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Texas Instruments TPS76425DBVR
- Part No.:
- TPS76425DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76425DBVR.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
TPS76425DBVR from Texas Instruments is a 2.5-V fixed-output, 150-mA low-dropout linear regulator with PMOS pass element, 50 µV typical output noise, 300 mV dropout at 150 mA, and 85 µA typical quiescent current-designed for battery-powered portable electronics requiring stable low-noise bias for RF front-ends and precision analog circuitry.
For engineers reviewing the TPS76425DBVR datasheet, TPS76425DBVR pinout, TPS76425DBVR application, or TPS76425DBVR equivalent, this page delivers verified specifications, SOT-23 (DBV) package details, functional pin roles, low-noise LDO design considerations, and validated alternative parts for space-constrained, low-power systems operating from –40°C to 125°C.
Technical Context
The TPS76425DBVR employs a voltage-driven PMOS pass transistor-replacing conventional PNP elements-to achieve load-independent quiescent current (≤140 µA) and dropout voltage directly proportional to load (e.g., 300 mV at 150 mA). Its internal bypass filter (0.01 µF on BYPASS pin) reduces output noise to 50 µV RMS (300 Hz–50 kHz).
It integrates thermal shutdown (trip at ~165°C, auto-recovery at ~140°C), foldback current limiting (~0.8–1.5 A), and reverse-current protection via the PMOS body diode. The enable input (EN) supports logic-level shutdown, reducing quiescent current to ≤1 µA at TJ = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.5% (2.438–2.562 V at 1–150 mA, TJ = 25°C); tight regulation enables direct powering of 2.5-V ADCs and PLLs without post-regulation filtering. |
| Max Output Current | 150 mA continuous; sufficient for single-core microcontrollers, RF transceivers, or sensor signal chains in portable devices. |
| Dropout Voltage | 300 mV typical at 150 mA (VI ≥ VO + 1 V); allows operation down to 2.8 V input for 2.5 V output-extending battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Output Noise | 50 µV RMS (300 Hz–50 kHz); achieved via internal BYPASS pin low-pass filter; critical for noise-sensitive analog/RF stages like VCOs and LNA bias rails. |
| Quiescent Current | 85 µA typical (0–150 mA load); stable over full load range due to PMOS gate-drive architecture-enables multi-day standby in always-on IoT sensors. |
| Shutdown Current | ≤1 µA at TJ = 25°C when EN < 0.5 V; ensures negligible battery drain during system sleep modes. |
| Operating Temp Range | –40°C to 125°C junction temperature; qualified for automotive cabin and industrial edge-node environments. |
Pinout & Package
TPS76425DBVR is housed in a 5-pin SOT-23 (DBV) package-1.6 mm × 2.9 mm footprint, 1.1 mm height-with gull-wing leads optimized for automated assembly and thermal performance (RθJA = 259 °C/W on low-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply voltage | Accepts 2.7–10 V DC; minimum VI = VO + 1 V or 2.7 V, whichever is greater-supports wide-input battery and adapter sources. |
| 2 (GND) | Ground reference | Common return path for IN, OUT, EN, and BYPASS; requires low-impedance PCB plane connection to minimize noise coupling. |
| 3 (EN) | Enable input | Active-high logic control (VIH ≥ 1.4 V, VIL ≤ 0.5 V); pulls internal regulator into <1 µA shutdown state when low-enables system-level power sequencing. |
| 4 (OUT) | Regulated output voltage | Delivers stable 2.5 V to load; requires ≥4.7 µF output capacitor (ESR 0.2–10 Ω) for loop stability per datasheet guidelines. |
| 5 (BYPASS) | Output bypass capacitor terminal | Connects to 0.01 µF ceramic cap to ground; forms internal low-pass filter that reduces reference noise-key to achieving 50 µV output noise. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Element Architecture | Enables constant quiescent current across 0–150 mA load and ultra-low dropout (300 mV @ 150 mA), unlike PNP-based LDOs whose IQ rises with load. |
| Integrated Bypass Filter | Internal 1.192-V reference node accessed via BYPASS pin; external 0.01 µF cap creates noise-reduction pole-directly enabling 50 µV RMS output noise. |
| Thermal & Current Protection | Auto-recovering thermal shutdown (165°C trip) and foldback current limit (~0.8 A) prevent damage during overload or high ambient conditions without external circuitry. |
| Logic-Controlled Shutdown | EN pin reduces total device current to ≤1 µA-critical for energy harvesting nodes and battery-backed real-time clocks requiring nanoampere standby. |
| Reverse-Current Protection | PMOS body diode conducts safely from OUT to IN during input brownout-eliminates need for external blocking diode in backup-supply applications. |
Applications
| Wireless Sensor Node Power Rail | Portable Medical Instrument Bias |
|---|---|
Use Scenario: Powering ultra-low-power sub-GHz transceiver (e.g., CC1310) and 16-bit SAR ADC in a battery-operated environmental monitor. IC Role / Device Role / Timing Role: Primary 2.5-V analog/RF rail regulator with low noise and fast transient response. Use Value: 50 µV noise prevents SNR degradation in ADC measurements; 300 mV dropout extends usable battery range by >12% versus standard LDOs. |
Use Scenario: Supplying precision op-amps and reference buffers in handheld ECG front-end with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise, low-drift analog supply regulator with shutdown for intermittent measurement cycles. Use Value: Stable 2.5 V ±2.5% and <1 µA shutdown current enable 30-day battery life; BYPASS-filtered noise avoids false arrhythmia detection. |
| Industrial PLC I/O Module | Automotive Infotainment Audio Codec |
Use Scenario: Providing isolated 2.5-V bias for 24-bit delta-sigma ADCs in DIN-rail-mounted process controllers. IC Role / Device Role / Timing Role: High-temperature-stable local regulator for analog signal conditioning stage. Use Value: Guaranteed operation to 125°C junction temperature eliminates derating concerns; thermal protection prevents field failure under sustained overload. |
Use Scenario: Supplying clean 2.5-V reference voltage to audio DAC and headphone amplifier in head unit subsystem. IC Role / Device Role / Timing Role: Low-noise auxiliary LDO decoupling switching supply ripple from sensitive audio paths. Use Value: 60 dB PSRR at 1 kHz suppresses DC-DC converter switching noise; SOT-23 size fits dense infotainment PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78225DRVR | Lower IQ (0.5 µA typ), same 2.5 V output, but higher dropout (400 mV @ 150 mA) and no BYPASS pin-no integrated noise filter. | Better for ultra-long-life coin-cell applications; unsuitable where 50 µV noise is mandatory (e.g., RF bias). | Select TPS78225DRVR only if nanoampere shutdown dominates over noise performance. |
| MCP1703T-2502E/MB | 2.5 V fixed, 250 mA output, 6 µA IQ, but 600 mV dropout @ 250 mA and 90 µV noise-higher noise, larger dropout, different package (SOT-23-5 compatible but not identical pinout). | Higher current capability suits more demanding loads; higher noise limits use in precision analog. | Choose MCP1703T-2502E/MB when >150 mA is required and 90 µV noise is acceptable. |
Compared with TPS76425DBVR, TPS78225DRVR offers superior shutdown current but sacrifices noise performance and dropout; MCP1703T-2502E/MB provides higher current and lower IQ but increases dropout and noise-making TPS76425DBVR optimal for 2.5-V, low-noise, moderate-current portable analog rails.
Availability
TPS76425DBVR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical instruments, industrial PLC I/O modules, and automotive infotainment audio codecs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS76425DBVR 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 digital signal technologies-serving industrial, automotive, and communications markets with high-reliability components.
The TPS764xx series was designed specifically for battery-powered portable electronics needing ultra-low noise, low dropout, and micropower operation-targeting laptops, cellular handsets, and handheld instrumentation where efficiency and signal integrity are critical.
FAQ
What is the maximum input voltage rating for the TPS76425DBVR?
The absolute maximum input voltage for the TPS76425DBVR is 10 V. Exceeding this value-even momentarily-may cause permanent damage. For reliable operation, the recommended input voltage range is 2.7 V to 10 V, with minimum VI defined as VO(typ) + 1 V (i.e., 3.5 V for the 2.5-V TPS76425DBVR) or 2.7 V, whichever is greater. This ensures proper regulation and avoids dropout violation.
Does the TPS76425DBVR require an external bypass capacitor, and why?
Yes, the TPS76425DBVR requires a 0.01 µF ceramic capacitor between the BYPASS pin and GND to achieve its specified 50 µV output noise. This capacitor forms a low-pass filter with the internal reference node (1.192 V), suppressing reference noise before it modulates the output. Omitting it degrades noise performance significantly-measurements show >2× increase in RMS noise without the BYPASS cap.
Can the TPS76425DBVR be used without connecting the EN pin?
Yes-the EN pin can be left unconnected or tied directly to IN for always-on operation. Since EN is active-high and has negligible input current (<0.5 µA), floating it is electrically safe and results in normal regulator function. However, tying EN to IN is preferred for robustness against noise-induced shutdown in noisy environments. Do not leave EN floating in high-EMI applications without verification.
What output capacitor is required for stable operation of the TPS76425DBVR?
The TPS76425DBVR requires a minimum 4.7 µF output capacitor with ESR between 0.2 Ω and 10 Ω. Solid tantalum, aluminum electrolytic, or multilayer ceramic capacitors meeting these specs are acceptable. A 4.7 µF/6.3 V X5R ceramic capacitor (e.g., 0805 case) is commonly used. Capacitor selection directly impacts transient response and loop stability-deviating from ESR range risks oscillation or poor load regulation.
Is the TPS76425DBVR pin-compatible with other members of the TPS764xx family?
Yes, all TPS764xx variants-including TPS76425DBVR, TPS76427DBVR, and TPS76433DBVR-share identical 5-pin SOT-23 (DBV) packaging and pinout (IN, GND, EN, OUT, BYPASS). This allows drop-in replacement across output voltages (2.5 V to 3.3 V) without PCB layout changes, provided input voltage and load requirements remain within spec for the selected variant.
TPS76425DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 140 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS76425DBVR FAQ
1.How can I place an order for TPS76425DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76425DBVR 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 TPS76425DBVR reliable?
The price and inventory of TPS76425DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76425DBVR is usually 5 days.
3.What payment methods are accepted for TPS76425DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76425DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76425DBVR?
TPS76425DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76425DBVR 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 TPS76425DBVR?
For technical support, including TPS76425DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76425DBVR requirements.
6.How does Aetrix verify that TPS76425DBVR is sourced from the original manufacturer or authorized distributors?
All TPS76425DBVR 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 TPS76425DBVR meets industry standards.
7.What is the process for return or replacement of TPS76425DBVR?
All TPS76425DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS76425DBVR, 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 TPS76425DBVR part is unused and in its original packaging.
Return procedure for TPS76425DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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