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Texas Instruments TPS785075QWDRBRQ1
- Part No.:
- TPS785075QWDRBRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS785075QWDRBRQ1.pdf
- Description:
- AUTOMOTIVE, 1-A, HIGH-ACCURACY,
- Quantity:
- Payment:
- Shipping:
Inventory:4,935
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Product details
Overview
TPS785075QWDRBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LDO voltage regulator delivering 1 A output at fixed 0.75 V with ±1.7% accuracy over –40°C to +125°C ambient, ultra-low dropout (315 mV max at 1 A, 3.3 VOUT), and 25 µA typical quiescent current - used in radar power rails and hybrid instrument cluster core supplies.
For engineers reviewing the TPS785075QWDRBRQ1 datasheet, TPS785075QWDRBRQ1 pinout, TPS785075QWDRBRQ1 application, or TPS785075QWDRBRQ1 equivalent, key selection criteria include automotive-grade thermal robustness (TJ = –40°C to +150°C), active output discharge, 550 µs soft-start, and wettable flank VSON-8 package compatibility with automated optical inspection.
Technical Context
The TPS785075QWDRBRQ1 implements a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (60 dB @ 1 kHz). Its internal 1.2-V bandgap reference and error amplifier support tight regulation across input range (1.7 V–6.0 V) and load (0–1 A), with foldback current limiting and thermal shutdown (170°C trip) for fault resilience.
It integrates undervoltage lockout (UVLO with 130 mV hysteresis), enable logic with 0.9 V high-threshold, and active pulldown circuitry for rapid output discharge when disabled - critical for power sequencing in automotive ADAS subsystems where rail collapse timing must be controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.75 V - matches core voltage requirements of modern automotive SoCs and FPGAs requiring sub-1-V supply rails. |
| Output Accuracy | ±1.7% max over –40°C to +125°C - ensures stable operation of sensitive analog/RF blocks without external calibration. |
| Dropout Voltage | 315 mV max at 1 A, 3.3 VOUT - enables efficient regulation from low-headroom sources like post-DC/DC outputs. |
| Quiescent Current | 25 µA typical - supports always-on domains in telematics and infotainment systems with strict sleep-mode leakage budgets. |
| PSRR | 60 dB @ 1 kHz - suppresses switching noise from upstream DC/DC converters feeding radar or camera sensor analog chains. |
| Soft-Start Time | 550 µs typical - limits inrush current during power-up, reducing stress on input capacitors and upstream converters. |
| Thermal Shutdown | 170°C trip, 155°C reset - provides fail-safe protection under sustained overload or poor PCB thermal design. |
Pinout & Package
TPS785075QWDRBRQ1 uses the wettable flank VSON-8 (DRB) package, 3.00 mm × 3.00 mm, with exposed thermal pad electrically tied to GND for enhanced heat dissipation in high-power-density automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Regulated output | Delivers 0.75 V to load; requires ≥0.47 µF ceramic capacitor to GND for stability and transient response. |
| 2 NC | No-connect | Not internally connected; recommended to tie to GND for improved thermal performance. |
| 3 NC | No-connect | Not internally connected; recommended to tie to GND for improved thermal performance. |
| 4 EN | Enable control input | Active-high logic; drives high (≥0.9 V) to enable regulator; must not float - connect to IN if unused. |
| 5 GND | Power ground | Reference node for all internal circuits; connects to thermal pad - must be soldered to large GND plane. |
| 6 NC | No-connect | Not internally connected; recommended to tie to GND for improved thermal performance. |
| 7 EN | Enable control input (duplicate) | Same function as Pin 4; both pins are bonded internally - use either or both for layout flexibility. |
| 8 IN | Input supply | Accepts 1.7 V–6.0 V; requires ≥0.1 µF ceramic capacitor to GND placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets functional safety requirements for non-safety-critical automotive ECUs. |
| Active output discharge | Internal pulldown resistor (~100 Ω at 3.3 V) discharges output within microseconds upon disable - prevents floating rails during power-down sequencing. |
| Foldback current limit | Transitions from brickwall (1.04 A min) to foldback (550 mA short-circuit) at 0.4×VOUT - reduces thermal stress during sustained overload vs. constant-current limiting. |
| Ultra-low noise & high PSRR | 30 µVRMS output noise (10 Hz–100 kHz) and 60 dB PSRR @ 1 kHz - preserves signal integrity in RF/analog front-ends of radar receivers. |
| UVLO with hysteresis | 1.42 V rising threshold with 130 mV hysteresis - prevents erratic startup/shutdown near battery brownout conditions in vehicle stop-start cycles. |
Applications
| Automotive Radar Power Supply | Hybrid Instrument Cluster Core Rail |
|---|---|
Use Scenario: Powers 77-GHz radar transceiver ASICs requiring clean, low-noise 0.75-V core supply with fast transient response to modulation bursts. IC Role / Device Role / Timing Role: Primary post-regulator after buck converter; delivers regulated 0.75 V with <10 µs load transient settling time. Use Value: High PSRR (60 dB @ 1 kHz) attenuates switching ripple from upstream DC/DC, preventing phase noise degradation in RF synthesizers. | Use Scenario: Supplies processor cores in digital instrument clusters where ECU must operate continuously across cold crank (5.5 V) and hot idle (13.5 V) battery conditions. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable 0.75 V to SoC core domain with AEC-Q100 temperature compliance. Use Value: ±1.7% accuracy over full automotive temperature range eliminates need for dynamic voltage scaling compensation in firmware. |
| Telematics Control Unit Memory Rail | ADAS Domain Controller Auxiliary Logic |
Use Scenario: Generates 0.75-V supply for LPDDR4 memory interfaces in cellular-connected telematics units operating in harsh thermal environments. IC Role / Device Role / Timing Role: Low-noise, high-accuracy LDO decoupling memory I/O and core logic from noisy system power bus. Use Value: 25 µA quiescent current enables low-power retention mode during cellular sleep states without compromising wake-up latency. | Use Scenario: Provides auxiliary 0.75-V bias to FPGA configuration logic and PCIe SerDes termination in multi-domain ADAS controllers. IC Role / Device Role / Timing Role: Secondary LDO supporting isolated power domains with independent enable control and active discharge. Use Value: Active pulldown (100 Ω) ensures rapid discharge of auxiliary rails during safe shutdown sequences required by ISO 26262 ASIL-B software stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B8701QKVURQ1 | Fixed 0.75 V output; 1.5-A rating; higher dropout (450 mV @ 1 A); TO-252-5 package. | Higher current capability but larger footprint and lower PSRR (45 dB @ 1 kHz); no active discharge. | Select when >1 A load current is required and board space allows TO-252; avoid where fast rail collapse is needed. |
| TLV767075QWDRBRQ1 | Fixed 0.75 V; 1-A rating; lower IQ (20 µA typ); same VSON-8 package; lower PSRR (50 dB @ 1 kHz). | Optimized for ultra-low power but trades off noise rejection - unsuitable for RF-sensitive radar applications. | Select for battery-backed always-on modules where PSRR >55 dB is not required; verify noise margin in analog signal chain. |
Compared with TPS7B8701QKVURQ1 and TLV767075QWDRBRQ1, the TPS785075QWDRBRQ1 uniquely balances 1-A capability, 60-dB PSRR, active discharge, and wettable flank packaging - making it optimal for space-constrained, noise-sensitive automotive radar and instrument cluster designs.
Availability
TPS785075QWDRBRQ1 is available at Aetrix Electronics and suitable for automotive head units, medium-range radar modules, and hybrid instrument clusters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS785075QWDRBRQ1 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 ICs, embedded processors, and connectivity solutions for automotive, industrial, and consumer markets.
The TPS785-Q1 product line delivers AEC-Q100 qualified LDOs optimized for automotive power management - specifically engineered to meet stringent thermal, noise, and reliability demands of radar, ADAS, and digital cockpit systems.
FAQ
What is the maximum input voltage rating for the TPS785075QWDRBRQ1?
The TPS785075QWDRBRQ1 has an absolute maximum input voltage rating of 6.5 V. Its recommended operating input voltage range is 1.7 V to 6.0 V. Exceeding 6.5 V risks permanent damage per the Absolute Maximum Ratings table; operation above 6.0 V is not guaranteed for regulation or thermal performance.
Does the TPS785075QWDRBRQ1 require an external feedback resistor network?
No, the TPS785075QWDRBRQ1 is a fixed-output 0.75-V regulator and does not require external feedback resistors. The FB pin is not connected internally in this variant - only adjustable versions (e.g., TPS78501QWDRBRQ1) use the FB pin. For TPS785075QWDRBRQ1, pins 2 and 3 are NC and must be tied to GND for thermal performance.
What is the thermal resistance (RθJA) of the TPS785075QWDRBRQ1 in its VSON-8 package?
The TPS785075QWDRBRQ1 in the wettable flank VSON-8 (DRB) package has a junction-to-ambient thermal resistance (RθJA) of 59.5°C/W under standard JEDEC test conditions. Actual thermal performance depends on PCB copper area, layer count, and thermal via placement beneath the exposed pad.
Can the TPS785075QWDRBRQ1 be used in parallel for higher current capability?
No, the TPS785075QWDRBRQ1 is not designed for parallel operation. Its internal architecture lacks current-sharing features such as precision current-limit matching or master-slave enable coordination. Attempting parallel connection may cause unequal current distribution and thermal instability - use a single higher-current LDO like TPS7B8701QKVURQ1 instead.
Is the TPS785075QWDRBRQ1 compatible with lead-free reflow profiles?
Yes, the TPS785075QWDRBRQ1 is RoHS-compliant and qualified for standard lead-free reflow profiles, including JEDEC J-STD-020D peak temperatures up to 260°C. The wettable flank VSON-8 package supports automated optical inspection (AOI) of solder joints, ensuring reliable assembly in automotive manufacturing lines.
TPS785075QWDRBRQ1 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):
- 0.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.13V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 30dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-SON (3x3)
TPS785075QWDRBRQ1 FAQ
1.How can I place an order for TPS785075QWDRBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS785075QWDRBRQ1 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 TPS785075QWDRBRQ1 reliable?
The price and inventory of TPS785075QWDRBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS785075QWDRBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS785075QWDRBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS785075QWDRBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS785075QWDRBRQ1?
TPS785075QWDRBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS785075QWDRBRQ1 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 TPS785075QWDRBRQ1?
For technical support, including TPS785075QWDRBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS785075QWDRBRQ1 requirements.
6.How does Aetrix verify that TPS785075QWDRBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS785075QWDRBRQ1 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 TPS785075QWDRBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS785075QWDRBRQ1?
All TPS785075QWDRBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS785075QWDRBRQ1, 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 TPS785075QWDRBRQ1 part is unused and in its original packaging.
Return procedure for TPS785075QWDRBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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