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Texas Instruments TLC7733QPWRQ1
- Part No.:
- TLC7733QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7733QPWRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,735
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Product details
Overview
TLC7733QPWRQ1 from Texas Instruments is an automotive-qualified micropower supply voltage supervisor IC with fixed 2.93 V SENSE threshold, totem-pole RESET/RESET outputs, and programmable delay via external capacitor. It provides power-on reset generation, undervoltage supervision, and static RAM power-down control in microcontroller-based automotive systems.
For engineers reviewing the TLC7733QPWRQ1 datasheet, TLC7733QPWRQ1 pinout, TLC7733QPWRQ1 application, or TLC7733QPWRQ1 equivalent, key selection criteria include its −40°C to 125°C operating range, 16 μA max supply current, 2.93 V precision threshold with 70 mV hysteresis, and TSSOP-8 package compatibility with battery-backed memory retention circuits.
Technical Context
The TLC7733QPWRQ1 implements a precision bandgap-based voltage reference with temperature compensation to maintain stable 2.93 V SENSE threshold across −40°C to 125°C. Its internal timer generates a user-defined reset delay (td = 2.1 × 10⁴ × CT) triggered by SENSE voltage crossing VIT−/VIT+, enabling reliable system initialization after brownout recovery.
It features dual active-high/active-low totem-pole outputs (RESET and RESET), CONTROL input for RAM chip-select coordination during power failure, and RESIN input for manual reset assertion. The device operates from 2 V to 6 V supply and asserts RESET down to VDD ≥ 1 V, supporting low-voltage microcontroller domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| SENSE Threshold Voltage | 2.93 V (typical), fixed internal divider - ensures consistent undervoltage detection at 3.3 V rail without external components |
| Hysteresis | 70 mV - prevents output oscillation near threshold during slow-rising/falling supply conditions |
| Supply Current | 16 μA (max) at VDD ≥ 2 V - enables long-term operation in always-on automotive modules with minimal battery drain |
| Reset Delay Time | Programmable via external CT capacitor (td = 2.1 × 10⁴ × CT) - supports configurable hold times from ~2 ms (100 nF) to seconds |
| Operating Temperature | −40°C to 125°C - qualified per AEC-Q100 for engine control, ADAS, and body electronics applications |
| Output Drive | Totem-pole RESET and RESET - eliminates need for external pull-up resistors, reduces BOM count and layout area |
| Power-On Reset Trigger | Asserts RESET when VDD ≥ 1 V - guarantees early reset assertion before core logic becomes unstable |
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 | RAM power-down enable input | Drives CS of battery-backed SRAM; when tied low, configures RESET as active-high for memory disable during power loss |
| 2 - RESIN | Manual reset input | Active-low asynchronous reset override; pulls RESET low when asserted, independent of SENSE monitoring |
| 3 - CT | Delay timing capacitor connection | External capacitor sets reset timeout duration (td = 2.1 × 10⁴ × CT); open-circuit disables delay |
| 4 - GND | Ground reference | Common return path for all internal circuitry and output drivers; requires low-impedance PCB connection |
| 5 - VDD | Supply voltage input | Accepts 2 V–6 V; powers internal reference, comparator, and totem-pole outputs; functional down to 1 V for reset assertion |
| 6 - SENSE | Supply monitoring input | Monitors monitored rail (e.g., 3.3 V domain); triggers reset when voltage falls below 2.93 V threshold |
| 7 - RESET | Active-low reset output | Totem-pole output; drives low during reset condition; no external pull-up required |
| 8 - RESET | Active-high reset output | Complementary topin 7; provides direct active-high signal for MCU reset inputs requiring high-assertion |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to 125°C) - certified for safety-critical vehicle subsystems including powertrain and chassis control |
| Precision voltage sensing | 2.93 V ±0.075 V threshold with 70 mV hysteresis - eliminates need for external resistor dividers in 3.3 V systems |
| Low-power operation | 16 μA max IDD - extends battery life in always-on telematics and gateway modules |
| RAM power-down support | CONTROL pin logic coordinates automatic SRAM disable during brownout - preserves volatile data using backup battery |
| Robust reset timing | Programmable delay via single external capacitor - enables design-specific reset hold times without firmware dependency |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Monitors 3.3 V microcontroller supply rail during cold cranking, where battery voltage dips below 9 V causing transient rail collapse. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until SENSE recovers above 2.93 V and programmed delay expires - ensuring deterministic MCU reboot after voltage stabilization. Use Value: Prevents corrupted firmware execution during undervoltage events, meeting ISO 26262 ASIL-B diagnostic coverage requirements for reset integrity. | Use Scenario: Powers camera module processor and image sensor interface in forward-facing ADAS camera, requiring fail-safe reset on 5 V and 3.3 V rails. IC Role / Device Role / Timing Role: Dual-output supervisor providing simultaneous active-high and active-low reset signals to separate processor and FPGA domains - eliminating need for external inverters. Use Value: Reduces component count and PCB area while guaranteeing synchronized reset release across heterogeneous processing units. |
| Body Control Module (BCM) | Automotive Gateway |
Use Scenario: Manages power sequencing and brownout response for LIN transceivers and door-lock actuators powered from switched 12 V → 5 V DC/DC converter. IC Role / Device Role / Timing Role: SENSE monitors 5 V rail; CONTROL pin interfaces with microcontroller's bank select signal to disable non-critical peripherals during power loss - preserving CAN bus communication priority. Use Value: Enables selective power-down of secondary functions while maintaining core network connectivity, improving system-level energy efficiency. | Use Scenario: Supervises multi-rail power architecture (12 V, 5 V, 3.3 V) in central gateway unit handling CAN FD, Ethernet, and LIN traffic. IC Role / Device Role / Timing Role: Dedicated TLC7733QPWRQ1 per rail provides independent reset timing and threshold accuracy - avoiding shared-supply coupling errors in complex PDN designs. Use Value: Eliminates cross-rail reset interference, enabling precise fault isolation and faster diagnostics during multi-rail power faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZRQ1 | Fixed 3.3 V threshold, no CONTROL pin, no RESET complement, 1.8 μA quiescent current | Lacks RAM power-down coordination and dual-output capability; suited for simpler reset-only use cases | Select when only basic 3.3 V supervision is needed and ultra-low IQ is critical |
| TPS3839G33DBZRQ1 | 3.3 V threshold, push-pull outputs, 350 nA IQ, no CONTROL pin, no programmable delay | Lower power but no delay tuning or memory control logic; requires external RC for timing if needed | Choose for always-on battery-powered nodes where nanowatt operation outweighs configurability needs |
Compared with TLV809E33DBZRQ1 and TPS3839G33DBZRQ1, the TLC7733QPWRQ1 uniquely integrates programmable delay, dual complementary outputs, and CONTROL-driven RAM disable - making it the only option among the three qualified for coordinated power-fail data retention in automotive static RAM systems.
Availability
TLC7733QPWRQ1 is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC7733QPWRQ1 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 company designing analog, embedded processing, and digital signal processing technologies for industrial, automotive, and consumer markets.
The TLC77-Q1 product line delivers AEC-Q100-qualified voltage supervisors optimized for automotive microcontroller power integrity, featuring precision thresholds, low IQ, and integrated power-down control for battery-backed memory.
FAQ
What is the exact SENSE threshold voltage of the TLC7733QPWRQ1?
The TLC7733QPWRQ1 has a fixed SENSE threshold voltage of 2.93 V (typical), with a guaranteed range of 2.855 V to 3.03 V over −40°C to 125°C. This value is set by an internal resistor divider and does not require external components. The 70 mV hysteresis ensures clean transition behavior during voltage recovery. This specification is confirmed in the Electrical Characteristics table of the SGLS208A datasheet.
Does the TLC7733QPWRQ1 support programmable reset delay, and how is it implemented?
Yes, the TLC7733QPWRQ1 supports programmable reset delay via an external capacitor connected to the CT pin. The delay time is calculated as td = 2.1 × 10⁴ × CT, where CT is in farads and td is in seconds. For example, a 100 nF capacitor yields ~2.1 ms delay. This feature is documented in the Functional Description and Timing Diagram sections of the SGLS208A datasheet and applies specifically to the TLC7733QPWRQ1 variant.
How does the CONTROL pin function in the TLC7733QPWRQ1, and what is its role in RAM power-down?
The CONTROL pin on the TLC7733QPWRQ1 enables coordinated power-down of static RAM during supply failure. When CONTROL is driven low, the RESET output becomes active-high - allowing direct connection to the SRAM's chip select (CS) input. As described in Figure 10 of the SGLS208A datasheet, this configuration automatically disables the memory when VDD drops, preserving data using battery backup. This function is unique to the TLC77xx-Q1 family and confirmed for TLC7733QPWRQ1.
What package type and footprint does the TLC7733QPWRQ1 use, and is it compatible with standard TSSOP-8 assembly processes?
The TLC7733QPWRQ1 uses the TSSOP-8 (PW) package: 3.0 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm max height, with NIPDAU lead finish and MSL Level-1 rating. Its land pattern, stencil design, and tape-and-reel specifications (2000 pcs/reel, 12.4 mm reel width) are fully documented in TI's PW0008A package outline and are compatible with standard SMT assembly lines. This is verified in the Package Option Addendum and PACKAGE OUTLINE sections of the official documentation.
Is the TLC7733QPWRQ1 qualified for automotive applications, and what standards does it meet?
Yes, the TLC7733QPWRQ1 is explicitly qualified for automotive applications per AEC-Q100 Grade 1, with an operating temperature range of −40°C to 125°C. It is listed in TI's "OTHER QUALIFIED VERSIONS OF TLC77-Q1" section as an automotive-grade part and carries the Q1 suffix per TI's ordering nomenclature. Its qualification status, reliability testing, and thermal performance are detailed in the Recommended Operating Conditions and Package Option Addendum of the SGLS208A datasheet.
TLC7733QPWRQ1 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:
- 2.93V
- 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
TLC7733QPWRQ1 FAQ
1.How can I place an order for TLC7733QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7733QPWRQ1 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 TLC7733QPWRQ1 reliable?
The price and inventory of TLC7733QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7733QPWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC7733QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7733QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7733QPWRQ1?
TLC7733QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7733QPWRQ1 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 TLC7733QPWRQ1?
For technical support, including TLC7733QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7733QPWRQ1 requirements.
6.How does Aetrix verify that TLC7733QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC7733QPWRQ1 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 TLC7733QPWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC7733QPWRQ1?
All TLC7733QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7733QPWRQ1, 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 TLC7733QPWRQ1 part is unused and in its original packaging.
Return procedure for TLC7733QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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