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Texas Instruments TLC7701QPWRQ1
- Part No.:
- TLC7701QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7701QPWRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,969
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Product details
Overview
TLC7701QPWRQ1 from Texas Instruments is an automotive-grade micropower supply voltage supervisor IC with programmable reset delay, precision 1.1 V SENSE threshold (±60 mV), totem-pole RESET/RESET outputs, and 16 μA max supply current at 5 V. It provides power-on reset generation, undervoltage supervision, and static RAM power-down control in engine control units and ADAS domain controllers.
For engineers reviewing the TLC7701QPWRQ1 datasheet, TLC7701QPWRQ1 pinout, TLC7701QPWRQ1 application, or TLC7701QPWRQ1 equivalent, key selection criteria include its adjustable threshold via external resistors, −40°C to 125°C operation, TSSOP-8 package, and dual active-high/active-low reset outputs for fail-safe microcontroller interfacing.
Technical Context
The TLC7701QPWRQ1 implements a precision bandgap-based voltage reference with temperature compensation to maintain ±1.5% threshold stability over −40°C to 125°C. Its internal timer generates a user-defined reset pulse width using an external capacitor (td = 2.1×10⁴ × CT), while dual totem-pole outputs eliminate need for external pull-up resistors.
Unlike fixed-threshold variants (TLC7705-Q1, TLC7733-Q1), the TLC7701QPWRQ1 uses two external resistors (R1 ≈ 750 kΩ, R2 ≈ 450 kΩ) to set SENSE threshold, enabling custom voltage monitoring down to 1.1 V. CONTROL pin enables battery-backed SRAM disable during brownout by asserting RESET when driven low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| SENSE Threshold | 1.1 V (typ), ±60 mV tolerance - enables precise low-voltage monitoring for 1.2 V logic rails or battery-backed circuits |
| Supply Current | 16 μA max at VDD = 5 V - supports always-on automotive modules without compromising battery life |
| Reset Delay Time | Programmable via CT: td = 2.1×10⁴ × CT - allows configurable reset hold time from microseconds to seconds |
| Operating Temp | −40°C to 125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive applications |
| Output Type | Push-pull (totem-pole) RESET and RESET - drives microcontroller reset pins directly without external resistors |
| Power-On Reset | Asserts RESET when VDD ≥ 1 V - ensures reliable initialization even during slow-ramp power-up |
| Hysteresis | 30 mV - prevents chatter during threshold crossing in noisy automotive environments |
Pinout & Package
TSSOP-8 (PW) package, 3.0 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CONTROL | Power-down enable input | Drives RESET active-high when tied to GND; enables SRAM chip-select disable during power loss |
| 2 - RESIN | Manual reset input | Active-low asynchronous reset trigger; overrides automatic supervision when pulled low |
| 3 - CT | Delay timing capacitor connection | External capacitor sets reset pulse width (td = 2.1×10⁴ × CT); no internal timing circuitry |
| 4 - GND | Ground reference | Return path for all internal circuitry and output drivers; must be low-impedance for noise immunity |
| 5 - VDD | Supply voltage input | Operates from 2 V to 6 V; RESET asserts at VDD ≥ 1 V for early power-on detection |
| 6 - SENSE | Monitored voltage input | Compares against 1.1 V internal reference; threshold set by external R1/R2 divider per TLC7701 architecture |
| 7 - RESET | Active-low reset output | Open-drain compatible totem-pole output; sinks 2 mA at 0.5 V for direct MCU /RESET pin drive |
| 8 - RESET | Active-high reset output | Complementary to pin 7; sources −2 mA at 3.7 V for direct interface to processors requiring active-high reset |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable SENSE threshold | Configurable via external R1/R2 (750 kΩ/450 kΩ typical) - supports custom voltage monitoring not possible with fixed-threshold variants |
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to 125°C) - validated for engine control, transmission, and ADAS ECU use |
| Battery backup support | CONTROL pin logic enables automatic SRAM disable during main supply failure - preserves data integrity without external logic |
| Ultra-low quiescent current | 9–16 μA over full temp range - extends battery runtime in always-on telematics and gateway modules |
| No external pull-ups required | Integrated totem-pole outputs - reduces BOM count and PCB area vs. open-drain supervisors |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Monitors 5 V microcontroller supply rail during cold cranking, where battery voltage dips below 6 V. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection with 1.1 V threshold and 30 mV hysteresis. Use Value: Ensures deterministic MCU boot after voltage recovery, preventing corrupted firmware execution during transient dips. | Use Scenario: Supervises 3.3 V vision processor core supply in camera ECU exposed to thermal cycling. IC Role / Device Role / Timing Role: Dual-output supervisor delivering simultaneous active-high and active-low reset signals to SoC and companion ASIC. Use Value: Eliminates need for external inverters or level shifters, reducing layout complexity and signal skew between parallel reset domains. |
| Automotive Gateway Module | Telematics Control Unit (TCU) |
Use Scenario: Manages power sequencing for multi-rail system including CAN transceivers, Ethernet PHY, and MCU. IC Role / Device Role / Timing Role: Central reset coordinator using CONTROL pin to gate SRAM retention during ignition-off transitions. Use Value: Preserves critical diagnostic logs and configuration data in battery-backed SRAM without additional power-switching circuitry. | Use Scenario: Provides always-on reset supervision for LTE modem and GNSS receiver in connected vehicle platforms. IC Role / Device Role / Timing Role: Micropower supervisor operating from backup battery during main power disconnect. Use Value: Maintains modem readiness with <16 μA current draw, enabling fast network reconnection after ignition cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7733QPWRQ1 | Fixed 2.93 V SENSE threshold; no external resistor option; same TSSOP-8 package and pinout | Designed for 3.3 V systems; lacks adjustable threshold capability of TLC7701QPWRQ1 | Select when monitoring standard 3.3 V rails without need for customization |
| TPS3839G33DBVRQ1 | Fixed 3.3 V threshold, 350 nA quiescent current, push-button reset support, different pinout (SOT-23-6) | Ultra-low-power alternative for battery-critical applications; not pin-compatible | Choose for extended battery life in infotainment standby mode, accepting layout change |
Compared with TLC7733QPWRQ1 and TPS3839G33DBVRQ1, the TLC7701QPWRQ1 uniquely supports threshold customization via external resistors while maintaining automotive qualification and dual reset outputs - making it the only option for designs requiring sub-2 V supervision with production-level robustness.
Availability
TLC7701QPWRQ1 is available at Aetrix Electronics and suitable for automotive engine control, ADAS sensor fusion, and telematics gateway applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC7701QPWRQ1 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 automotive electronics, with decades of experience in high-reliability power management and signal chain solutions.
The TLC77-Q1 product line delivers AEC-Q100-qualified voltage supervisors optimized for functional safety-critical automotive subsystems, emphasizing precision threshold accuracy, wide temperature operation, and integrated power-down control for memory retention.
FAQ
What is the SENSE threshold voltage of the TLC7701QPWRQ1?
The TLC7701QPWRQ1 has a nominal SENSE threshold voltage of 1.1 V, with a tolerance of ±60 mV over −40°C to 125°C. Unlike fixed-threshold variants, this value is set by external resistors R1 and R2 (typically 750 kΩ and 450 kΩ), allowing design-specific adjustment. The TLC7701QPWRQ1 datasheet confirms this value under "Electrical Characteristics" with VIT− = 1.04 V (min) to 1.16 V (max) at TA = 25°C.
How is the reset delay time configured on the TLC7701QPWRQ1?
The reset delay time (td) on the TLC7701QPWRQ1 is set by an external capacitor connected to the CT pin, using the formula td = 2.1 × 10⁴ × CT (with CT in farads and td in seconds). For example, a 100 nF capacitor yields ~2.1 ms delay. This timing is independent of supply voltage and temperature, and the TLC7701QPWRQ1 datasheet specifies td = 1.1 ms (min) to 4.2 ms (max) under standard test conditions with CT = 100 nF.
Does the TLC7701QPWRQ1 support battery-backed SRAM power-down control?
Yes, the TLC7701QPWRQ1 supports battery-backed SRAM power-down control via the CONTROL pin. When CONTROL is tied to GND, RESET becomes active-high, enabling direct drive of SRAM chip-select (CS) lines during main supply failure. The TLC7701QPWRQ1 functional block diagram and Figure 10 in the datasheet explicitly show this use case, requiring the device's VDD to be supplied by the backup battery during power loss.
What is the maximum supply current of the TLC7701QPWRQ1?
The maximum supply current (IDD) of the TLC7701QPWRQ1 is 16 μA at VDD = 5 V and TA = 125°C, as specified in the "Electrical Characteristics" table. Typical current is 9 μA under the same conditions. During reset delay (td), IDD(d) rises to 150 μA max due to internal timer activation - a transient increase documented in the datasheet's electrical characteristics section.
Is the TLC7701QPWRQ1 pin-compatible with other TLC77xx-Q1 devices?
Yes, the TLC7701QPWRQ1 is pin-compatible with TLC7705QPWRQ1 and TLC7733QPWRQ1 in the TSSOP-8 (PW) package, sharing identical pinout, footprint, and function mapping. However, threshold configuration differs: TLC7701QPWRQ1 uses external resistors, while TLC7705QPWRQ1 and TLC7733QPWRQ1 have fixed internal dividers. This compatibility allows drop-in replacement for threshold tuning, provided external R1/R2 are added per TLC7701QPWRQ1 requirements.
TLC7701QPWRQ1 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:
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7701QPWRQ1 FAQ
1.How can I place an order for TLC7701QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7701QPWRQ1 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 TLC7701QPWRQ1 reliable?
The price and inventory of TLC7701QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7701QPWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC7701QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7701QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7701QPWRQ1?
TLC7701QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7701QPWRQ1 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 TLC7701QPWRQ1?
For technical support, including TLC7701QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7701QPWRQ1 requirements.
6.How does Aetrix verify that TLC7701QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC7701QPWRQ1 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 TLC7701QPWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC7701QPWRQ1?
All TLC7701QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7701QPWRQ1, 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 TLC7701QPWRQ1 part is unused and in its original packaging.
Return procedure for TLC7701QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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