TPS79330DBVR

Texas Instruments TPS79330DBVR – 3.0-V, 200-mA Ultralow-Noise LDO Regulator

Summary and value proposition

The Texas Instruments TPS79330DBVR is a fixed 3.0-V, single-channel, low-dropout (LDO) linear regulator designed to deliver clean, stable power to noise-sensitive circuitry. As part of the TPS793 family, it focuses on ultralow output noise and straightforward enable/shutdown control, making it an excellent fit for RF front ends, precision analog blocks, and post-regulation following a switching converter. Housed in a compact SOT-23-5 (DBV) package and offered in Tape & Reel for automated assembly, the Texas Instruments TPS79330DBVR helps engineers minimize board area while meeting tight noise budgets.

This article consolidates the essential part data for engineers, buyers, and sourcing managers—so you can quickly evaluate fit, plan your BOM, and streamline procurement without bouncing across multiple pages.

Key features and specifications

• Manufacturer/Brand: Texas Instruments
• Series: TPS793
• Category: PMIC – Voltage Regulators – Linear (LDO)
• Output voltage: 3.0 V (fixed)
• Output current: 200 mA
• Output type: Fixed
• Number of outputs: 1
• Enable/shutdown: Yes
• Package: SOT-23-5 (DBV)
• Packaging: Tape & Reel (TR)
• Mounting type: Surface Mount
• Pin count: 5
• Operating temperature (ambient): -40°C to +85°C
• RoHS status: RoHS Compliant; Pb-free

Notes on parameters commonly requested but not included in the provided data:

• Dropout voltage: Not specified in datasheet.
• PSRR and output noise density (quantitative): Not specified in datasheet.
• Recommended input/output capacitor values and ESR range: Not specified in datasheet.
• Quiescent current and shutdown current: Not specified in datasheet.

If your design hinges on any of the above, consult the official TI datasheet for TPS79330 (see Resources).

Where the Texas Instruments TPS79330DBVR fits in your design

The 3.0-V setpoint hits a sweet spot for powering a wide variety of ICs and sub-systems, especially those that demand a quiet rail. Designers typically choose the Texas Instruments TPS79330DBVR for:

• RF VCO/PLL supplies where phase noise and spur performance are sensitive to rail ripple and broadband noise.
• Precision analog rails that benefit from ultralow regulator noise, such as ADC/DAC references, high-performance op-amps, or sensor front ends.
• Post-regulation after a DC/DC converter to clean up switching ripple for mixed-signal subsystems.
• Portable and battery-powered equipment that needs a small footprint and an enable pin for aggressive power management.

The enable/shutdown input gives you flexibility in power sequencing and dynamic power control—reducing standby power and aligning rail timing with the rest of your system.

Packaging, assembly, and footprint considerations

• Package: SOT-23-5 (DBV) — a compact, industry-standard footprint favored for space-constrained designs and high-density placement.
• Delivery: Tape & Reel (TR) — supports automated pick-and-place, minimizing handling and ensuring repeatable assembly quality.
• Mounting: Surface Mount — compatible with standard reflow processes.

Practical layout guidance (follow the TI datasheet for definitive requirements):

• Keep input and output capacitors as close to the device pins as possible to reduce loop area and improve stability and noise performance.
• Use a solid, low-impedance ground return for the regulator and load.
• Route sensitive analog/RF nodes away from the regulator’s input supplies and any switching nodes in the vicinity.

Application highlights and use cases

• Noise-sensitive analog rails: Precision converters, low-noise op-amps, and reference circuits benefit from a low-ripple 3.0-V rail.
• RF VCO/PLL supplies: Ultralow-noise regulation helps maintain spectral purity and mitigate phase noise degradations.
• Portable and battery-powered equipment: Small SOT-23-5 footprint and enable control support compact, energy-efficient designs.
• Post-regulation for switching supplies: Pair a switching converter for efficiency with TPS79330DBVR for noise cleanup near point-of-load.

Design patterns you’ll often see:

• “DC/DC + LDO” cascaded rails: Use a higher-efficiency buck converter upstream and the Texas Instruments TPS79330DBVR for final-stage noise filtering at 3.0 V.
• Gated analog domains: Drive the EN pin from a microcontroller or power sequencer to enable analog/RF sections only when needed.

System-level design considerations

Even though the core specifications are straightforward, a few system-level checks will help ensure first-pass success:

• Headroom and dropout: Confirm that your minimum input voltage maintains sufficient headroom above 3.0 V across load and temperature. If your source can dip near the setpoint, review dropout performance in the TI datasheet. (Dropout voltage: Not specified in datasheet.)
• Power dissipation and thermal: Estimate regulator dissipation using P = (VIN − VOUT) × IOUT. For higher load currents or larger VIN–VOUT deltas, verify junction temperature margins versus your ambient environment (−40°C to +85°C supported). Consider copper area for heat spreading if needed.
• Noise budget: The TPS793 family is positioned for ultralow noise. To maximize performance, place output capacitors close, keep returns short, and avoid sharing noisy ground paths. For quantitative noise density and PSRR data, refer to the TI datasheet. (Quantitative metrics: Not specified in datasheet.)
• Start-up and sequencing: Use the enable pin to coordinate power-up of sensitive analog or RF sections. This can prevent latch-up or out-of-range behavior in downstream ICs during ramp.
• Stability: TI provides guidance on output capacitor value/ESR for loop stability. Always verify against the datasheet and validate with a quick bench check during bring-up. (Capacitor specifics: Not specified in datasheet.)

Lifecycle, supply chain, and replacements

• Lifecycle status: Active (per provided data).
• Availability: Active; available via authorized distributors. Check TI and distributor inventory for current stock and lead times.
• RoHS/Environmental: RoHS Compliant; Pb-free.

Replacement and cross-referencing guidance:

• Within the TPS793 family, other fixed-output variants exist for different voltages. If you need a rail other than 3.0 V, consider a TPS793xx option in the same series. Always verify pin compatibility and electrical characteristics before substitution.
• No qualified alternates are listed in the provided data. If you evaluate drop-in substitutes from other vendors, compare pinouts, enable-pin polarity/thresholds, dropout behavior, stability requirements, and noise/PSRR at your operating frequencies.

Policy reminder from the provided data:

• Verify electrical and pin compatibility before substitution.

Compliance and environmental details

• RoHS: RoHS Compliant; Pb-free.
• Halogen content or additional eco-labels: Not specified in datasheet.
• Operating temperature: −40°C to +85°C (ambient), suitable for many industrial, communications, and consumer deployments.

If your project requires detailed material declarations (MD/IDE) or full substance breakdowns, request compliance documentation from TI or your authorized distributor. (No specific compliance docs were included in the provided data.)

Sourcing and ordering information

• Manufacturer: Texas Instruments
• MPN: TPS79330DBVR
• Series: TPS793
• Category: PMIC – Voltage Regulators – Linear (LDO)
• Package: SOT-23-5 (DBV)
• Packaging: Tape & Reel (TR)
• Mounting: Surface Mount

Ordering tips:

• Confirm the full part number suffix for packaging and shipment quantities (DBV package, Tape & Reel).
• Align the shipment packaging (TR) with your production lot size and feeder setup to minimize changeovers.
• Review lead times early in the project; for production ramps, consider approved second sources or buffer stock strategies to mitigate supply variability.

Pricing and availability notes:

• Pricing varies by quantity and region; see TI and authorized distributors (e.g., Mouser, Digi-Key) for quotes.
• For long-term programs, request forecast-based pricing or supply agreements where appropriate.

Frequently asked questions (FAQs)

• What is the fixed output voltage of TPS79330?

• 3.0 V.

• How much output current can the Texas Instruments TPS79330DBVR supply?

• Up to 200 mA.

• Does the device include an enable/shutdown pin?

• Yes. The device features an enable control input for on/off control and sequencing.

• What package is the Texas Instruments TPS79330DBVR supplied in?

• SOT-23-5 (TI package code DBV), Tape & Reel.

• What is the typical operating temperature range?

• −40°C to +85°C (ambient).

• Is the Texas Instruments TPS79330DBVR RoHS compliant?

• Yes. It is RoHS Compliant and Pb-free.

• Is the output adjustable?

• No. TPS79330DBVR is a fixed 3.0-V output regulator.

• How many outputs does it have?

• One.

• Can I use it to clean up a switching regulator’s output?

• Yes. The part is commonly used for post-regulation to reduce ripple and noise, especially for sensitive analog and RF loads.

• Where can I find detailed electrical characteristics like dropout, PSRR, noise density, and capacitor requirements?

• Consult the TI datasheet for TPS79330. (Specific values are Not specified in datasheet in the provided data.)

Resources

• Product page: https://www.ti.com/product/TPS79330
• Datasheet (TPS79330): https://www.ti.com/lit/gpn/tps79330

If you are designing a platform with multiple rail voltages, browse the broader TPS793 family on the product page to identify additional fixed-output options that share the same compact footprint.

Why choose the Texas Instruments TPS79330DBVR

• Ultralow-noise regulation to support RF and precision analog performance.
• Compact SOT-23-5 (DBV) package for tight layouts and portable devices.
• Enable pin for flexible sequencing and power saving.
• Active lifecycle status with RoHS compliance to ease qualification and long-term sourcing.

For engineers who need a reliable, low-noise 3.0-V rail in a very small package, the Texas Instruments TPS79330DBVR is a strong, production-ready choice that simplifies layout, supports efficient assembly, and meets common compliance requirements without adding complexity to your BOM.