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Texas Instruments TPS746115PQWDRBRQ1
- Part No.:
- TPS746115PQWDRBRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS746115PQWDRBRQ1.pdf
- Description:
- AUTOMOTIVE 1-A, LOW-IQ, HIGH-PSR
- Quantity:
- Payment:
- Shipping:
Inventory:2,986
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Product details
Overview
TPS746115PQWDRBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 1A ultra-low-dropout regulator (LDO) with power-good output, fixed 1.15V output, and wettable-flank 6-pin WSON package (2mm × 2mm). It operates from 1.5V to 6.0V input, delivers ±1.5% output accuracy over –40°C to +150°C, achieves 265mV max dropout at 1A (3.3VOUT), and supports fast load transients in automotive head units and radar modules.
For engineers reviewing the TPS746115PQWDRBRQ1 datasheet, TPS746115PQWDRBRQ1 pinout, TPS746115PQWDRBRQ1 application, or TPS746115PQWDRBRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, 25μA typical quiescent current, open-drain or push-pull PG output, stability with ≥1µF ceramic output capacitor, and thermal performance (RθJA = 80.3°C/W) in space-constrained automotive PCBs.
Technical Context
The TPS746115PQWDRBRQ1 implements a precision band-gap reference and error amplifier for high DC accuracy (±0.85% typ at 25°C), with integrated foldback current limiting and thermal shutdown. Its power-good circuit monitors the feedback node to assert PG when VOUT reaches 92% of nominal and deasserts at 90%, providing reliable sequencing control.
It features low-noise regulation (53µVRMS at 1.8VOUT) and high PSRR (38dB at 100kHz), enabled by internal compensation stable with 1µF–220µF output capacitors. The device supports both fixed-output (1.15V) and adjustable configurations, though TPS746115PQWDRBRQ1 is specifically the fixed 1.15V variant in DRV package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.15V ±1.5% over –40°C to +150°C - enables direct powering of 1.2V-core logic with margin |
| Max output current | 1A continuous - sufficient for SoC core rails or multi-sensor subsystems in ADAS ECUs |
| Dropout voltage | 265mV max at 1A (for 3.3VOUT) - ensures regulation down to 1.415V input for 1.15V output |
| Quiescent current | 25μA typical - minimizes standby power in always-on automotive modules |
| PSRR | 38dB at 100kHz - suppresses switching noise from upstream DC/DC converters in infotainment systems |
| Power-good threshold | PG asserts at 92% VOUT, deasserts at 90% - provides clean, hysteresis-protected rail monitoring for MCU reset sequencing |
| Thermal resistance | RθJA = 80.3°C/W (DRV package) - enables 1A operation up to +125°C ambient with minimal copper area |
| Input voltage range | 1.5V to 6.0V - compatible with 3.3V, 5V, and battery-backed automotive supplies |
Pinout & Package
TPS746115PQWDRBRQ1 uses the DRV (6-pin wettable flank WSON) package: 2mm × 2mm body, 0.5mm pitch, exposed thermal pad electrically connected to GND. Wettable flanks enable automated optical inspection (AOI) of solder joints in automotive manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 1.15V to load; requires ≥1µF ceramic capacitor to ground for stability and transient response |
| 2 - FB | Feedback input | Internally tied to 1.15V reference; not accessible on fixed-output variant - unused pin, leave unconnected |
| 3 - GND | Ground reference | Primary return path; thermal pad must be soldered to PCB GND plane for thermal and electrical integrity |
| 4 - EN | Enable control | Active-high logic input; >1.0V enables regulator, <0.3V disables with 1μA shutdown current |
| 5 - PG | Power-good indicator | Open-drain or push-pull output; signals valid output (92% VOUT) - used for system power sequencing |
| 6 - IN | Input supply | Accepts 1.5V–6.0V; requires ≥1µF ceramic capacitor to GND near pin for EMI suppression and transient response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements |
| Ultra-low dropout | 265mV max at 1A enables efficient regulation from low-input sources like buck-boost pre-regulators |
| Active output discharge | Internal FET rapidly discharges output capacitor on shutdown - prevents floating voltages during power-down sequences |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system integration - aids FMEDA and safety analysis |
| Stable with small ceramics | Works with 1µF–220µF X7R/X5R MLCCs - eliminates need for large tantalum or electrolytic capacitors |
| Low thermal resistance | RθJA = 80.3°C/W (DRV) allows 1A operation without heatsink in compact 2mm × 2mm footprint |
Applications
| Automotive Head Units | Front/Rear Cameras |
|---|---|
|
Use Scenario: Powering DSP, image signal processor (ISP), and interface logic in infotainment head units. IC Role / Device Role / Timing Role: Primary post-regulator for 1.2V core logic, providing clean, sequenced 1.15V supply with PG confirmation. Use Value: 25μA quiescent current extends battery life in accessory-mode operation; 38dB PSRR rejects noise from display DC/DC converters. |
Use Scenario: Supplying image sensor analog front-end and MIPI CSI-2 serializer in ADAS camera modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 1.15V to noise-sensitive analog blocks and digital interfaces. Use Value: 53µVRMS output noise prevents image artifacts; wettable flank package ensures AOI-compatible solder joint reliability. |
| Cluster Displays | Medium-Range Radar |
|
Use Scenario: Regulating microcontroller core voltage and display driver ICs in digital instrument clusters. IC Role / Device Role / Timing Role: Fixed-output LDO with PG output enabling safe boot sequencing before display initialization. Use Value: ±1.5% accuracy over temperature ensures consistent MCU timing margins; 1A rating supports burst-mode GPU loads. |
Use Scenario: Powering RF transceiver bias circuits and ADC reference buffers in 77GHz radar transceivers. IC Role / Device Role / Timing Role: Ultra-low-noise, high-PSRR LDO supplying critical analog sections requiring minimal supply-induced phase noise. Use Value: 38dB PSRR at 100kHz suppresses switching artifacts from radar SoC power domains; thermal shutdown protects against antenna fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74612PQWDRBRQ1 | Fixed 1.2V output; identical DRV package, pinout, and specs except VOUT | Used where 1.2V core rail is required instead of 1.15V - no layout change needed | Select when system SoC specifies 1.2V nominal core voltage per JEDEC JESD8-12A |
| TPS7B8733QKVURQ1 | 3.3V fixed output, 350mA rating, lower IQ (18μA), same AEC-Q100 Grade 1, DRB (3mm × 3mm) package | Not a voltage match; suited for auxiliary 3.3V rails, not 1.15V core supplies | Choose only for non-core 3.3V loads where lower current and smaller thermal footprint are acceptable |
Compared with TPS746115PQWDRBRQ1, the 1.2V variant offers direct compatibility for 1.2V-core designs, while the 3.3V TPS7B8733QKVURQ1 serves different rail requirements and cannot replace it in 1.15V applications due to output voltage mismatch and reduced current capability.
Availability
TPS746115PQWDRBRQ1 is available at Aetrix Electronics and suitable for automotive head units, ADAS camera modules, digital cluster displays, and medium-range radar systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS746115PQWDRBRQ1 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-grade power management solutions, with decades of automotive qualification expertise.
The TPS746-Q1 product line delivers ultra-low-dropout, AEC-Q100-qualified LDOs optimized for demanding automotive subsystems including infotainment, ADAS sensors, and digital cockpit electronics.
FAQ
What is the output voltage tolerance of TPS746115PQWDRBRQ1 over temperature?
The TPS746115PQWDRBRQ1 maintains ±1.5% output voltage accuracy across its full operating junction temperature range of –40°C to +150°C. At 25°C, typical accuracy improves to ±0.85%. This tight tolerance ensures reliable operation of 1.2V-core processors and memory interfaces without external trimming or calibration.
Does TPS746115PQWDRBRQ1 require an external feedback resistor network?
No, TPS746115PQWDRBRQ1 is the fixed-output 1.15V variant and does not require external feedback resistors. Pin 2 (FB) is internally connected to the reference and must be left unconnected. Only adjustable versions (e.g., TPS74601) use external R1/R2 dividers.
What package type and dimensions does TPS746115PQWDRBRQ1 use?
TPS746115PQWDRBRQ1 uses the DRV package: a 6-pin wettable flank WSON with 2mm × 2mm body size, 0.5mm pin pitch, and exposed thermal pad. The wettable flanks support automated optical inspection (AOI) of solder joints - critical for automotive manufacturing traceability.
Can TPS746115PQWDRBRQ1 be used with a 1µF output capacitor?
Yes, TPS746115PQWDRBRQ1 is stable with output capacitance as low as 1µF (minimum derated value 0.47µF), using standard X7R or X5R ceramic capacitors. This enables compact, low-BOM-count designs - unlike many older LDOs requiring ≥10µF tantalum or electrolytic capacitors.
What is the power-good (PG) behavior of TPS746115PQWDRBRQ1?
TPS746115PQWDRBRQ1's PG output asserts high (open-drain or push-pull) when VOUT reaches 92% of 1.15V and deasserts at 90%, with 2% hysteresis. PG delay is 135–178µs rising and 1.5–10µs falling - enabling precise sequencing with MCUs and FPGAs in automotive power-up sequences.
TPS746115PQWDRBRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.79V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 36 µA
- Current - Supply (Max):
- -
- PSRR:
- 53dB ~ 30dB (1kHz ~ 1MHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
TPS746115PQWDRBRQ1 FAQ
1.How can I place an order for TPS746115PQWDRBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS746115PQWDRBRQ1 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 TPS746115PQWDRBRQ1 reliable?
The price and inventory of TPS746115PQWDRBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS746115PQWDRBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS746115PQWDRBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS746115PQWDRBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS746115PQWDRBRQ1?
TPS746115PQWDRBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS746115PQWDRBRQ1 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 TPS746115PQWDRBRQ1?
For technical support, including TPS746115PQWDRBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS746115PQWDRBRQ1 requirements.
6.How does Aetrix verify that TPS746115PQWDRBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS746115PQWDRBRQ1 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 TPS746115PQWDRBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS746115PQWDRBRQ1?
All TPS746115PQWDRBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS746115PQWDRBRQ1, 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 TPS746115PQWDRBRQ1 part is unused and in its original packaging.
Return procedure for TPS746115PQWDRBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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