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Texas Instruments TPS76801QPWPRQ1
- Part No.:
- TPS76801QPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS76801QPWPRQ1.pdf
- Description:
- IC REG LIN POS ADJ 1A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,596
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Product details
Overview
TPS76801QPWPRQ1 from Texas Instruments is an automotive-grade adjustable low-dropout (LDO) voltage regulator delivering up to 1 A output current with 230 mV dropout at 1 A (TPS76850-Q1 variant), ±2% output voltage accuracy over temperature and load, and 85 μA typical quiescent current. It features PMOS pass architecture, open-drain power-good (PG) output, enable control, and thermal shutdown - designed for battery-sensitive automotive subsystems including ADAS camera modules and instrument clusters.
For engineers reviewing the TPS76801QPWPRQ1 datasheet, TPS76801QPWPRQ1 pinout, TPS76801QPWPRQ1 application, or TPS76801QPWPRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), fast transient response with 10 μF output capacitance, PG threshold hysteresis (0.5% VO), and compatibility with ceramic, tantalum, and aluminum electrolytic capacitors meeting 50 mΩ–1.5 Ω ESR range.
Technical Context
The TPS76801QPWPRQ1 uses a PMOS pass transistor enabling ultralow, load-independent quiescent current (85 μA typ) and linear dropout behavior proportional to output current. Its internal 1.1834 V reference feeds a high-impedance feedback amplifier, supporting adjustable output from 1.2 V to 5.5 V via external resistor divider (R1/R2).
Power-good logic monitors output voltage with 92–98% VO trip threshold and active-high open-drain output requiring external pullup; enable input is TTL-compatible (low-enable, 0.9 V max low, 1.7 V min high). Thermal shutdown activates at ~150°C junction temperature, with automatic recovery below ~130°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 1 A maximum continuous - supports high-current microcontrollers and sensors in automotive ECUs |
| Adjustable output range | 1.2 V to 5.5 V - enables flexible rail generation without multiple fixed-voltage SKUs |
| Quiescent current | 85 μA typical - extends battery life in always-on vehicle systems (e.g., telematics wake-up circuits) |
| Dropout voltage | 230 mV at 1 A (TPS76850-Q1); TPS76801QPWPRQ1 maintains similar PMOS-derived low-dropout behavior - allows operation with minimal VIN–VO margin |
| Output accuracy | ±2% over line, load, and temperature (–40°C to 125°C) - ensures reliable logic-level compliance for 1.8 V/2.5 V/3.3 V digital interfaces |
| Power-good threshold | 92–98% VO with 0.5% hysteresis - provides clean, bounce-free reset signaling for downstream processors |
| ESD rating | HBM ±2000 V, CDM ±500 V - meets AEC-Q100 stress requirements for harsh automotive environments |
Pinout & Package
TPS76801QPWPRQ1 is housed in a thermally enhanced 20-pin HTSSOP (PWP) package measuring 6.50 mm × 4.40 mm, featuring an exposed thermal pad soldered to PCB ground for improved heat dissipation (RθJB = 22.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 6, 7) | Input supply connection | Dual-input pins reduce trace resistance and improve current handling for 1-A operation |
| OUT (Pins 13, 14) | Regulated output node | Dual-output pins minimize voltage drop under full load and support low-impedance output capacitor placement |
| GND/HSINK (Pins 1, 2, 9–12, 19, 20) | Ground and thermal sink | Eight dedicated GND/HSINK pins plus thermal pad ensure robust grounding and efficient heat transfer to PCB |
| EN (Pin 5) | Enable control input | Active-low TTL-compatible input - tie to GND for always-on operation; >1.7 V disables regulator, reducing IQ to <1 μA |
| PG (Pin 16) | Power-good status indicator | Open-drain output requiring external pullup - asserts high when VO ≥92% nominal, deasserts at ≤98% VO |
| FB/NC (Pin 15) | Feedback input / No-connect | Connected to internal error amplifier for adjustable mode; left unconnected (NC) in fixed-output variants - unused here as TPS76801QPWPRQ1 is adjustable |
| NC (Pins 4, 8, 17, 18) | No internal connection | Unbonded pins - must remain unconnected per design; no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for engine bay, transmission control, and ADAS sensor modules |
| Fast transient response | Stable with 10 μF output capacitance and ESR 50 mΩ–1.5 Ω - eliminates need for costly low-ESR capacitors while maintaining regulation during load steps |
| PMOS pass element | Enables 85 μA quiescent current independent of load - critical for low-power sleep modes in automotive infotainment and body control units |
| Thermal shutdown with hysteresis | Shuts down at ~150°C junction, resumes at ~130°C - prevents thermal runaway during sustained overload or poor heatsinking |
| Reverse current protection | Integrated back diode conducts reverse current when VIN < VOUT - avoids external diode in power-path designs with backup batteries or dual supplies |
Applications
| ADAS Camera Power Supply | Instrument Cluster Microcontroller Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and CMOS image sensor in rear-view or surround-view camera modules requiring stable 1.8 V or 2.5 V rails. IC Role / Device Role / Timing Role: Adjustable LDO providing clean, low-noise 1.8 V output with fast load transient response to handle burst-mode sensor readouts. Use Value: 55 μVRMS output noise and ±2% accuracy ensure pixel integrity and ADC reference stability across temperature. | Use Scenario: Supplies 3.3 V to MCU, display driver, and CAN transceiver in digital instrument clusters with frequent power cycling. IC Role / Device Role / Timing Role: Primary post-regulator delivering regulated 3.3 V from 5 V or 12 V intermediate bus, with PG signaling MCU reset sequencing. Use Value: PG output with 0.5% hysteresis guarantees glitch-free power-on reset; 230 mV dropout enables operation during cold-crank (6.5 V battery dip). |
| Telematics Control Unit (TCU) Always-On Rail | Automotive Gateway Low-Power Domain |
Use Scenario: Generates 1.2 V or 1.5 V core voltage for cellular modem SoC in always-on telematics units with strict quiescent current budget. IC Role / Device Role / Timing Role: Ultra-low-IQ adjustable LDO enabling sub-100 μA system sleep current while maintaining processor retention voltage. Use Value: 85 μA typical IQ and <1 μA shutdown current extend battery backup runtime beyond ISO 16750-2 requirements. | Use Scenario: Provides isolated 2.5 V or 3.3 V domain for gateway MCU and Ethernet PHY during vehicle sleep states. IC Role / Device Role / Timing Role: Secondary LDO with EN control synchronized to vehicle wake-up signals, minimizing leakage in multi-rail architectures. Use Value: Dual IN/OUT pins reduce IR drop; thermal pad and eight GND pins maintain <125°C junction temp under 1 A load in confined gateway enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B8750QKVURQ1 | 500 mA max output, integrated watchdog timer, lower IQ (25 μA), no PG output | Suitable for lower-current safety-critical domains (e.g., airbag controllers) where supervision is needed but PG is not required | Select if system requires built-in window watchdog and current is ≤500 mA; avoid if PG signaling or 1 A output is mandatory |
| TLV76733QWDRBRQ1 | 3.3 V fixed output only, 1 A, 125 μA IQ, no PG, smaller 8-pin WSON package | Optimized for space-constrained fixed-rail applications (e.g., radar sensor analog front-end) without adjustment or status reporting | Select for cost-sensitive, fixed-voltage use cases where board area is limited and PG/adjustability are unnecessary |
Compared with TPS76801QPWPRQ1, TPS7B8750QKVURQ1 trades output current and PG for watchdog integration and lower IQ, while TLV76733QWDRBRQ1 sacrifices adjustability and PG for compact size and simplified BOM - making TPS76801QPWPRQ1 the optimal choice for systems needing full 1-A adjustability with automotive-grade PG monitoring.
Availability
TPS76801QPWPRQ1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, instrument cluster MCUs, telematics control units, and gateway low-power domains requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS76801QPWPRQ1 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 specializing in analog, embedded processing, and automotive ICs, with decades of leadership in power management innovation.
The TPS768xx-Q1 product line delivers fast-transient, AEC-Q100 qualified LDO regulators targeting automotive power train, cluster, and ADAS subsystems where reliability, low quiescent current, and precise voltage regulation are critical.
FAQ
What output voltage range does the TPS76801QPWPRQ1 support?
The TPS76801QPWPRQ1 is an adjustable LDO regulator supporting an output voltage range of 1.2 V to 5.5 V, set by an external resistor divider connected to the FB pin. Its internal 1.1834 V reference enables precise programming - for example, 3.3 V output requires R1 = 53.6 kΩ and R2 = 30.1 kΩ. This flexibility eliminates the need for multiple fixed-voltage SKUs in multi-rail automotive designs.
Does the TPS76801QPWPRQ1 require a minimum load for stability?
No, the TPS76801QPWPRQ1 is stable at zero load and does not require a minimum output current. Its PMOS-based architecture and compensation design ensure loop stability with 10 μF output capacitance across the full operating range (0 mA to 1 A), simplifying design for intermittent-load applications like automotive body controllers and sensor nodes.
How does the power-good (PG) output of the TPS76801QPWPRQ1 behave during undervoltage conditions?
The PG output of the TPS76801QPWPRQ1 is an open-drain, active-high signal that remains high while output voltage stays above 92% of nominal, then pulls low when VO drops to ≤98% VO - with 0.5% hysteresis preventing chatter. It requires an external pullup resistor and is commonly used to drive power-on reset logic for downstream MCUs in automotive clusters and gateways.
What thermal performance can be expected from the TPS76801QPWPRQ1 in a typical automotive PCB layout?
In a standard 4-layer PCB with 2 oz copper and the thermal pad fully soldered to an internal ground plane, the TPS76801QPWPRQ1 achieves RθJB = 22.1°C/W. At 1 A load with 3.3 V output and 5 V input, power dissipation is ~1.7 W, resulting in ~37.5°C rise above ambient - well within the 125°C max junction limit even at 85°C ambient, provided adequate copper area is allocated.
Can the TPS76801QPWPRQ1 be used with ceramic output capacitors?
Yes, the TPS76801QPWPRQ1 is explicitly designed to be stable with ceramic output capacitors of ≥10 μF and ESR between 50 mΩ and 1.5 Ω. Most commercial 1206/1210-size 10–22 μF X5R/X7R MLCCs meet this specification, enabling compact, high-reliability designs without electrolytic components - ideal for automotive vibration and temperature cycling requirements.
TPS76801QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS76801QPWPRQ1 FAQ
1.How can I place an order for TPS76801QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76801QPWPRQ1 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 TPS76801QPWPRQ1 reliable?
The price and inventory of TPS76801QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76801QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS76801QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76801QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76801QPWPRQ1?
TPS76801QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76801QPWPRQ1 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 TPS76801QPWPRQ1?
For technical support, including TPS76801QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76801QPWPRQ1 requirements.
6.How does Aetrix verify that TPS76801QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS76801QPWPRQ1 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 TPS76801QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS76801QPWPRQ1?
All TPS76801QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76801QPWPRQ1, 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 TPS76801QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS76801QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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