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Texas Instruments TPS76301DBVRG4
- Part No.:
- TPS76301DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76301DBVRG4.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,355
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Product details
Overview
TPS76301DBVRG4 from Texas Instruments is a 150mA, low-dropout linear voltage regulator with fixed 3.0V output, 2.7V–10V input range, ±1.0% output accuracy (new chip), 175mV typical dropout at 150mA, and active over-shoot pulldown protection - used in battery-powered smoke detectors, thermostats, and PIR motion sensors.
For engineers reviewing the TPS76301DBVRG4 datasheet, TPS76301DBVRG4 pinout, TPS76301DBVRG4 application, or TPS76301DBVRG4 equivalent, key selection criteria include quiescent current (65μA at zero load), enable logic thresholds (0.15V low / 0.85V high), thermal shutdown, and SOT-23-5 package compatibility for space-constrained IoT sensor nodes.
Technical Context
The TPS76301DBVRG4 implements a PMOS pass transistor architecture enabling ultra-low dropout and stable operation with ceramic output capacitors ≥1µF. Its internal soft-start reduces inrush current during power-up, allowing smaller input capacitance without compromising startup integrity.
It features a dedicated enable pin (EN) with precise voltage thresholds (0.15V max low, 0.85V min high), logic-controlled sleep mode reducing standby current to ≤1.25μA, and integrated thermal shutdown + overcurrent limiting - all operating across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1.0% (typical, new chip) - ensures tight regulation for 3.3V-tolerant microcontrollers and analog sensors. |
| Max Output Current | 150mA - sufficient for low-power MCU cores, RF transceivers, and sensor signal chains in portable devices. |
| Dropout Voltage | 175mV (typical) at 150mA - enables regulation from 3.175V input, critical for single-cell Li-ion or 3.3V rail backup. |
| Quiescent Current | 65μA at IOUT = 0mA - minimizes battery drain in always-on monitoring applications like smoke detectors. |
| Enable Thresholds | EN low ≤0.15V, EN high ≥0.85V - compatible with 1.8V/3.3V GPIOs and supports direct connection to microcontroller wake signals. |
| Operating Temp | –40°C to +125°C junction - validated for industrial and automotive cabin environments without derating. |
| Thermal Resistance | RθJA = 178.6°C/W (SOT-23-5) - allows ~350mW power dissipation at 25°C ambient before reaching 125°C junction limit. |
Pinout & Package
TPS76301DBVRG4 is housed in a 5-pin SOT-23 (DBV) package, 2.9mm × 2.8mm footprint, with exposed pad not electrically connected. Thermal performance optimized for PCB copper pour on GND-connected pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply | Accepts 2.7V–10V; requires ≥0.47µF ceramic input capacitor close to pin for stability. |
| 2 - GND | Ground reference | Primary return path for load and quiescent current; must connect directly to low-impedance ground plane. |
| 3 - EN | Enable control | Active-high logic input; drives high (>0.85V) to enable regulator, low (<0.15V) to reduce IQ to ≤1.25μA. |
| 4 - NC | No connection | Internally unconnected; must remain floating or tied to GND per layout guidelines - not FB (adjustable version only). |
| 5 - OUT | Regulated output | Delivers 3.0V ±1.0%; requires ≥1µF (≥2.2µF recommended) ceramic output capacitor with ESR <1Ω. |
Key Features
| Feature | Design Value |
|---|---|
| Active over-shoot pulldown | Clamps output voltage during fast input dropouts to prevent downstream IC latch-up or reset glitches. |
| Internal soft-start | Controls output ramp rate to limit inrush current, eliminating need for external soft-start circuitry or oversized input caps. |
| Logic-enable sleep mode | Reduces total system quiescent current to ≤1.25μA when disabled - extends shelf life of battery-powered security sensors. |
| Stable with ceramic capacitors | Supports 1µF–220µF ceramic output caps without requiring ESR-based damping, simplifying BOM and layout. |
| Integrated protection | Thermal shutdown and foldback current limiting prevent damage during sustained overload or ambient overheating. |
Applications
| Smoke Detector Power Supply | Smart Thermostat Core Rail |
|---|---|
|
Use Scenario: Primary 3.0V rail for CO sensor interface, microcontroller, and wireless transceiver in battery-operated residential smoke alarms. IC Role / Device Role / Timing Role: LDO regulator providing clean, stable 3.0V from 3.6V Li-ion cell with minimal quiescent draw between sensor reads. Use Value: 65μA IQ extends 10-year battery life; 175mV dropout maintains regulation down to 3.175V cell voltage. |
Use Scenario: Main 3.0V supply for ARM Cortex-M0+ MCU, temperature/humidity sensor, and BLE radio in programmable HVAC controllers. IC Role / Device Role / Timing Role: Low-noise, enable-controlled power source synchronized with system sleep/wake cycles. Use Value: EN pin allows MCU to disable regulator during deep-sleep, cutting system IQ to sub-μA levels without external FET. |
| PIR Motion Sensor Node | Electricity Meter Auxiliary Rail |
|
Use Scenario: Powering passive infrared (PIR) signal conditioning, comparator, and wake-up controller in occupancy-sensing lighting systems. IC Role / Device Role / Timing Role: Always-on LDO delivering precise 3.0V to analog front-end while supporting rapid wake-from-sleep transitions. Use Value: Active over-shoot pulldown prevents false triggers during battery insertion or brownout events. |
Use Scenario: Isolated 3.0V auxiliary supply for metrology ADC, real-time clock, and tamper-detection circuitry in Class 0.5 electricity meters. IC Role / Device Role / Timing Role: High-accuracy, thermally robust regulator maintaining ±1.0% output across –25°C to +70°C meter enclosure temperatures. Use Value: RθJA = 178.6°C/W and 125°C max TJ ensure reliability under continuous 150mA load in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330DBVR | Same family, identical pinout and specs; G4 suffix denotes RoHS-compliant, green packaging - no electrical difference. | No functional difference; both qualified for same industrial temperature range and applications. | Select TPS76330DBVR if RoHS compliance documentation is required; otherwise TPS76301DBVRG4 is functionally identical. |
| MCP1700T-3002E/TT | 150mA, 3.0V fixed, but higher dropout (600mV @ 150mA), higher IQ (1.6μA), no EN pin, SOT-23-3 package. | Lacks enable control and over-shoot pulldown; suitable only for always-on, non-critical applications with ample headroom. | Choose only if board space is constrained to 3-pin footprint and enable functionality is unnecessary. |
Compared with TPS76301DBVRG4, TPS76330DBVR offers identical performance with updated environmental compliance, while MCP1700T-3002E/TT trades enable control, lower dropout, and pulldown protection for reduced pin count and cost - making it viable only where those features are omitted by design.
Availability
TPS76301DBVRG4 is available at Aetrix Electronics and suitable for smoke detectors, smart thermostats, and PIR motion sensors requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS76301DBVRG4 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 LDO design expertise and broad industrial qualification.
The TPS763 family was engineered for ultra-low-power, space-constrained applications such as battery-operated safety and environmental sensors - prioritizing quiescent current, dropout, and enable control in miniature SOT-23 packages.
FAQ
What is the output voltage tolerance of the TPS76301DBVRG4 over temperature and load?
The TPS76301DBVRG4 delivers 3.0V output with ±1.0% typical accuracy across –40°C to +125°C junction temperature and 1mA–150mA load current (new chip specification). This is confirmed in Section 5.5 of the datasheet under "VOUT Output voltage TPS76301 (for new chip)" with test conditions including TJ = 25°C and VIN = VOUT(nom) + 1.0V.
Does the TPS76301DBVRG4 require an external feedback resistor network?
No, the TPS76301DBVRG4 is a fixed-output variant - pin 4 is NC (no connection), not FB. The feedback divider is internal; no external resistors are needed. Only adjustable versions (e.g., TPS76333) use the FB pin, and those have different part numbers and pin functions.
What is the minimum input capacitance required for stable operation of the TPS76301DBVRG4?
The TPS76301DBVRG4 requires a minimum 0.47µF ceramic input capacitor placed close to the IN and GND pins. This value is specified in Section 5.3 "Recommended Operating Conditions" for new chips and ensures stability during transient load steps and line regulation.
Can the TPS76301DBVRG4 be used with a 1µF output capacitor?
Yes - the TPS76301DBVRG4 is stable with output capacitance as low as 1µF (ceramic, ESR <1Ω), per Section 5.3. However, 2.2µF is recommended to improve PSRR and transient response, especially under dynamic loads up to 150mA.
What protection features are integrated into the TPS76301DBVRG4?
The TPS76301DBVRG4 integrates thermal shutdown, overcurrent limiting (foldback), and active over-shoot pulldown protection. These are explicitly listed in Section 1 "Features" and verified in Sections 5.1 (Absolute Maximum Ratings) and 5.5 (Electrical Characteristics) for the new chip revision.
TPS76301DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 6.5V
- Voltage Dropout (Max):
- -
- 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
TPS76301DBVRG4 FAQ
1.How can I place an order for TPS76301DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76301DBVRG4 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 TPS76301DBVRG4 reliable?
The price and inventory of TPS76301DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76301DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS76301DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76301DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76301DBVRG4?
TPS76301DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76301DBVRG4 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 TPS76301DBVRG4?
For technical support, including TPS76301DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76301DBVRG4 requirements.
6.How does Aetrix verify that TPS76301DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS76301DBVRG4 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 TPS76301DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS76301DBVRG4?
All TPS76301DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76301DBVRG4, 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 TPS76301DBVRG4 part is unused and in its original packaging.
Return procedure for TPS76301DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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