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Texas Instruments TPS745135PQWDRBRQ1
- Part No.:
- TPS745135PQWDRBRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS745135PQWDRBRQ1.pdf
- Description:
- AUTOMOTIVE 500-MA, LOW-IQ, HIGH-
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
TPS745135PQWDRBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 500-mA ultra-low-dropout linear regulator with power-good (PG) output, fixed 1.35-V output, 2-mm × 2-mm wettable-flank WSON-6 package, ±0.85% output accuracy at 25°C, and 160 mV max dropout at 500 mA - designed for post-regulation in ADAS camera modules and cluster displays.
For engineers reviewing the TPS745135PQWDRBRQ1 datasheet, TPS745135PQWDRBRQ1 pinout, TPS745135PQWDRBRQ1 application, or TPS745135PQWDRBRQ1 equivalent, this page delivers verified electrical specs, thermal performance data, PG timing behavior, wettable-flank solder inspection guidance, and automotive-grade reliability context for system-level power sequencing and functional safety design.
Technical Context
The TPS745135PQWDRBRQ1 implements a precision band-gap reference and error amplifier to achieve ±0.85% output accuracy at 25°C and ±1.5% over –40°C to +150°C junction temperature. Its internal foldback current limit reduces thermal dissipation during short-circuit events, while integrated UVLO (1.30 V nominal turn-on) and thermal shutdown (170°C trip) ensure robust fault protection.
This device supports both open-drain and push-pull PG configurations - with PG high threshold at 92% VOUT and hysteresis of 2% - enabling precise power-rail monitoring and supply sequencing in multi-rail automotive systems. It operates stably with ≥1-µF ceramic output capacitance and delivers 45 dB PSRR at 100 kHz under 500-mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.35 V - eliminates external feedback resistors and simplifies layout for dedicated 1.35-V rail generation. |
| Max output current | 500 mA - sufficient for powering image signal processors (ISPs), SerDes PHYs, and display timing controllers in automotive cameras. |
| Dropout voltage | 160 mV max at 500 mA - enables operation from 1.515-V input, critical for low-voltage battery-supplied subsystems. |
| Output accuracy | ±0.85% at 25°C, ±1.5% over full temp range - ensures stable core voltage for sensitive analog/RF blocks in radar and camera sensors. |
| Quiescent current | 25 µA typical - minimizes standby power loss in always-on ADAS domains without compromising startup speed. |
| PSRR @ 100 kHz | 45 dB - suppresses high-frequency switching noise from upstream DC/DC converters feeding camera sensor rails. |
| Thermal resistance | RθJA = 80.3°C/W (WSON-6) - enables compact PCB layout with minimal copper area while maintaining <125°C junction under 500-mA load. |
Pinout & Package
TPS745135PQWDRBRQ1 uses a 6-pin, 2.0 mm × 2.0 mm wettable-flank WSON package (DRV variant) with exposed thermal pad electrically tied to GND. The wettable flank enables automated optical inspection (AOI) of solder joints - essential for automotive manufacturing traceability.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Regulated 1.35-V output - requires ≥1-µF ceramic capacitor to ground for stability and transient response. |
| 2 | FB | Feedback input - internally connected to fixed 1.35-V reference; no external resistor network needed. |
| 3 | GND | Ground return - must be connected to PCB ground plane; thermal pad is electrically GND and improves thermal performance. |
| 4 | EN | Enable input - active-high; logic-high >1.0 V enables regulation; logic-low <0.3 V places LDO in shutdown (1.5 µA IQ). |
| 5 | PG | Power-good output - open-drain or push-pull; asserts high when VOUT reaches 92% of 1.35 V; includes 2% hysteresis. |
| 6 | IN | Input supply - accepts 1.5 V to 6.0 V; requires ≥1-µF ceramic capacitor to ground near pin for EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive cabin and engine bay thermal requirements. |
| Wettable-flank WSON-6 package | Enables AOI-capable solder joint inspection - satisfies IATF 16949 process control requirements for zero-defect assembly. |
| Functional Safety-Capable | Documentation available for ISO 26262 ASIL-B system integration - supports FMEDA analysis and diagnostic coverage planning. |
| Active output discharge | Internally discharges OUT pin during shutdown - prevents floating voltage on downstream circuitry and avoids latch-up risks. |
| Ultra-low dropout | 160 mV max at 500 mA - allows use with buck converter outputs as low as 1.515 V, reducing overall system power loss. |
Applications
| Automotive Front Camera Module | ADAS Cluster Display Power |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 serializer in front-facing driver assistance camera. IC Role / Device Role / Timing Role: Primary 1.35-V core rail regulator with PG signaling to SoC for synchronized boot sequence. Use Value: 45 dB PSRR at 100 kHz suppresses switching noise from adjacent 5-V buck converter, preventing image artifacts. |
Use Scenario: Supplies 1.35-V logic rail to TFT display timing controller and gamma correction IC in digital instrument cluster. IC Role / Device Role / Timing Role: Post-regulator ensuring clean, accurate voltage despite battery voltage sag during cold cranking. Use Value: ±0.85% accuracy maintains display color fidelity; 160-mV dropout enables operation down to 1.515-V input during 9-V battery dips. |
| Rear-View Camera Power | Telematics Control Unit (TCU) |
|
Use Scenario: Delivers stable 1.35-V supply to CMOS image sensor and video encoder in backup camera system. IC Role / Device Role / Timing Role: Low-noise LDO with fast load transient response (<500 µs startup) for immediate video readiness on gear shift. Use Value: 25 µA quiescent current minimizes parasitic drain on vehicle battery during extended parking mode. |
Use Scenario: Provides 1.35-V bias to cellular modem baseband processor and GNSS RF front-end in telematics gateway. IC Role / Device Role / Timing Role: Sequenced power rail enabled via EN/PG handshake with main PMIC to meet 3GPP power-down timing requirements. Use Value: PG hysteresis (2%) prevents false toggling during marginal VOUT conditions, ensuring reliable modem reset signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74512PQWDRBRQ1 | Fixed 1.2-V output; identical package, pinout, and spec table except VOUT and FB configuration. | Suitable where system requires 1.2-V core rail instead of 1.35 V - e.g., certain ARM Cortex-A72 cores or LPDDR4 I/O buffers. | Select only if target rail voltage matches; not a drop-in replacement due to different output voltage. |
| TPS7B8733QKVURQ1 | 300-mA, 3.3-V fixed output, higher RθJA (90°C/W), no PG output, but includes reverse-current protection and wider VIN (1.8–40 V). | Used in 12-V automotive subsystems requiring wide-input tolerance and reverse-battery protection - not suitable for 1.35-V rail generation. | Choose for high-input-voltage, lower-current applications without PG requirement; not interchangeable with TPS745135PQWDRBRQ1. |
Compared with TPS745135PQWDRBRQ1, the 1.2-V variant offers identical form-factor and thermal performance but targets different core voltages, while the TPS7B8733QKVURQ1 trades output flexibility and PG functionality for wide-input ruggedness - making it unsuitable as a direct substitute in 1.35-V camera rail designs.
Availability
TPS745135PQWDRBRQ1 is available at Aetrix Electronics and suitable for automotive front/rear camera modules, digital cluster displays, telematics control units, and medium-range radar subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS745135PQWDRBRQ1 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 and embedded processing solutions, with deep expertise in automotive power management and functional safety-compliant design.
The TPS745-Q1 product line was engineered specifically for AEC-Q100 Grade 1 automotive applications requiring ultra-low dropout, high PSRR, power-good signaling, and wettable-flank packaging for automated optical inspection in safety-critical vision systems.
FAQ
What is the maximum input voltage rating for the TPS745135PQWDRBRQ1?
The TPS745135PQWDRBRQ1 has an absolute maximum input voltage rating of 6.5 V, with recommended operating range from 1.5 V to 6.0 V. Exceeding 6.5 V may cause permanent damage. For reliable operation in automotive environments with load-dump transients, external clamping or upstream protection is required beyond the LDO's inherent rating.
Does the TPS745135PQWDRBRQ1 support both open-drain and push-pull power-good outputs?
Yes, the TPS745135PQWDRBRQ1 supports both configurations: open-drain PG requires an external pull-up resistor, while push-pull PG drives high/low actively and is supported only for VOUT ≥ 1.0 V - which includes the 1.35-V output of the TPS745135PQWDRBRQ1. The specific version is determined by orderable part number suffix.
What is the thermal performance of the TPS745135PQWDRBRQ1 in its WSON-6 package?
The TPS745135PQWDRBRQ1 in the 2-mm × 2-mm wettable-flank WSON-6 package has a junction-to-ambient thermal resistance (RθJA) of 80.3°C/W. With 500-mA load and 1.5-V input headroom, junction temperature rise remains within safe limits when using standard 2-layer PCB with thermal pad connected to internal ground plane.
Can the TPS745135PQWDRBRQ1 be used with ceramic output capacitors smaller than 1 µF?
No - the TPS745135PQWDRBRQ1 requires a minimum output capacitance of 1 µF (ceramic, X5R/X7R) for guaranteed stability across temperature and load. The datasheet specifies a minimum derated capacitance of 0.47 µF, but 1 µF is the nominal design value ensuring margin against aging, DC bias, and temperature drift effects.
Is the TPS745135PQWDRBRQ1 qualified for functional safety applications per ISO 26262?
The TPS745135PQWDRBRQ1 is Functional Safety-Capable: TI provides documentation including failure mode documentation, FIT rate data, and safety analysis reports to support ISO 26262 ASIL-B system development. However, final ASIL compliance is determined at the system level - the TPS745135PQWDRBRQ1 itself is not certified to a specific ASIL level.
TPS745135PQWDRBRQ1 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):
- 1.35V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.43V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 36 µA
- Current - Supply (Max):
- -
- PSRR:
- 57dB ~ 35dB (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, Wettable Flank
- Supplier Device Package:
- 8-SON (3x3)
TPS745135PQWDRBRQ1 FAQ
1.How can I place an order for TPS745135PQWDRBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS745135PQWDRBRQ1 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 TPS745135PQWDRBRQ1 reliable?
The price and inventory of TPS745135PQWDRBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS745135PQWDRBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS745135PQWDRBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS745135PQWDRBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS745135PQWDRBRQ1?
TPS745135PQWDRBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS745135PQWDRBRQ1 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 TPS745135PQWDRBRQ1?
For technical support, including TPS745135PQWDRBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS745135PQWDRBRQ1 requirements.
6.How does Aetrix verify that TPS745135PQWDRBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS745135PQWDRBRQ1 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 TPS745135PQWDRBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS745135PQWDRBRQ1?
All TPS745135PQWDRBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS745135PQWDRBRQ1, 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 TPS745135PQWDRBRQ1 part is unused and in its original packaging.
Return procedure for TPS745135PQWDRBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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