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Texas Instruments TPS76701QPWPR
- Part No.:
- TPS76701QPWPR
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS76701QPWPR.pdf
- Description:
- IC REG LIN POS ADJ 1A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,416
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Product details
Overview
TPS76701QPWPR from Texas Instruments is an adjustable low-dropout linear regulator delivering up to 1 A output current with 230 mV dropout at 1 A (for 5-V output), 85 µA typical quiescent current, ±2% output voltage accuracy over line/load/temperature, and integrated open-drain power-on reset with 200-ms delay. It serves as a primary voltage regulation stage in battery-powered microcontroller systems requiring stable, low-noise, fast-transient-response power.
For engineers reviewing the TPS76701QPWPR datasheet, TPS76701QPWPR pinout, TPS76701QPWPR application, or TPS76701QPWPR equivalent, key selection criteria include its PMOS pass architecture enabling load-independent quiescent current, 10-µF low-ESR capacitor stability, thermal shutdown protection, and FB-based programmability across 1.5 V to 5.5 V.
Technical Context
The TPS76701QPWPR uses a PMOS pass transistor to achieve ultra-low, load-invariant quiescent current (85 µA typ) and minimal dropout voltage directly proportional to output current. Its internal 1.1834-V reference feeds a high-impedance feedback amplifier connected to the FB pin for precise external resistor-divider programming.
It integrates an undervoltage-monitoring comparator that asserts the open-drain RESET output when regulated output falls to 92–98% of nominal value, with built-in 200-ms delay. Protection includes thermal shutdown at ~150°C and current limiting at ~1.7 A, while remaining stable at zero load without minimum output capacitance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1 A maximum continuous - supports single-core MCUs, FPGAs, and analog signal chains without derating. |
| Dropout Voltage | 230 mV at 1 A (TPS76750 condition); for TPS76701 programmed to 3.3 V, typical dropout is 350 mV - enables operation from 3.65 V input to sustain 3.3 V output under full load. |
| Quiescent Current | 85 µA typical (0–1 A load range) - extends battery life in always-on sensor nodes and portable instrumentation. |
| Output Accuracy | ±2% over line, load, and temperature (−40°C to +125°C) - ensures reliable logic-level compliance for 3.3-V and 2.5-V digital interfaces. |
| Reset Threshold | 92–98% of nominal output voltage with 200-ms delay - provides deterministic system reset timing during brownout conditions. |
| Input Voltage Range | 2.7 V to 10 V - compatible with Li-ion (3.0–4.2 V), 5-V rails, and industrial 9-V supplies. |
| Thermal Shutdown | 150°C junction temperature - protects against sustained overload or poor PCB heatsinking in enclosed enclosures. |
Pinout & Package
TPS76701QPWPR is housed in a 20-pin HTSSOP (PWP) package measuring 6.50 mm × 4.40 mm, featuring exposed thermal pad (GND/HSINK pins) for enhanced thermal performance. The package supports surface-mount reflow and requires PCB copper pour under the thermal pad for optimal junction-to-board conduction (RθJB = 8.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND/HSINK (Pins 1,2,9,10,11,12,19,20) | Ground reference and thermal heatsink | Must be connected to large PCB ground plane; all eight pins share same internal node for low-impedance return path and thermal dissipation. |
| EN (Pin 5) | Enable control input | TTL-compatible; high ≥1.7 V enables regulation, low ≤0.9 V disables output and reduces quiescent current to 1 µA. |
| IN (Pins 6,7) | Unregulated input supply | Dual pins reduce trace resistance and inductance; accepts 2.7–10 V input with internal overvoltage clamp to 13.5 V absolute max. |
| OUT (Pins 13,14) | Regulated output voltage | Dual pins minimize voltage drop under 1-A load; requires 10-µF output capacitor (ESR 50 mΩ–1.5 Ω) for loop stability. |
| RESET (Pin 16) | Open-drain reset indicator | Asserts low when output drops below 92–98% of nominal; requires external pullup (e.g., 10 kΩ to VOUT) for MCU reset signaling. |
| FB/NC (Pin 15) | Feedback input (adjustable mode) / No-connect (fixed mode) | Connects to resistor divider (R1/R2) to set output voltage; high-impedance node (2 nA bias) - routing must avoid noise coupling. |
| NC (Pins 4,8,17,18) | No internal connection | Not bonded; may be left unconnected or tied to GND for mechanical stability - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS pass element | Enables 85 µA quiescent current independent of load - eliminates battery drain during sleep modes in IoT edge devices. |
| Fast transient response | Stable with only 10 µF low-ESR output capacitor - reduces board space vs. traditional LDOs requiring >47 µF tantalum. |
| Programmable output (1.5–5.5 V) | Set via external R1/R2 divider with 1.1834-V internal reference - supports flexible rail generation without stocking multiple fixed variants. |
| Integrated 200-ms reset timer | Monitors regulated output voltage directly - eliminates need for external supervisor IC in microcontroller power sequencing. |
| Thermal and current protection | Shuts down at 150°C junction temp and limits current to ~1.7 A - prevents catastrophic failure during short-circuit or overload events. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG monitor powered by single-cell Li-ion battery (3.0–4.2 V) supplying 3.3-V ADC, op-amps, and BLE radio. IC Role / Device Role / Timing Role: Primary LDO regulating main analog/digital rail; provides clean, low-noise 3.3 V with fast load-step response to BLE transmit bursts. Use Value: 85 µA quiescent current extends battery runtime beyond 7 days; 350-mV dropout at 1 A allows full 3.3-V operation down to 3.65-V input. |
Use Scenario: DIN-rail mounted PLC module converting 24-V DC to isolated 5-V and 3.3-V rails for microcontroller and field I/O drivers. IC Role / Device Role / Timing Role: Secondary non-isolated LDO generating 3.3-V logic supply from intermediate 5-V bus; handles dynamic loads from optocoupler switching. Use Value: 1-A rating sustains peak I/O driver currents; thermal shutdown prevents latch-up during ambient temperatures up to 70°C. |
| Automotive Body Control Units | Test & Measurement Equipment |
|
Use Scenario: Door module MCU powered from vehicle battery (9–16 V) via buck converter stepping to 5 V, then TPS76701QPWPR regulating to 3.3 V. IC Role / Device Role / Timing Role: Final-stage LDO ensuring noise-free 3.3-V supply for CAN transceiver and LIN interface; RESET output triggers MCU fault recovery. Use Value: ±2% output tolerance guarantees CAN PHY compliance; 200-ms RESET delay meets ISO 16750-2 cold-crank brownout timing requirements. |
Use Scenario: Benchtop multimeter using precision 2.5-V reference and 3.3-V FPGA configuration rail, both derived from shared 5-V supply. IC Role / Device Role / Timing Role: Adjustable LDO configured to 2.5 V for reference buffer; low output noise (55 µVrms) preserves ADC ENOB. Use Value: Programmability avoids BOM proliferation; 10-µF ceramic capacitor compatibility simplifies layout near sensitive analog circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76733QPWPR | Fixed 3.3-V output; identical pinout, package, and specs except non-adjustable and no FB pin. | Eliminates external resistor divider but lacks flexibility for multi-rail designs or future voltage changes. | Select when 3.3 V is final, stable requirement and board space for R1/R2 is constrained. |
| TPS7A4700RGWR | Ultra-low-noise (4.7 µVrms), 1-A, adjustable LDO; SO-8 package; higher IQ (1.1 mA), no RESET output. | Better for precision analog (e.g., audio, RF), but lacks power-good signaling and has higher quiescent draw. | Select for noise-sensitive signal chains where RESET functionality is handled elsewhere or unnecessary. |
Compared with TPS76701QPWPR, TPS76733QPWPR offers plug-and-play 3.3-V regulation with identical thermal and transient performance but no programmability, while TPS7A4700RGWR trades off RESET and ultra-low IQ for significantly lower output noise - making it suitable for high-fidelity analog rather than embedded control applications.
Availability
TPS76701QPWPR is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS76701QPWPR 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, embedded processing, and power management technologies, with decades of expertise in high-reliability power regulation ICs.
The TPS767xx family was designed for battery-powered and industrial embedded systems demanding ultra-low quiescent current, fast transient response, and integrated power monitoring - targeting applications where runtime, thermal margin, and system-level reliability are critical.
FAQ
What output voltage range does the TPS76701QPWPR support?
The TPS76701QPWPR is an adjustable LDO regulator supporting output voltages from 1.5 V to 5.5 V, set externally using a resistor divider connected to the FB pin. Its internal 1.1834-V reference enables precise programming; for example, using R2 = 30.1 kΩ and R1 = 53.6 kΩ yields a nominal 3.3-V output. The TPS76701QPWPR maintains ±2% accuracy across this full range under specified operating conditions.
Does the TPS76701QPWPR require a minimum load for stability?
No, the TPS76701QPWPR is stable at zero load and does not require a minimum output current. This characteristic is confirmed in the datasheet's Device Functional Modes section and enables use in intermittent-operation systems like wake-on-event sensors, where the load may be disconnected or idle for extended periods without risking oscillation or regulation loss.
How does the RESET function operate on the TPS76701QPWPR?
The TPS76701QPWPR features an open-drain RESET output that goes low when the regulated output voltage drops to 92–98% of its nominal value, with a fixed 200-ms timeout delay. It requires an external pullup resistor (e.g., 10 kΩ to VOUT) and is commonly used to trigger microcontroller reset circuits. The RESET signal does not assert for minor deviations within the ±2% output tolerance - only for significant undervoltage events affecting system functionality.
What capacitor types and values are recommended for the TPS76701QPWPR?
The TPS76701QPWPR requires a minimum 10-µF output capacitor with ESR between 50 mΩ and 1.5 Ω for loop stability. Solid tantalum, aluminum electrolytic, and multilayer ceramic capacitors meeting these specifications are acceptable. A 0.1-µF ceramic bypass capacitor on the IN pin is recommended if the device is located >2 inches from the power source. The TPS76701QPWPR does not require an input capacitor for basic operation but benefits from one for improved transient immunity.
Can the TPS76701QPWPR be used in automotive applications?
Yes, the TPS76701QPWPR is qualified for automotive applications per its Q-grade suffix and operates across −40°C to +125°C junction temperature. Its 200-ms RESET delay, ±2% output accuracy, thermal shutdown at 150°C, and robust input voltage range (2.7–10 V) align with requirements for body electronics such as door modules and lighting controllers. However, system-level qualification (e.g., AEC-Q200 for passive components) remains the responsibility of the end designer.
TPS76701QPWPR 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):
- 1.5V
- 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, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS76701QPWPR FAQ
1.How can I place an order for TPS76701QPWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76701QPWPR 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 TPS76701QPWPR reliable?
The price and inventory of TPS76701QPWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76701QPWPR is usually 5 days.
3.What payment methods are accepted for TPS76701QPWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76701QPWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76701QPWPR?
TPS76701QPWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76701QPWPR 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 TPS76701QPWPR?
For technical support, including TPS76701QPWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76701QPWPR requirements.
6.How does Aetrix verify that TPS76701QPWPR is sourced from the original manufacturer or authorized distributors?
All TPS76701QPWPR 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 TPS76701QPWPR meets industry standards.
7.What is the process for return or replacement of TPS76701QPWPR?
All TPS76701QPWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS76701QPWPR, 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 TPS76701QPWPR part is unused and in its original packaging.
Return procedure for TPS76701QPWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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