay drivers via CONTROL-linked logic. Use Value: Enables deterministic fail-safe state transition using active-high RESET to de-energize safety relays before bus collapse. |
| Battery-Backed Data Logger | Automotive Infotainment MCU Reset |
|
Use Scenario: Maintaining SRAM data integrity during main power interruption in environmental sensor loggers powered by Li-ion + supercapacitor. IC Role / Device Role: Dual-role supervisor: monitors VDD and controls SRAM chip select via CONTROL input during brownout. Use Value: Automatically disables SRAM access when 3.3 V drops below 2.25 V, preserving stored calibration data without firmware intervention. |
Use Scenario: Providing robust reset signaling to infotainment SoC during cold-crank (battery dip to 6 V) and load-dump transients. IC Role / Device Role: Secondary supervisor verifying 3.3 V LDO output stability before releasing application processor from reset. Use Value: Delivers 2.25 V threshold tighter than typical 2.93 V supervisors, catching marginal LDO faults before boot corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G25DBVR | Fixed 2.5 V threshold, 350 nA IQ, 200 ms min delay (non-programmable), open-drain only | Lacks dual RESET/RESET outputs and CONTROL-driven SRAM power-down logic | Choose for ultra-low-power, long-delay applications where SRAM control is unnecessary |
| MAX6326UT23D3+T | 2.32 V threshold, 1.6 µA IQ, 140 ms fixed delay, push-pull RESET only | No CONTROL input; no provision for battery-backed memory disable; smaller temp range (–40°C to +85°C) | Prefer when board space is constrained and only basic reset assertion is required |
Compared with TLC7725IPWR, TPS3808G25DBVR offers 45× lower quiescent current but forfeits programmable delay and SRAM control; MAX6326UT23D3+T provides tighter threshold tolerance (±1.5%) yet lacks dual outputs and manual reset input, limiting system-level fault response flexibility.
Availability
TLC7725IPWR is available at Aetrix Electronics and suitable for medical imaging subsystems, industrial PLC I/O modules, and battery-backed data loggers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TLC7725IPWR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and low-power design.
The TLC77xx family was engineered specifically for micropower voltage supervision in safety-critical embedded systems - prioritizing guaranteed reset assertion at low VDD, temperature-stable thresholds, and integrated power-down control for nonvolatile memory retention.
FAQ
What is the exact sense threshold voltage of the TLC7725IPWR?
The TLC7725IPWR has a fixed negative-going input threshold voltage (VIT–) of 2.25 V, specified from 2.18 V (min) to 2.32 V (max) across 2 V to 6 V supply and –40°C to +85°C operating temperature. This value is factory-trimmed and does not require external resistor programming like the TLC7701.
How is the reset delay time set on the TLC7725IPWR?
The reset delay time (td) of the TLC7725IPWR is set externally using a capacitor 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 - delay is solely capacitor-dependent and validated across full temperature range.
Does the TLC7725IPWR support battery-backed SRAM power-down control?
Yes - the TLC7725IPWR supports battery-backed SRAM power-down control via its CONTROL input. When CONTROL is tied to GND, RESET becomes active-high and can directly drive the chip-select (CS) line of static RAM, automatically disabling memory access during power failure while preserving data via backup battery.
What is the minimum supply voltage at which TLC7725IPWR asserts RESET?
The TLC7725IPWR asserts RESET when VDD reaches 1 V, as defined by its power-up reset voltage (Vres). This ensures reliable reset generation even during slow-ramp or weak-supply conditions - a key differentiator from supervisors requiring ≥2 V to activate.
Is the TLC7725IPWR pin-compatible with other members of the TLC77xx family?
Yes - all TLC77xx devices in the TSSOP-8 (PW) package, including TLC7725IPWR, TLC7703IPWR, and TLC7733IPWR, share identical pinout, footprint, and thermal characteristics. Only the sense threshold voltage differs between variants; no PCB redesign is needed when substituting within the same package option.
TLC7725IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7725IPWR FAQ
1.How can I place an order for TLC7725IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7725IPWR 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 TLC7725IPWR reliable?
The price and inventory of TLC7725IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7725IPWR is usually 5 days.
3.What payment methods are accepted for TLC7725IPWR?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7725IPWR?
TLC7725IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7725IPWR 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 TLC7725IPWR?
For technical support, including TLC7725IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7725IPWR requirements.
6.How does Aetrix verify that TLC7725IPWR is sourced from the original manufacturer or authorized distributors?
All TLC7725IPWR 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 TLC7725IPWR meets industry standards.
7.What is the process for return or replacement of TLC7725IPWR?
All TLC7725IPWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC7725IPWR, 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 TLC7725IPWR part is unused and in its original packaging.
Return procedure for TLC7725IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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