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Texas Instruments TPS7A6350QPWPRQ1
- Part No.:
- TPS7A6350QPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS7A6350QPWPRQ1.pdf
- Description:
- IC REG LINEAR 5V 200MA 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TPS7A6350QPWPRQ1 from Texas Instruments is an automotive-grade 5-V, 300-mA linear regulator with integrated window watchdog timer and programmable power-on reset delay. It delivers regulated output under input voltages up to 40 V, features ±2% output voltage accuracy, 35-µA quiescent current, and operates across –40°C to +125°C. It serves as a safety-critical power supply and fault-monitoring IC for automotive microcontrollers.
For engineers reviewing the TPS7A6350QPWPRQ1 datasheet, TPS7A6350QPWPRQ1 pinout, TPS7A6350QPWPRQ1 application, or TPS7A6350QPWPRQ1 equivalent, key selection considerations include its watchdog fault response behavior, RESET pulse width programmability via DELAY pin capacitor, EN/WD_FLT retriggering logic, and AEC-Q100 Grade 1 qualification for automotive power domains.
Technical Context
The TPS7A6350QPWPRQ1 integrates a window watchdog with ROSC-pin-programmable period (e.g., 20 ms with 20-kΩ) and generates a short WD_FLT pulse (t(WD)/5000 ≈ 4 µs) upon fault detection. Its RESET pin supports two distinct behaviors: voltage-drop-initiated reset (VOUT < 90%) and long-duration fault-triggered reset (programmable via DELAY pin capacitor).
When configured with EN tied to WD_FLT and WD floating, a watchdog fault disables the LDO, initiating capacitor charging at the DELAY pin; RESET remains low until DELAY reaches 3 V, yielding a user-adjustable reset pulse equal to the power-on reset delay (e.g., 100 ms with 33-nF). This decouples fault response timing from watchdog period constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - Stable rail for MCU core/I/O domains requiring tight regulation tolerance. |
| Max Input Voltage | 40 V - Supports direct connection to automotive battery (12 V/24 V systems with load dump margin). |
| Output Current | 300 mA - Sufficient for low-power automotive MCUs and peripheral logic without external boost. |
| Quiescent Current | 35 µA - Enables always-on operation in vehicle sleep modes while meeting ISO 16750-2 quiescent draw limits. |
| Operating Temp | –40°C to +125°C - Qualified per AEC-Q100 Grade 1 for under-hood and ECU module deployment. |
| Watchdog Period | Programmable 1.5 ms to 400 ms via ROSC resistor - Configurable window timing for diverse MCU watchdog requirements. |
| RESET Pulse Width | Programmable 10 ms to 5 s via DELAY capacitor - Enables reliable edge-detection reset on MCUs requiring >10-ms minimum pulse width. |
Pinout & Package
TPS7A6350QPWPRQ1 is housed in a 16-pin HTSSOP (PW) package with exposed thermal pad, optimized for automotive PCB layouts requiring thermal reliability and space efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 3.3 V to 40 V; internal protection includes overvoltage clamp and reverse-battery tolerance. |
| VOUT | Regulated Output | 5-V output with fast transient response; supports 300-mA load with <1% line/load regulation deviation. |
| GND | Power Ground | Low-impedance return path shared by analog and power sections; connects to thermal pad for heat dissipation. |
| EN | Enable Control | Active-high input; used to synchronize LDO enable with WD_FLT for long-reset configuration. |
| WD_EN | Watchdog Enable | Active-low input; grounding enables window watchdog function; open or high disables watchdog monitoring. |
| WD | Watchdog Clock Input | Accepts external clock signal; absence or frequency violation triggers WD_FLT assertion. |
| WD_FLT | Watchdog Fault Output | Open-drain active-low signal pulsed for t(WD)/5000 on fault; used to drive EN or MCU interrupt. |
| RESET | Reset Output | Open-drain active-low output asserted during undervoltage or programmable long-fault reset. |
| DELAY | Reset Delay Timing | Connects to external capacitor to set power-on and fault-triggered RESET pulse width (td = 100×CDELAY). |
| ROSC | Watchdog Timing | Connects to external resistor to set window watchdog period (tWD = 10−6 × RROSC). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Window Watchdog | Monitors external clock integrity with adjustable window period; prevents runaway software without CPU dependency. |
| Programmable Long RESET Pulse | Generates fault-triggered RESET pulses matching power-on delay (10 ms–5 s), eliminating need for external RC timers. |
| AEC-Q100 Qualified | Grade 1 (–40°C to +125°C) with PPAP-ready documentation-meets functional safety requirements for ASIL-B systems. |
| Reverse-Battery Protection | Withstands –40 V input without damage-enables robust deployment in 12 V automotive electrical architectures. |
| Low Quiescent Current | 35 µA typical in enabled state-supports always-on ECUs compliant with ISO 16750-2 Class D current limits. |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance System (ADAS) Camera ECU |
|---|---|
|
Use Scenario: Powering a low-power ARM Cortex-M7 MCU and CAN transceiver in a vehicle body control unit with wake-on-LIN capability. IC Role / Device Role / Timing Role: Primary 5-V power source and independent watchdog supervisor; monitors MCU clock via WD pin and asserts RESET on detected firmware hang. Use Value: Ensures deterministic recovery from lockup events using programmable 100-ms RESET pulse, avoiding spurious resets caused by sub-millisecond WD_FLT glitches. |
Use Scenario: Supplying vision processor and image sensor interface in a surround-view camera module operating near engine compartment temperatures. IC Role / Device Role / Timing Role: Regulated 5-V rail generator with thermal-aware fault response; DELAY pin capacitor sets 50-ms RESET pulse compatible with image pipeline initialization timing. Use Value: Maintains system-level functional safety by guaranteeing MCU reset completion before sensor data acquisition begins, even under transient voltage faults. |
| Electric Power Steering (EPS) Sensor Interface | Automotive Gateway Controller |
|
Use Scenario: Powering Hall-effect position sensors and SPI interface IC in an EPS motor control assembly subject to high EMI and vibration. IC Role / Device Role / Timing Role: Fault-tolerant LDO with window watchdog; WD_EN grounded to enable continuous monitoring of MCU SPI clock integrity. Use Value: Detects clock corruption induced by EMI and triggers long RESET pulse (set via 22-nF DELAY cap) that meets ASIL-B reset timing requirements per ISO 26262. |
Use Scenario: Providing stable 5-V supply and reset coordination for a multi-protocol gateway MCU managing CAN FD, LIN, and Ethernet AVB traffic. IC Role / Device Role / Timing Role: Centralized power and watchdog management unit; ROSC resistor configures 15-ms watchdog window aligned with gateway heartbeat protocol. Use Value: Enables synchronized reset propagation across subsystems using configurable RESET pulse width, reducing boot sequence jitter in time-sensitive network stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO-with-watchdog applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B6750QPWPRQ1 | Fixed 5-V output, no DELAY pin; RESET pulse width fixed at 200 ms; lacks programmable watchdog window (uses internal oscillator). | Suitable for simpler watchdog use cases where long reset is required but timing flexibility is unnecessary. | Select when design prioritizes BOM simplification over fine-grained fault-response tuning. |
| TLV70750PDPWR | 5-V LDO only-no watchdog, no RESET, no DELAY/ROSC pins; 200-mA output; 25-µA IQ. | Applicable only for basic power regulation where external supervision circuitry handles reset/watchdog functions. | Choose only if watchdog functionality is implemented separately and board space is constrained. |
Compared with TPS7A6350QPWPRQ1, TPS7B6750QPWPRQ1 offers fixed long-reset behavior but sacrifices watchdog period adjustability, while TLV70750PDPWR removes all supervision features-making TPS7A6350QPWPRQ1 uniquely suited for ASIL-B-compliant designs requiring both precise watchdog timing and user-defined reset duration.
Availability
TPS7A6350QPWPRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS sensor modules, and electric power steering systems requiring stable component supply, AEC-Q100 compliance, and functional safety support.
Supply support for TPS7A6350QPWPRQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TPS7A63xx-Q1 product line was designed specifically for automotive microcontroller power management with integrated functional safety features-including window watchdog, programmable reset delay, and AEC-Q100 Grade 1 qualification.
FAQ
What is the maximum input voltage supported by the TPS7A6350QPWPRQ1?
TPS7A6350QPWPRQ1 supports a maximum input voltage of 40 V, enabling direct connection to automotive battery rails including transient conditions such as load dump (per ISO 7637-2 Pulse 5a). This rating ensures reliable operation in 12 V and 24 V vehicle architectures without external protection circuitry.
How is the watchdog period configured on the TPS7A6350QPWPRQ1?
The watchdog period of the TPS7A6350QPWPRQ1 is set by an external resistor connected to the ROSC pin, with tWD = 10−6 × RROSC. For example, a 20-kΩ resistor yields a 20-ms window period. The device supports programmable periods from 1.5 ms to 400 ms, allowing alignment with specific MCU watchdog timeout requirements.
Can the TPS7A6350QPWPRQ1 generate a long RESET pulse without modifying the watchdog period?
Yes-the TPS7A6350QPWPRQ1 can generate a long RESET pulse (e.g., 100 ms) independent of watchdog period by connecting the EN pin to WD_FLT and leaving WD floating. In this configuration, a watchdog fault disables the LDO, initiating DELAY pin capacitor charging; RESET stays low until DELAY reaches 3 V, producing a pulse equal to the power-on reset delay.
What is the purpose of the DELAY pin on the TPS7A6350QPWPRQ1?
The DELAY pin on the TPS7A6350QPWPRQ1 sets the power-on reset delay and long fault-triggered RESET pulse width via an external capacitor. The delay time is calculated as td = 100 × CDELAY, supporting values from 10 ms (100 nF) to 5 s (50 µF), enabling precise synchronization with MCU reset timing requirements.
Is the TPS7A6350QPWPRQ1 qualified for automotive applications?
Yes-TPS7A6350QPWPRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C), manufactured in IATF 16949-certified facilities, and designed to meet functional safety requirements for ASIL-B systems. It includes reverse-battery protection, thermal shutdown, and short-circuit current limiting for automotive ECU deployments.
TPS7A6350QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 30dB (100Hz ~ 150kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO), Watchdog
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS7A6350QPWPRQ1 FAQ
1.How can I place an order for TPS7A6350QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A6350QPWPRQ1 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 TPS7A6350QPWPRQ1 reliable?
The price and inventory of TPS7A6350QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A6350QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS7A6350QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A6350QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A6350QPWPRQ1?
TPS7A6350QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A6350QPWPRQ1 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 TPS7A6350QPWPRQ1?
For technical support, including TPS7A6350QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A6350QPWPRQ1 requirements.
6.How does Aetrix verify that TPS7A6350QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS7A6350QPWPRQ1 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 TPS7A6350QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS7A6350QPWPRQ1?
All TPS7A6350QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A6350QPWPRQ1, 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 TPS7A6350QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS7A6350QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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