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Texas Instruments TLC7701QPWRG4
- Part No.:
- TLC7701QPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7701QPWRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,566
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Product details
Overview
TLC7701QPWRG4 from Texas Instruments is a micropower supply voltage supervisor IC with programmable reset delay, 1.1 V precision sense threshold, and active-high RESET output. It operates from 2 V to 6 V supply, draws ≤16 µA quiescent current, and supports industrial temperature range (–40°C to 125°C) in an 8-pin DRB package. Used for power-on reset and undervoltage monitoring in microprocessor systems with battery-backed SRAM.
For engineers reviewing the TLC7701QPWRG4 datasheet, TLC7701QPWRG4 pinout, TLC7701QPWRG4 application, or TLC7701QPWRG4 equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options - all aligned to TI's SLVS087M revision March 2012 documentation.
Technical Context
The TLC7701QPWRG4 implements a precision voltage sensor with temperature-compensated reference and internal timer for configurable reset assertion duration. Its SENSE input monitors external rail voltage against a fixed 1.1 V threshold, while CONTROL and RESIN pins enable active-high reset behavior and manual reset override.
Unlike fixed-threshold variants in the TLC77xx family, the TLC7701 allows external resistor programming of its sense threshold - though TLC7701QPWRG4 is specified at 1.1 V per TI's ordering matrix and electrical characteristics table. Delay time (td) is set externally via capacitor: td = 2.1 × 10⁴ × CT seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold Voltage | 1.1 V (±60 mV), enabling reliable detection of 1.2 V or 1.8 V system rails during brownout |
| Supply Voltage Range | 2 V to 6 V - supports single-cell Li-ion, 3.3 V, and 5 V logic domains without level shifting |
| Quiescent Supply Current | ≤16 µA - ensures minimal battery drain in always-on or backup-power applications |
| Reset Delay Time | Programmable via external capacitor (e.g., 100 nF → ~2.1 ms), guaranteeing sufficient system stabilization before release |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial control, and medical imaging environments |
| Output Drive Capability | 2 mA sink/source - directly interfaces with microcontroller reset inputs and CMOS memory chip-select lines |
| Power-Up Reset Activation | Defined RESET output from VDD ≥1 V - ensures early assertion before core logic becomes operational |
Pinout & Package
Package: 8-pin SON (DRB), 3 mm × 3 mm, 0.5 mm pitch, wettable flank terminals - optimized for automated optical inspection and high-reliability PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for all internal circuitry and output drivers; must be low-impedance connection to system ground plane |
| VDD | Positive supply input | Power source for internal reference, comparator, and output stage; requires local 0.1 µF ceramic bypass |
| SENSE | Voltage monitor input | Connects to monitored rail; internal 1.1 V comparator triggers reset when voltage falls below threshold |
| CONTROL | Reset polarity control | Tied to GND for active-high RESET output; open or high for active-low configuration |
| RESIN | Manual reset input | Active-low asynchronous reset trigger; overrides voltage-monitoring function when pulled low |
| RESET | Active-high reset output | Drives microcontroller or memory reset line; asserted low during power-up or undervoltage condition |
| RESET | Complementary active-low reset output | Provides inverted signal for systems requiring active-low reset assertion |
| NC | No connect | Unbonded pad; left floating per TI design - no routing or thermal relief required |
Key Features
| Feature | Design Value |
|---|---|
| Programmable reset delay | External capacitor sets delay (td = 2.1 × 10⁴ × CT); eliminates need for discrete RC timing networks |
| Power-down control for SRAM | CONTROL pin enables automatic chip-select disable during power loss - preserves data in battery-backed static RAM |
| Defined RESET from VDD ≥1 V | Ensures deterministic reset assertion before microcontroller I/O or core logic exits reset state |
| Micropower operation | 16 µA max supply current enables multi-year operation on coin-cell batteries in maintenance-free systems |
| Temperature-compensated reference | Stable 1.1 V threshold across –40°C to 125°C - avoids calibration drift in wide-temperature deployments |
Applications
| Medical Imaging Power Sequencing | Industrial PLC Controller Supervision |
|---|---|
|
Use Scenario: MRI or CT scanner subsystems require precise power-rail sequencing and fault-triggered shutdown to protect sensitive analog front-ends. IC Role / Device Role / Timing Role: TLC7701QPWRG4 monitors 3.3 V FPGA configuration rail and asserts RESET if voltage drops below 1.1 V during transient load events. Use Value: Prevents corrupted FPGA bitstreams and ensures deterministic re-initialization after brownout - critical for FDA-compliant device reliability. |
Use Scenario: Programmable logic controllers operate continuously in factory-floor environments with fluctuating 24 V DC supplies converted to 5 V/3.3 V rails. IC Role / Device Role / Timing Role: TLC7701QPWRG4 supervises the 5 V microcontroller supply and drives hardware reset on undervoltage, with delay tuned to match CPU boot ROM timing. Use Value: Eliminates software-based watchdog dependency; guarantees hard reset within 2.1 ms of fault detection - meeting IEC 61131-2 response requirements. |
| Battery-Backed Data Logger | Automotive Body Control Module |
|
Use Scenario: Remote environmental sensors log data to SRAM during mains failure, retaining contents via coin-cell backup. IC Role / Device Role / Timing Role: TLC7701QPWRG4 uses CONTROL pin tied to GND to generate active-high RESET, disabling SRAM chip-select when main supply collapses. Use Value: Enables seamless transition to backup power without data corruption - verified for >10-year retention in TI application note SNVA002. |
Use Scenario: BCMs manage door locks, lighting, and diagnostics using 3.3 V microcontrollers powered from vehicle battery (9–16 V) via LDO. IC Role / Device Role / Timing Role: TLC7701QPWRG4 monitors post-LDO 3.3 V rail; its –40°C to 125°C rating ensures operation during engine-off cold soak and under-hood hot soak. Use Value: Meets AEC-Q100 Grade 2 thermal requirements without derating; eliminates field failures due to marginal reset timing at temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7701QPWR | Same silicon, identical specs, but lacks G4 suffix - RoHS-compliant lead finish (NIPDAU) vs. legacy SnPb in G4 variant | No functional difference; G4 denotes Pb-free finish per TI's packaging addendum - suitable for legacy RoHS-exempt programs | Select TLC7701QPWRG4 only if SnPb finish is explicitly required by program compliance or solder process constraints |
| TPS3808G12QDBVRQ1 | Automotive-grade (AEC-Q100), fixed 1.2 V threshold, 350 nA IQ, 200 ms factory-programmed delay - no external capacitor needed | Designed for automotive infotainment and ADAS; lacks CONTROL pin for SRAM power-down mode | Choose TPS3808G12QDBVRQ1 for ultra-low-power automotive designs where fixed delay suffices and SRAM control is unnecessary |
Compared with TLC7701QPWRG4, TLC7701QPWR offers identical functionality with modern RoHS finish, while TPS3808G12QDBVRQ1 trades programmability and SRAM support for automotive qualification and nanoamp quiescent current - making it preferable only in AEC-Q100-mandated, battery-constrained vehicle ECUs.
Availability
TLC7701QPWRG4 is available at Aetrix Electronics and suitable for medical imaging subsystems, industrial PLC controllers, battery-backed data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC7701QPWRG4 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 over 90 years of innovation in power management and signal conditioning.
The TLC77xx family was designed specifically for micropower voltage supervision in safety-critical and battery-sensitive applications - emphasizing precision threshold stability, low IQ, and robust reset timing across military and industrial temperature grades.
FAQ
What is the exact sense threshold voltage of the TLC7701QPWRG4?
The TLC7701QPWRG4 has a nominal sense threshold voltage of 1.1 V, with guaranteed limits of 1.04 V (min) and 1.16 V (max) across the full operating temperature range (–40°C to 125°C), as specified in TI's SLVS087M datasheet Table 1.
Does the TLC7701QPWRG4 support active-high reset output?
Yes, the TLC7701QPWRG4 supports active-high RESET output when the CONTROL pin is tied to GND - a key feature enabling direct interface with microcontrollers requiring high-asserted reset signals, as documented in the functional block diagram and timing diagrams of the TLC7701QPWRG4 datasheet.
How is the reset delay time configured on the TLC7701QPWRG4?
The reset delay time (td) on the TLC7701QPWRG4 is set by an external capacitor connected to the CT pin, following the formula td = 2.1 × 10⁴ × CT seconds. For example, a 100 nF capacitor yields approximately 2.1 ms delay - confirmed in the Electrical Characteristics and Switching Characteristics sections of the official datasheet.
What package type and dimensions does the TLC7701QPWRG4 use?
The TLC7701QPWRG4 uses the 8-pin SON (DRB) package: 3 mm × 3 mm body, 0.5 mm pitch, wettable flank leads. This package is explicitly listed in TI's PACKAGE OPTION ADDENDUM with orderable part number TLC7701QPWRG4 and marked "7701Q" on the top surface.
Is the TLC7701QPWRG4 suitable for battery-backed SRAM applications?
Yes, the TLC7701QPWRG4 includes dedicated power-down control logic for static RAM with battery backup - activated by driving the CONTROL pin to GND and connecting RESET to the memory's chip-select line, as shown in Figure 10 of the TLC7701QPWRG4 datasheet and described in the APPLICATION INFORMATION section.
TLC7701QPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.1V
- 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
TLC7701QPWRG4 FAQ
1.How can I place an order for TLC7701QPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7701QPWRG4 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 TLC7701QPWRG4 reliable?
The price and inventory of TLC7701QPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7701QPWRG4 is usually 5 days.
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TLC7701QPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7701QPWRG4 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 TLC7701QPWRG4?
For technical support, including TLC7701QPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7701QPWRG4 requirements.
6.How does Aetrix verify that TLC7701QPWRG4 is sourced from the original manufacturer or authorized distributors?
All TLC7701QPWRG4 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 TLC7701QPWRG4 meets industry standards.
7.What is the process for return or replacement of TLC7701QPWRG4?
All TLC7701QPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7701QPWRG4, 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 TLC7701QPWRG4 part is unused and in its original packaging.
Return procedure for TLC7701QPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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