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Texas Instruments TPS79330DBVRG4
- Part No.:
- TPS79330DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS79330DBVRG4.pdf
- Description:
- IC REG LINEAR 3V 200MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
TPS79330DBVRG4 from Texas Instruments is a fixed-output, 3.0 V, 200-mA low-dropout linear regulator with enable and noise-reduction pin, designed for RF and noise-sensitive analog circuits. It delivers 112 mV dropout at 200 mA, 70 dB PSRR at 10 kHz, 33 µVRMS output noise (with 0.01 µF CNR), and stable operation with only a 2.2-µF ceramic output capacitor - used in cellular transceivers, ADC power rails, and portable RF front-ends.
For engineers reviewing the TPS79330DBVRG4 datasheet, TPS79330DBVRG4 pinout, TPS79330DBVRG4 application, or TPS79330DBVRG4 equivalent, this page provides verified specifications, SOT-23-5 pin mapping, real-world RF/audio use cases, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The TPS79330DBVRG4 uses a PMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection via an integrated body diode. Its proprietary BiCMOS process achieves 170 µA typical quiescent current and sub-1 µA shutdown current, while the dedicated NR pin accepts an external capacitor to suppress bandgap noise and improve PSRR above 10 kHz.
It operates across –40°C to 125°C junction temperature, supports input voltages from 4.0 V to 5.5 V (min VIN = VOUT + VDO), and integrates UVLO (2.25 V rising threshold), thermal shutdown (~165°C), and foldback current limiting (~400 mA). No external feedback resistors are required - output is factory-trimmed to 3.0 V ±2%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2% (factory-trimmed fixed output; no external resistors needed) |
| Max Output Current | 200 mA continuous; supports transient peaks without regulation loss |
| Dropout Voltage | 112 mV at 200 mA (enables operation from 4.0 V input down to 3.112 V) |
| PSRR | 70 dB at 10 kHz (rejects switching noise from adjacent DC/DC converters) |
| Output Noise | 33 µVRMS (100 Hz–100 kHz, with 0.01 µF CNR; critical for VCO/ADC stability) |
| Quiescent Current | 170 µA typical (low bias current extends battery life in always-on sensor nodes) |
| Shutdown Current | <1 µA (EN pin disables regulator; essential for deep-sleep power modes) |
| Stability | Guaranteed with ≥2.2 µF X7R/X5R ceramic output capacitor (no ESR constraints) |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm max height, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Regulator input supply | Accepts 4.0–5.5 V; must be ≥ VOUT + VDO for regulation; internal UVLO triggers below 2.25 V |
| GND (Pin 2) | Power ground reference | Low-impedance return path for IN, OUT, EN, and NR; requires solid PCB ground plane |
| EN (Pin 3) | Enable control input | Active-high logic; ≥1.7 V enables regulator; ≤0.7 V disables (IEN < ±1 µA) |
| NR (Pin 4) | Noise reduction filter node | Connects to 0.001–0.1 µF capacitor to reduce internal bandgap noise and boost PSRR >10 kHz |
| OUT (Pin 5) | Regulated output | Delivers stable 3.0 V; requires ≥2.2 µF ceramic capacitor (X7R/X5R) for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 33 µVRMS output noise (100 Hz–100 kHz) enables clean power for VCOs and high-resolution ADCs |
| High-frequency PSRR | 70 dB at 10 kHz ensures immunity to noise from buck converters and digital clocks |
| Fast startup time | 50 µs (with 0.001 µF CNR) supports rapid wake-up in duty-cycled IoT sensors |
| Minimal external components | Operates with only IN, OUT, and CNR capacitors - no feedback resistors or compensation networks |
| Thermal & current protection | Integrated foldback current limit (~400 mA) and thermal shutdown (~165°C) prevent damage under fault conditions |
| Low-IQ with enable | 170 µA operating IQ, <1 µA shutdown current - ideal for battery-powered standby applications |
Applications
| Cellular Transceiver Power | High-Resolution ADC Reference Rail |
|---|---|
|
Use Scenario: Powers RF transceiver ICs (e.g., LTE/WCDMA front-end modules) in handheld radios where supply ripple directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Primary LDO supplying VCC_RF and VCC_VCO rails; rejects switching noise from PMIC DC/DC stages. Use Value: 70 dB PSRR at 10 kHz and 33 µVRMS noise ensure <−80 dBc phase noise floor and <2.5% EVM degradation at 2.1 GHz. |
Use Scenario: Supplies reference voltage and analog core of 16-bit SAR ADCs in portable test equipment requiring minimal code spread. IC Role / Device Role / Timing Role: Low-noise post-regulator for ADC AVDD; decouples noisy digital supply domains. Use Value: 33 µVRMS noise contributes <0.5 LSB error in 16-bit full-scale range (±2.5 V), preserving ENOB >14.2 bits. |
| Bluetooth Audio SoC Core Supply | Portable Medical Sensor Signal Chain |
|
Use Scenario: Powers the 3.0 V core rail of Bluetooth LE audio SoCs (e.g., CSR8675) in true wireless stereo earbuds with tight thermal envelopes. IC Role / Device Role / Timing Role: Main system LDO delivering regulated 3.0 V to CPU, DSP, and BLE radio subsystems. Use Value: 112 mV dropout allows operation down to 3.112 V input - extending usable battery range from Li-ion 4.2 V → 3.3 V. |
Use Scenario: Powers low-noise instrumentation amplifiers and sigma-delta ADCs in wearable ECG/PPG modules where supply-induced artifacts mimic physiological signals. IC Role / Device Role / Timing Role: Dedicated analog supply LDO isolating sensitive biopotential signal chain from digital noise. Use Value: NR pin filtering reduces 1/f noise contribution, lowering baseline wander <1 µVpp over 0.05–40 Hz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79330DBVR | Same silicon, identical electrical specs; G4 suffix denotes enhanced green (lead-free, NiPdAu) plating per TI specification | No functional difference; both qualified for industrial temp range (–40°C to 125°C) | Select TPS79330DBVRG4 when RoHS-compliant finish and TI's enhanced green standard are required. |
| MCP1703T-3002E/MB | 3.0 V fixed, 250 mA, 600 mV dropout at 250 mA; 65 dB PSRR at 10 kHz; requires 1 µF min COUT; no NR pin | Lacks noise-reduction capability and has higher dropout - unsuitable for RF/VCO apps below 3.6 V input | Choose only for cost-sensitive, non-RF applications where 600 mV dropout and 65 dB PSRR are acceptable. |
Compared with TPS79330DBVRG4, the TPS79330DBVR offers identical performance but different surface finish compliance, while the MCP1703T-3002E/MB trades noise/PSRR/dropout performance for lower cost and wider availability - making it viable only in non-critical analog or digital logic rails.
Availability
TPS79330DBVRG4 is available at Aetrix Electronics and suitable for cellular transceivers, high-resolution ADCs, Bluetooth audio SoCs, and portable medical sensors requiring stable component supply across extended temperature and long production lifecycles.
Supply support for TPS79330DBVRG4 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 headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and DLP technology for industrial, automotive, and consumer markets.
The TPS793 family was engineered specifically for noise-sensitive, battery-powered RF and precision analog systems - prioritizing ultralow noise, high PSRR, fast transient response, and minimal external components in ultra-small packages.
FAQ
What is the minimum input voltage required for TPS79330DBVRG4 to maintain regulation?
The TPS79330DBVRG4 requires VIN ≥ VOUT + VDO. With a nominal 3.0 V output and 112 mV dropout at 200 mA, the minimum input is 3.112 V. Per datasheet Section 6.3, the absolute minimum VIN is 4.0 V for guaranteed 3.0 V operation across temperature and load - due to VDO increase at cold temperatures and higher loads. Below 4.0 V, regulation may degrade near thermal limits.
Does TPS79330DBVRG4 require an external feedback resistor network?
No. The TPS79330DBVRG4 is a fixed-output variant with factory-trimmed 3.0 V regulation. It does not include an FB pin and requires no external resistors. Only three external components are mandatory: input capacitor (≥0.1 µF), output capacitor (≥2.2 µF ceramic), and optional noise-reduction capacitor on the NR pin (0.001–0.1 µF).
Can TPS79330DBVRG4 be used with a 1-µF output capacitor?
No. The TPS79330DBVRG4 is specified and tested for stability with ≥2.2 µF ceramic output capacitance (X7R/X5R dielectric). Using 1 µF violates the minimum COUT requirement and risks oscillation or poor transient response - especially under 200 mA load steps. TI's datasheet Figure 19 confirms instability region begins below 2.2 µF for all ESR values.
What is the purpose of the NR pin on TPS79330DBVRG4, and what capacitor value is recommended?
The NR (Noise Reduction) pin connects to an external capacitor that filters internal bandgap reference noise, improving PSRR above 10 kHz and reducing output voltage noise. For the TPS79330DBVRG4, TI recommends 0.01 µF (10 nF) for optimal 33 µVRMS noise performance. Values from 0.001 µF to 0.1 µF are supported, with lower values yielding faster startup and higher values further suppressing low-frequency noise.
Is TPS79330DBVRG4 compatible with lead-free reflow profiles?
Yes. The TPS79330DBVRG4 uses TI's enhanced green (G4) finish - matte tin with NiPdAu underplate - qualified for standard Pb-free reflow profiles (JEDEC J-STD-020, peak 260°C). The SOT-23-5 package is rated for MSL-1 (unlimited floor life) when sealed per JEDEC J-STD-033, and its 1.0 mm max height supports fine-pitch automated assembly.
TPS79330DBVRG4 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 43dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS79330DBVRG4 FAQ
1.How can I place an order for TPS79330DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS79330DBVRG4 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 TPS79330DBVRG4 reliable?
The price and inventory of TPS79330DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS79330DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS79330DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS79330DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS79330DBVRG4?
TPS79330DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS79330DBVRG4 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 TPS79330DBVRG4?
For technical support, including TPS79330DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS79330DBVRG4 requirements.
6.How does Aetrix verify that TPS79330DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS79330DBVRG4 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 TPS79330DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS79330DBVRG4?
All TPS79330DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS79330DBVRG4, 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 TPS79330DBVRG4 part is unused and in its original packaging.
Return procedure for TPS79330DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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