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Texas Instruments TPS76333DBVRG4
- Part No.:
- TPS76333DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76333DBVRG4.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
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Product details
Overview
TPS76333DBVRG4 from Texas Instruments is a fixed-output 3.3V, 150mA low-dropout linear voltage regulator in a 5-pin SOT-23 package, featuring ±1.5% output accuracy across line/load/temperature, 175mV typical dropout at 150mA, and active overshoot pulldown protection - designed for battery-powered smoke detectors, thermostats, and PIR motion sensors where stable low-quiescent-power regulation is critical.
For engineers reviewing the TPS76333DBVRG4 datasheet, TPS76333DBVRG4 pinout, TPS76333DBVRG4 application, or TPS76333DBVRG4 equivalent, this page delivers verified electrical specs, thermal performance data, enable-controlled sleep mode behavior (1μA max standby), and real-world transient response characteristics essential for low-power embedded system design and BOM validation.
Technical Context
The TPS76333DBVRG4 implements a PMOS pass transistor architecture enabling ultra-low dropout voltage and high PSRR (58dB at 1kHz) with minimal external capacitance - requiring only 1µF input and 2.2µF output ceramic capacitors. Its internal soft-start reduces inrush current during power-up, easing input supply stress.
It integrates thermal shutdown, overcurrent limiting, and logic-enabled EN pin control (0.15V low threshold, 0.85V min high threshold for new chip revision), supporting reliable operation from –40°C to +125°C junction temperature with RθJA = 178.6°C/W in the DBV package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.5% across line/load/temperature - ensures compatibility with 3.3V digital logic rails without external feedback components. |
| Max Output Current | 150mA continuous - sufficient for microcontrollers, sensors, and RF transceivers in compact IoT endpoints. |
| Dropout Voltage | 175mV typical at 150mA - enables regulation from 3.475V input, extending battery runtime in single-cell Li-ion or dual-cell alkaline systems. |
| Quiescent Current | 65μA typical at zero load; 765μA at 150mA - balances ultra-low standby power with efficient full-load operation. |
| Enable Threshold | EN high ≥0.85V, low ≤0.15V - compatible with 1.8V/3.3V GPIOs and supports direct tie-to-VIN if unused. |
| PSRR | 58dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Operating Temp | –40°C to +125°C junction - qualified for industrial and automotive cabin-adjacent applications. |
Pinout & Package
TPS76333DBVRG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with exposed pad not electrically connected. Thermal resistance is RθJA = 178.6°C/W, optimized for PCB copper pour on GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply | Accepts 2.7V–10V; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 - GND | Ground reference | Primary return path for load and quiescent current; must connect directly to low-impedance PCB ground plane. |
| 3 - EN | Enable control | Active-high logic input; drives device ON when ≥0.85V, OFF when ≤0.15V; draws <0.8μA when high. |
| 4 - NC/FB | No connection | Not bonded internally for fixed-output TPS76333; left unconnected per datasheet guidance. |
| 5 - OUT | Regulated output | Delivers 3.3V; requires ≥2.2µF ceramic capacitor to GND for loop stability and load transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Active overshoot pulldown | Prevents output voltage spike during fast load release - eliminates need for external clamping diodes in sensor interface circuits. |
| Logic-enabled sleep mode | Reduces quiescent current to ≤1μA at TJ = 25°C - extends shelf life and battery life in always-on monitoring devices. |
| Internal soft-start | Gradually ramps output voltage at power-up - avoids inrush current peaks that could trip upstream current limits or cause brownouts. |
| Thermal & overcurrent protection | Auto-recovering shutdown at >150°C junction or >1.05A short-circuit - ensures robustness in unattended field deployments. |
| Low-noise operation | 165µVRMS output noise (300Hz–50kHz) - suitable for analog sensor signal chains and precision ADC references. |
Applications
| Smoke Detector Power Supply | Smart Thermostat MCU Core Rail |
|---|---|
|
Use Scenario: Powers microcontroller, CO sensor, and wireless transceiver in battery-operated residential smoke alarms with 10-year shelf life requirements. IC Role / Device Role / Timing Role: Primary 3.3V LDO delivering regulated rail to MCU and analog front-end; EN pin controlled by wake-up timer. Use Value: 65μA quiescent current and 1μA shutdown enable multi-year battery life; 175mV dropout allows operation down to 3.475V input from aging alkaline cells. |
Use Scenario: Supplies 3.3V core voltage to ARM Cortex-M based thermostat controller managing HVAC cycles, display, and BLE connectivity. IC Role / Device Role / Timing Role: Main system regulator with EN tied to system power manager; handles dynamic load steps from display backlight and radio bursts. Use Value: 58dB PSRR at 1kHz rejects noise from switching buck converter powering other subsystems; 150mA capacity covers peak BLE transmit current. |
| PIR Motion Sensor Node | Electricity Meter Auxiliary Rail |
|
Use Scenario: Provides clean 3.3V supply to PIR sensor IC, signal conditioning op-amps, and sub-GHz RF transmitter in energy-harvesting or coin-cell-powered occupancy sensors. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator enabling duty-cycled operation - powers circuitry only during detection windows. Use Value: 165µVRMS output noise prevents false triggers in high-gain analog paths; active pulldown prevents false wake-ups from load transients. |
Use Scenario: Generates isolated 3.3V rail for metrology ADC, real-time clock, and secure element in Class 0.5 electricity meters operating continuously for 15+ years. IC Role / Device Role / Timing Role: Secondary LDO fed from isolated DC/DC; maintains regulation under wide input voltage swings from meter's auxiliary winding. Use Value: ±1.5% output accuracy ensures consistent ADC reference scaling across temperature; 125°C max junction rating supports sealed transformer-coupled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333DBVR | Same silicon, no G4 suffix - RoHS-compliant but lacks TI's green packaging (halogen-free, matte tin lead finish). | No functional difference; identical electrical specs and thermal performance. | Select TPS76333DBVRG4 for compliance with strict environmental standards (e.g., EU WEEE, China RoHS II). |
| MCP1700T-3302E/TT | 100mA max output, 6μA quiescent current, 350mV dropout at 100mA - lower current capability, lower IQ, higher dropout. | Better suited for ultra-low-power sensor nodes with <100mA loads; insufficient for BLE radio burst currents. | Choose MCP1700T-3302E/TT only when load current never exceeds 100mA and lowest possible IQ is prioritized over headroom. |
Compared with TPS76333DBVR and MCP1700T-3302E/TT, the TPS76333DBVRG4 uniquely balances 150mA delivery, 175mV dropout, and 65μA quiescent current in a standard SOT-23 footprint - making it optimal for space-constrained, battery-powered systems requiring both headroom and efficiency.
Availability
TPS76333DBVRG4 is available at Aetrix Electronics and suitable for smoke detectors, smart thermostats, PIR motion sensors, electricity meters, and cordless power tool battery management systems requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for TPS76333DBVRG4 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 decades of expertise in power management ICs for industrial, automotive, and consumer applications.
The TPS763 family was engineered specifically for cost-sensitive, space-constrained battery-powered systems needing high accuracy, low dropout, and ultra-low quiescent current - targeting safety-critical and long-life IoT endpoints.
FAQ
What is the maximum input voltage rating for the TPS76333DBVRG4?
The TPS76333DBVRG4 supports up to 10V maximum input voltage under recommended operating conditions. Absolute maximum rating is 18V for the new-chip revision (which applies to TPS76333DBVRG4), but sustained operation above 10V is not advised due to thermal and reliability constraints.
Does the TPS76333DBVRG4 require an external feedback resistor network?
No, the TPS76333DBVRG4 is a fixed-output 3.3V regulator; its FB pin is internally connected and the fourth pin is labeled NC (no connection). External resistors are unnecessary and must not be added - doing so may disrupt regulation or damage the device.
What is the minimum output capacitance required for stable operation of the TPS76333DBVRG4?
The TPS76333DBVRG4 requires a minimum 2.2µF ceramic output capacitor with ESR ≤1Ω. The datasheet specifies 2.2µF as the nominal value, and derating must ensure effective capacitance remains ≥1µF at operating bias and temperature - X5R or X7R dielectrics are recommended.
How does the enable (EN) pin behave during power-up and shutdown sequences?
The EN pin of the TPS76333DBVRG4 has a 0.15V low threshold and 0.85V minimum high threshold. When pulled high (≥0.85V), the device starts with internal soft-start; when pulled low (≤0.15V), output shuts down and quiescent current drops to ≤1μA - enabling precise sequencing in multi-rail systems.
Is the TPS76333DBVRG4 pin-compatible with other members of the TPS763 family?
Yes, all TPS763 variants in the DBV (SOT-23-5) package share identical pinout: IN, GND, EN, NC/FB, OUT. However, fixed-output versions like TPS76333DBVRG4 have NC on pin 4, while adjustable versions use FB - mixing them without verifying pin function risks incorrect operation.
TPS76333DBVRG4 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:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 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
TPS76333DBVRG4 FAQ
1.How can I place an order for TPS76333DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76333DBVRG4 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 TPS76333DBVRG4 reliable?
The price and inventory of TPS76333DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76333DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS76333DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76333DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76333DBVRG4?
TPS76333DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76333DBVRG4 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 TPS76333DBVRG4?
For technical support, including TPS76333DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76333DBVRG4 requirements.
6.How does Aetrix verify that TPS76333DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS76333DBVRG4 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 TPS76333DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS76333DBVRG4?
All TPS76333DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76333DBVRG4, 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 TPS76333DBVRG4 part is unused and in its original packaging.
Return procedure for TPS76333DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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