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Texas Instruments TPS71728QDRVRQ1
- Part No.:
- TPS71728QDRVRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS71728QDRVRQ1.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,839
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Product details
Overview
TPS71728QDRVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, low-noise, high-PSRR linear regulator delivering 2.8 V at up to 150 mA with 170 mV typical dropout, 30 μVRMS output noise (100 Hz–100 kHz), and 70 dB PSRR at 1 kHz - deployed in camera sensor and microcontroller power rails for ADAS and infotainment systems.
For engineers reviewing the TPS71728QDRVRQ1 datasheet, TPS71728QDRVRQ1 pinout, TPS71728QDRVRQ1 application, or TPS71728QDRVRQ1 equivalent, key selection criteria include ultra-low noise under light load, fixed 2.8 V output with NR pin support, thermal shutdown at 160°C, 45 μA ground current at no load, and compatibility with 1-μF ceramic output capacitance.
Technical Context
The TPS71728QDRVRQ1 uses a PMOS pass device and BiCMOS process to achieve fast startup, low noise, and high PSRR across frequency - with a precision bandgap reference and feedback loop ensuring ±3% worst-case output accuracy over temperature, line, and load. Its quick-start circuit pre-charges the NR capacitor to reduce startup delay while maintaining low noise.
It integrates undervoltage lockout (UVLO) triggering at 2.45 V (150 mV hysteresis), thermal shutdown at 160°C, and foldback current limiting. The enable pin supports TTL/CMOS logic levels and reduces ground current to ≤1.5 μA in shutdown - critical for always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V - eliminates external resistor divider; enables compact layout for space-constrained modules. |
| Max Output Current | 150 mA - sufficient for image sensors, MCU cores, and RF front-end biasing without thermal derating at 125°C ambient. |
| Dropout Voltage | 170 mV typical at 150 mA - allows operation from 3.0 V input when powering 2.8 V loads, preserving battery headroom. |
| PSRR | 70 dB @ 1 kHz, 67 dB @ 100 kHz - suppresses switching noise from DC/DC converters feeding sensitive analog circuits. |
| Output Noise | 30 μVRMS (100 Hz–100 kHz) with CNR = 10 nF - meets stringent spectral purity requirements for PLL/VCO clock supplies. |
| Ground Current | 45 μA typical at no load - extends battery life in always-on vehicle networks (e.g., CAN wake-up receivers). |
| Operating Temp | –40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cockpit electronics. |
Pinout & Package
TPS71728QDRVRQ1 is packaged in a 1.5-mm × 1.5-mm, 6-pin WSON (DSE) package with wettable flanks and exposed thermal pad - optimized for automated optical inspection and high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 2.5 V–6.5 V; requires ≥1 μF ceramic decoupling close to pin for stability and transient response. |
| EN | Enable control input | Active-high TTL/CMOS-compatible; drives regulator ON above 1.2 V, OFF below 0.4 V; draws ≤1 μA. |
| NR | Noise reduction bypass | Connects to 10 nF ceramic capacitor to shunt bandgap reference noise - reduces output noise by >50%. |
| OUT | Regulated output | Delivers stable 2.8 V; requires ≥1 μF ceramic output capacitor (X5R/X7R) for phase margin and load step immunity. |
| GND | Power ground | Low-impedance return path; must be tied directly to thermal pad and system ground plane for thermal and EMI performance. |
| N/C | No-connect terminal | Internally unconnected; may be grounded to improve thermal dissipation but has no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2 kV and CDM ±750 V ESD robustness - suitable for safety-critical vehicle domains. |
| Ultra-low output noise | 30 μVRMS (100 Hz–100 kHz) with NR capacitor - enables clean power for high-resolution image sensors and RF synthesizers. |
| High-bandwidth PSRR | 70 dB at 1 kHz and 45 dB at 1 MHz - rejects ripple from adjacent buck converters without additional filtering stages. |
| Fast startup time | 160 μs to 90% of 2.8 V with CNR = 10 nF - meets automotive module boot-time requirements (<1 ms) for camera and radar subsystems. |
| Thermal and current protection | Integrated thermal shutdown (160°C trip) and foldback current limit - prevents damage during sustained overload or poor heatsinking. |
Applications
| Camera Sensor Power | Microcontroller Core Supply |
|---|---|
Use Scenario: Powers CMOS image sensor analog and digital rails in automotive surround-view cameras. IC Role / Device Role / Timing Role: Low-noise LDO providing stable 2.8 V bias to sensor pixel array and ADC front-end. Use Value: 30 μVRMS noise ensures <1 LSB noise floor in 12-bit image data; 70 dB PSRR isolates sensor from engine-control domain switching noise. |
Use Scenario: Supplies core voltage to automotive-grade ARM Cortex-M7 microcontrollers in body control modules. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean 2.8 V to MCU VDDCORE with fast load transient response. Use Value: 170 mV dropout enables operation from 3.0 V intermediate rail; 150 mA capacity supports burst-mode execution without brownout. |
| ADAS Radar Signal Chain | Infotainment Audio Codec Bias |
Use Scenario: Powers low-noise amplifiers and mixers in 77 GHz radar transceiver signal chains. IC Role / Device Role / Timing Role: Ultra-low-noise LDO supplying 2.8 V to RF front-end ICs requiring minimal phase noise contribution. Use Value: 70 dB PSRR at 100 kHz suppresses DC/DC switching artifacts that degrade radar SNR; NR pin further lowers broadband noise floor. |
Use Scenario: Provides reference voltage and bias to stereo audio codecs in head-unit infotainment systems. IC Role / Device Role / Timing Role: Fixed-output LDO powering codec analog supply (AVDD) and PLL charge pump rails. Use Value: 30 μVRMS noise prevents audible hiss in amplified output; 45 μA quiescent current minimizes standby power draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS71728QDCKRQ1 | SOT-5 (SC70-5) package; 2.0 mm × 1.25 mm footprint; higher RθJA (279°C/W) vs DSE's 190.5°C/W. | Better suited for prototyping or low-power modules where board area is less constrained than thermal budget. | Select TPS71728QDCKRQ1 when manual soldering or legacy SOT placement is required; verify thermal margin at 150 mA load. |
| TLV70728PDPWR | Non-automotive grade; 200 mA max output; 25 μVRMS noise; no NR pin; only 55 dB PSRR at 1 kHz. | Applicable for non-safety-critical consumer or industrial applications where AEC-Q100 is not mandated. | Choose TLV70728PDPWR for cost-sensitive designs outside automotive - but not for ADAS, infotainment, or camera modules requiring Grade 1 qualification. |
Compared with TPS71728QDRVRQ1, the TPS71728QDCKRQ1 offers identical electrical specs in a larger, thermally less efficient package, while the TLV70728PDPWR trades automotive qualification and PSRR performance for lower cost and higher output current - making the TPS71728QDRVRQ1 optimal for noise- and reliability-critical vehicle subsystems.
Availability
TPS71728QDRVRQ1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment audio subsystems, and radar signal chain power delivery requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS71728QDRVRQ1 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 designing analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TPS717-Q1 product line delivers ultra-low-noise, high-PSRR LDOs specifically engineered for automotive-grade power integrity in camera, radar, and infotainment systems operating from –40°C to +125°C.
FAQ
What is the maximum input voltage rating for the TPS71728QDRVRQ1?
The TPS71728QDRVRQ1 has an absolute maximum input voltage of 7 V. Its recommended operating input range is 2.5 V to 6.5 V. Exceeding 7 V risks permanent damage, and operation below 2.5 V may prevent regulation unless the dropout condition (VIN ≥ VOUT + VDO) is met - for TPS71728QDRVRQ1, minimum VIN is 2.97 V at 150 mA load.
Does the TPS71728QDRVRQ1 require an external noise reduction capacitor?
Yes - the TPS71728QDRVRQ1 includes an NR pin specifically for connecting a 10 nF ceramic capacitor to reduce output noise by up to 50%. Without this capacitor, output noise rises to ~95×VOUT μVRMS; with 10 nF, it drops to 12.5×VOUT μVRMS, yielding ~30 μVRMS at 2.8 V - a critical feature for noise-sensitive analog loads.
How does the enable pin (EN) function on the TPS71728QDRVRQ1?
The EN pin on the TPS71728QDRVRQ1 is active-high and TTL/CMOS compatible: driving it above 1.2 V enables regulation, while pulling it below 0.4 V places the device in shutdown mode, reducing ground current to ≤1.5 μA. It draws ≤1 μA when enabled and supports direct connection to IN if always-on operation is required - no external pull-up needed.
What thermal performance can be expected from the TPS71728QDRVRQ1 in its WSON-6 (DSE) package?
In the 1.5-mm × 1.5-mm WSON-6 (DSE) package, the TPS71728QDRVRQ1 has a junction-to-ambient thermal resistance (RθJA) of 190.5°C/W and a junction-to-board resistance (RθJB) of 149.3°C/W. With proper PCB copper pour under the thermal pad, it sustains 150 mA continuous output at +125°C ambient - verified per AEC-Q100 Grade 1 thermal test conditions.
Is the TPS71728QDRVRQ1 pin-compatible with other members of the TPS717-Q1 family?
Yes - all TPS717-Q1 variants in the same package type share identical pinouts. The TPS71728QDRVRQ1 (DSE package) uses the same 6-pin WSON layout as TPS71733QDRVRQ1 and TPS71718QDRVRQ1, enabling drop-in replacement across output voltages without PCB redesign - provided the NR pin is appropriately configured for each fixed-voltage version.
TPS71728QDRVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 70dB ~ 45dB (100Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS71728QDRVRQ1 FAQ
1.How can I place an order for TPS71728QDRVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS71728QDRVRQ1 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 TPS71728QDRVRQ1 reliable?
The price and inventory of TPS71728QDRVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS71728QDRVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS71728QDRVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS71728QDRVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS71728QDRVRQ1?
TPS71728QDRVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS71728QDRVRQ1 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 TPS71728QDRVRQ1?
For technical support, including TPS71728QDRVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS71728QDRVRQ1 requirements.
6.How does Aetrix verify that TPS71728QDRVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS71728QDRVRQ1 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 TPS71728QDRVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS71728QDRVRQ1?
All TPS71728QDRVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS71728QDRVRQ1, 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 TPS71728QDRVRQ1 part is unused and in its original packaging.
Return procedure for TPS71728QDRVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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