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Texas Instruments TPS74801QWDRCRQ1
- Part No.:
- TPS74801QWDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS74801QWDRCRQ1.pdf
- Description:
- TPS74801QWDRCRQ1
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
TPS74801QWDRCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 1.5A low-dropout linear regulator with programmable soft-start, 0.8V–3.6V adjustable output, ultra-low 0.8V minimum input voltage, and integrated power-good (PG) output - designed for powering FPGAs, DSPs, and ASICs in telematics and infotainment systems.
For engineers reviewing the TPS74801QWDRCRQ1 datasheet, TPS74801QWDRCRQ1 pinout, TPS74801QWDRCRQ1 application, or TPS74801QWDRCRQ1 equivalent, key selection criteria include VIN/VBIAS sequencing flexibility, 2% output accuracy over line/load/temperature, 60mV typical dropout at 1.5A, stability with ≥2.2μF ceramic output capacitors, and VSON-10 package thermal performance up to TJ = +150°C.
Technical Context
The TPS74801QWDRCRQ1 uses an NMOS pass transistor architecture powered by a dedicated VBIAS rail (2.7V–5.5V), enabling stable regulation down to 0.8V output while decoupling loop stability from output capacitance selection. Its precision 0.8V internal reference and error amplifier deliver 2% total output accuracy across –40°C to +125°C ambient.
Programmable soft-start is implemented via external capacitor (CSS) charging at 530nA (new chip), generating a monotonic VOUT ramp; PG output provides open-drain active-high status monitoring with 90% VOUT trip threshold and 3% hysteresis, supporting supply sequencing in multi-rail automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 1.5A continuous - supports high-current digital loads like radar SoCs and display controllers without derating at TJ ≤ +125°C. |
| Dropout voltage | 60mV typ at 1.5A, VBIAS = 5V - enables efficient regulation with minimal headroom, critical for low-VIN battery-fed subsystems. |
| Output accuracy | ±2% over line, load, and temperature - ensures reliable operation of voltage-sensitive processors and transceivers without margining. |
| Input voltage range | 0.8V to 5.5V - allows direct regulation from 1-cell LiFePO₄ or boosted 3.3V rails, reducing need for intermediate conversion stages. |
| VBIAS range | 2.7V to 5.5V - powers internal circuitry independently, enabling fast transient response even when VIN is near VOUT. |
| Soft-start control | Capacitor-programmable (CSS) - eliminates inrush current stress on upstream supplies and prevents brownout during FPGA/ASIC power-up. |
| Stability condition | Stable with any ≥2.2μF ceramic output capacitor - removes dependency on specific ESR, simplifying layout and BOM. |
Pinout & Package
TPS74801QWDRCRQ1 is packaged in a 3mm × 3mm × 1mm VSON-10 (DRC) package with exposed thermal pad, optimized for high-power-density automotive PCBs and thermally constrained modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 1,2) | Main input supply | Accepts regulated or unregulated input (0.8V–5.5V); dual pins reduce IR drop and improve thermal path for 1.5A operation. |
| BIAS (Pin 4) | Bias supply input | Powers internal reference, error amp, and control logic; enables low-VIN operation and improves transient response when VIN ≈ VOUT. |
| EN (Pin 5) | Enable control | Active-high digital input (VEN ≥ 1.1V enables); includes 55mV hysteresis and 20µs deglitch for robust sequencing in noisy automotive environments. |
| FB (Pin 8) | Feedback node | Connects to resistor divider center tap; sets output voltage (0.8V–3.6V); requires no floating connection - critical for accuracy. |
| PG (Pin 3) | Power-good monitor | Open-drain active-high output; signals VOUT ≥ 90% nominal; requires external pullup (10kΩ–1MΩ) to enable supply sequencing or fault detection. |
| SS (Pin 7) | Soft-start timing | Connects to CSS capacitor to ground; controls monotonic VOUT ramp time (tSS = VREF × CSS / ISS); default ramp = 250µs if unconnected. |
| OUT (Pins 9,10) | Regulated output | Dual-output pins reduce trace resistance and inductance; delivers 1.5A with <60mV dropout; requires ≥2.2μF ceramic capacitor to GND. |
| GND (Pin 6) | Ground reference | Primary signal and power return; must be connected to PCB ground plane; thermal pad soldered to GND enhances θJA by >20%. |
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 for telematics and ADAS ECUs. |
| Programmable soft-start | Monotonic, capacitor-controlled startup eliminates inrush current spikes and ensures clean power delivery to sensitive digital loads. |
| VBIAS-powered architecture | Separate bias rail maintains regulation integrity and transient response when VIN drops close to VOUT - essential for stop-start battery profiles. |
| Power-good (PG) output | Configurable sequencing signal with 90% VOUT trip threshold and 3% hysteresis - enables safe, ordered power-up/down of multi-supply systems. |
| Ultra-low VIN capability | Operates down to 0.8V input - supports direct regulation from single-cell batteries or low-voltage DC-DC outputs without cascaded conversion. |
Applications
| Telematic Control Units | Infotainment Systems |
|---|---|
Use Scenario: Powering cellular modem baseband processors and GNSS receivers in vehicle connectivity modules. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V LDO supplying core logic and I/O rails with tight voltage tolerance and low noise. Use Value: 2% accuracy and 30μVRMS output noise ensure reliable RF data transmission and precise timing for LTE/5G and GPS signal acquisition. |
Use Scenario: Regulating power for display interface ICs (LVDS, MIPI) and audio codecs in central infotainment head units. IC Role / Device Role / Timing Role: Low-noise, sequenced supply delivering stable 3.3V/1.1V rails synchronized with system enable signals. Use Value: Programmable soft-start prevents display flicker or audio pop during cold boot; PG output coordinates with main SoC power manager. |
| Automotive Clusters | Medium-Range Radar Modules |
Use Scenario: Supplying microcontroller, graphics accelerator, and CAN transceiver in digital instrument clusters. IC Role / Device Role / Timing Role: High-accuracy, AEC-Q100-compliant LDO providing 5V/3.3V rails with fail-safe PG monitoring. Use Value: ±2% output accuracy prevents MCU reset under wide temperature and load variation; PG flag triggers cluster self-test on power-up. |
Use Scenario: Powering 77GHz radar transceiver ASICs requiring ultra-low-noise, tightly regulated 1.2V core and 2.5V analog supplies. IC Role / Device Role / Timing Role: Low-ripple, high-PSRR LDO delivering clean power to PLLs and ADC front-ends in radar signal chain. Use Value: 69dB PSRR at 1kHz and 20×VOUT output noise (e.g., 24μVRMS @ 1.2V) preserve SNR and angular resolution in Doppler processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74901QWDRBRQ1 | Same family, 2A rating, VSON-8 package; higher current but no PG output and fixed soft-start (no CSS pin). | Lacks power-good signaling and programmable soft-start - unsuitable for systems requiring supply sequencing or inrush control. | Select only when higher output current is required and PG/soft-start flexibility is unnecessary. |
| TLV75712PQDBVRQ1 | 1A, 1.2V fixed output, SOT-23-5; no VBIAS, no PG, no soft-start; 170mV dropout at 1A. | Lower integration, no sequencing support, limited VIN range (1.4V–5.5V); not suitable for sub-1.2V or low-headroom designs. | Use only for cost-sensitive, low-current, fixed-voltage applications where sequencing and ultra-low dropout are not required. |
Compared with TPS74801QWDRCRQ1, TPS74901QWDRBRQ1 offers higher current but sacrifices PG and soft-start programmability, while TLV75712PQDBVRQ1 reduces size and cost at the expense of design flexibility, accuracy, and automotive-grade transient robustness.
Availability
TPS74801QWDRCRQ1 is available at Aetrix Electronics and suitable for telematics, infotainment, and radar applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS74801QWDRCRQ1 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 and embedded processing technologies, with deep expertise in automotive power management and functional safety.
The TPS74801-Q1 belongs to TI's automotive LDO portfolio, engineered specifically for high-reliability, low-noise power delivery in ADAS, infotainment, and vehicle networking systems operating across –40°C to +125°C.
FAQ
What is the maximum junction temperature specification for TPS74801QWDRCRQ1?
The TPS74801QWDRCRQ1 is fully specified for junction temperature (TJ) up to +150°C in the new chip version, with thermal metrics including RθJA = 47.2°C/W for the DRC package. This rating enables reliable operation in under-hood and high-power-density automotive modules where ambient temperatures exceed +105°C.
Does TPS74801QWDRCRQ1 require an external capacitor on the BIAS pin?
Yes, TPS74801QWDRCRQ1 requires a 0.1μF to 1μF ceramic capacitor between BIAS and GND (CBIAS) to stabilize the bias supply and suppress noise coupling into the internal reference. TI recommends 0.47μF X7R for optimal PSRR and transient immunity across temperature.
Can TPS74801QWDRCRQ1 operate without the VBIAS supply connected?
No - TPS74801QWDRCRQ1 requires VBIAS ≥ 2.7V or VOUT + VDO(VBIAS), whichever is higher, to power its internal reference and control circuits. If VBIAS is omitted while VIN ≥ VOUT + 1.62V, the device may not regulate correctly or meet datasheet accuracy and dropout specifications.
What is the soft-start capacitor value needed for a 5ms ramp time on TPS74801QWDRCRQ1?
Using tSS = (VREF × CSS) / ISS with VREF = 0.8V and ISS = 530nA (new chip), a 5ms soft-start time requires CSS ≈ 33nF. TI recommends X7R or C0G dielectrics; values above 15nF risk incomplete discharge during rapid enable cycling.
How does the power-good (PG) output behave during thermal shutdown on TPS74801QWDRCRQ1?
During thermal shutdown, the TPS74801QWDRCRQ1 disables regulation and pulls PG low (active-low state) once VOUT falls below 85% of nominal. The PG pin remains low until VOUT recovers above 90% VOUT and thermal conditions normalize, providing fail-safe system monitoring.
TPS74801QWDRCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.6V
- Voltage Dropout (Max):
- 0.165V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 30dB (1kHz ~ 300kHz)
- Control Features:
- Current Limit
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS74801QWDRCRQ1 FAQ
1.How can I place an order for TPS74801QWDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS74801QWDRCRQ1 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 TPS74801QWDRCRQ1 reliable?
The price and inventory of TPS74801QWDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS74801QWDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS74801QWDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS74801QWDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS74801QWDRCRQ1?
TPS74801QWDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS74801QWDRCRQ1 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 TPS74801QWDRCRQ1?
For technical support, including TPS74801QWDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS74801QWDRCRQ1 requirements.
6.How does Aetrix verify that TPS74801QWDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS74801QWDRCRQ1 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 TPS74801QWDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS74801QWDRCRQ1?
All TPS74801QWDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS74801QWDRCRQ1, 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 TPS74801QWDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS74801QWDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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