LP5912-0.9DRVR

Texas Instruments LP5912-0.9DRVR low-noise, low-IQ 0.9-V, 500-mA LDO with reverse current protection

The Texas Instruments LP5912-0.9DRVR is a fixed-output, 0.9-V linear regulator designed for engineers who need clean, compact, and efficient point-of-load power. Built on TI’s LP5912 series, this low-noise LDO delivers up to 500 mA while maintaining low quiescent current and providing reverse current protection—all in a tiny 6-pin WSON (DRV) package optimized for surface-mount manufacturing.

Whether you are powering noise-sensitive analog/RF rails or providing a stable supply for digital ICs and sensors, the LP5912-0.9DRVR offers a strong balance of performance and size. With an active lifecycle status and RoHS compliance, it is a dependable choice for new designs as well as for maintaining long-lived industrial platforms.

Why choose the LP5912-0.9DRVR for your design?

• Low-noise LDO architecture supports sensitive analog and RF subsystems.
• Low quiescent current helps extend battery life in portable and battery-powered equipment.
• High PSRR assists with line ripple attenuation for cleaner downstream rails.
• Reverse current protection simplifies power-path design in systems with multiple supplies.
• Compact WSON-6 (DRV) footprint enables tight placement near loads for optimal regulation.
• Fixed 0.9-V output variant streamlines power tree planning for low-voltage logic and sensors.

Key specifications and characteristics

• Manufacturer/Brand: Texas Instruments
• Series: LP5912
• Category: Linear Regulators (LDO)
• Output voltage: 0.9 V (fixed)
• Maximum output current: 500 mA (max)
• Output type: Fixed
• Quiescent current: Low
• Dropout: Low
• Noise: Low-noise LDO
• PSRR: High
• Reverse current protection: Yes
• Package: WSON-6 (DRV)
• Ordering/packaging: Tape & Reel (DRVR)
• Mounting type: Surface mount
• Pin count: 6
• Lifecycle status: Active
• RoHS status: RoHS Compliant

Note on detailed parameters: Numeric values such as input voltage range, dropout voltage at various loads, PSRR magnitude across frequency, and output noise density are not included here. Not specified in datasheet. Refer to the TI datasheet for exact figures and design limits.

Package, assembly, and footprint considerations

• Package code: DRV (WSON-6)
• Delivery: Tape & Reel variant (DRVR) for automated pick-and-place
• Assembly: Standard surface-mount reflow; observe TI’s recommended reflow profile and moisture sensitivity handling per the datasheet
• Thermal: The WSON package includes an exposed thermal pad. For best performance, connect the thermal pad to ground and use multiple thermal vias to a copper plane to reduce thermal impedance. Specific copper area and via guidance are application-dependent; Not specified in datasheet here.

Board layout tips for clean regulation:

• Place input and output capacitors as close to the device pins as possible, with short, wide traces to minimize parasitics.
• Keep the LDO and its return path isolated from noisy digital switching currents where practical.
• Use a solid ground reference beneath the device for stable performance and improved thermal spreading.
• For RF or precision analog rails, route the 0.9-V output away from high di/dt nodes and clock lines, and consider dedicated analog ground stitching where appropriate.

Performance highlights for practical designs

• Low-noise operation: Helps maintain signal integrity for sensitive transceivers, LNAs, ADC/DAC references, image sensors, and precision front-ends.
• High PSRR: Helps suppress upstream ripple, reducing the need for bulky additional filtering on the 0.9-V rail.
• Low quiescent current: Extends battery life in portable equipment by minimizing idle draw.
• Reverse current protection: Protects against backfeeding when the output is driven from another source or during power sequencing events, simplifying multi-rail systems.

Note: Quantitative noise, PSRR, and dropout curves vary with conditions (load, temperature, frequency, and headroom). Not specified in datasheet here. Always consult the TI datasheet for guaranteed limits and typical performance.

Typical applications

• Battery-powered and portable equipment
• Noise-sensitive analog/RF rails where a clean 0.9-V supply is critical
• Point-of-load regulation for digital ICs, ASICs, FPGAs, and sensors that require a tight 0.9-V rail

Example use cases:

• Supplying 0.9-V core logic rails for modern low-power microcontrollers or SoCs
• Providing a quiet post-regulated rail behind a switching converter for RF transceivers
• Powering precision sensors that require a stable, low-ripple 0.9-V supply close to the load

Design-in guidance and best practices

• Input and output capacitors: Use high-quality ceramic capacitors with appropriate voltage ratings and temperature characteristics. Specific capacitance and ESR recommendations are design-dependent; Not specified in datasheet here—refer to the TI datasheet for minimum values and stability criteria.
• Headroom and dropout: Ensure sufficient input headroom for regulation across load current and temperature. Exact dropout voltages are Not specified in datasheet here; consult TI’s curves and tables to set your worst-case budget.
• Load transients: For digital rails with fast load steps, place the LDO close to the load and size local decoupling accordingly. Quantitative transient response data is Not specified in datasheet here.
• Thermal planning: Estimate power dissipation as (VIN – 0.9 V) × IOUT and validate thermal performance with your board’s copper area and airflow. Maximum thermal ratings and junction-to-ambient values are board- and layout-dependent; Not specified in datasheet here.
• Start-up and sequencing: In multi-rail systems, plan sequencing to prevent unintended backfeeding. Reverse current protection assists, but final behavior depends on the broader power architecture; confirm with the datasheet and system testing.

Sourcing, availability, and logistics

• Orderable MPN: LP5912-0.9DRVR
• Package: WSON-6 (DRV), tape-and-reel (DRVR) for high-volume assembly
• Lifecycle: Active, suitable for new designs
• RoHS: RoHS Compliant
• Internal inventory status: 0 units

Procurement notes:

• When planning production, verify lead times with authorized TI distributors or directly with TI.
• If substitutions are considered, verify both electrical and mechanical compatibility against the TI LP5912 datasheet before approving any alternate.

Lifecycle and replacements

• Lifecycle status: Active (per Texas Instruments)
• Official replacements/PCN-based drop-ins: None listed

If you require alternates, evaluate candidates against:

• Output voltage (must be fixed 0.9 V)
• Maximum output current rating (500 mA class)
• Noise performance and PSRR at relevant frequencies
• Reverse current protection behavior
• Package footprint (WSON-6/DRV) and pinout compatibility
• Operating temperature range and protection features

Policy note: Only consider footprint- and spec-compatible alternates after verifying electrical and mechanical compatibility against the TI datasheet.

Compliance and environmental status

• RoHS status: RoHS Compliant
• Additional environmental or material declarations: Not specified in datasheet

For official compliance documentation or material content declarations, consult the TI product page and datasheet resources provided below.

How the LP5912-0.9DRVR simplifies your power tree

• Fixed 0.9-V output removes guesswork for low-voltage rails commonly used in modern digital IC cores.
• Low-noise architecture means you can place it after a DC/DC converter to clean up ripple without resorting to oversized passive filters.
• Reverse current protection reduces risk in systems with multiple sources or rails that may be powered at different times.
• Compact WSON-6 footprint lets you position the LDO at the point of load, minimizing IR drop and improving transient response with short traces.

These traits make the Texas Instruments LP5912-0.9DRVR a practical, low-risk choice for engineers aiming to balance performance, board space, and time-to-market.

Ordering and identification

• Part number: LP5912-0.9DRVR
• Series/Family: LP5912
• Package code: DRV (WSON-6)
• Packaging suffix: DRVR indicates tape-and-reel supply format

If your design requires different fixed voltages, explore other LP5912 series variants on the TI product page. Always confirm pinout, ordering codes, and electrical limits before committing to production.

Specifications summary

• Output voltage: 0.9 V (fixed)
• Output current: 500 mA max
• Output type: Fixed
• Noise: Low-noise LDO (no numeric value provided)
• PSRR: High (no numeric value provided)
• Dropout: Low (no numeric value provided)
• Quiescent current: Low (no numeric value provided)
• Reverse current protection: Yes
• Package: WSON-6 (DRV)
• Mounting: Surface mount
• Pin count: 6
• Packaging: Tape & Reel (DRVR)
• Lifecycle: Active
• RoHS: RoHS Compliant
• Input voltage range: Not specified in datasheet
• Thermal and reliability data: Not specified in datasheet

Resources

• Product page: https://www.ti.com/product/LP5912
• Datasheet: https://www.ti.com/lit/ds/symlink/lp5912.pdf

These resources contain the authoritative and most current specifications, application notes, and packaging details for the LP5912-0.9DRVR.

Frequently asked questions (FAQs)

Q: What is the fixed output voltage of the LP5912-0.9DRVR?
A: 0.9 V.

Q: What package does this device use?
A: A 6-pin WSON (DRV) package, supplied in tape-and-reel (DRVR) for automated assembly.

Q: What is the maximum output current?
A: Up to 500 mA, depending on operating conditions.

Q: Is the LP5912-0.9DRVR RoHS compliant?
A: Yes. RoHS Compliant.

Q: Is the output adjustable?
A: No. This variant provides a fixed 0.9-V output (Output Type: Fixed).

Q: Does it include reverse current protection?
A: Yes. Reverse current protection is included.

Q: What is the input voltage range and dropout voltage?
A: Not specified in datasheet here. Refer to the TI datasheet for exact limits and typical curves.

Q: Are there approved direct replacements or alternates?
A: None are listed. If alternates are needed, verify footprint and key electrical parameters against the TI datasheet before substitution.

Q: What is the mounting type and pin count?
A: Surface mount, 6 pins.

Q: Is this part suitable for battery-powered designs?
A: Yes. The low-IQ and low-noise characteristics make it well-suited for portable and battery-powered equipment.

Final take

If your design needs a compact, quiet, and efficient 0.9-V rail, the Texas Instruments LP5912-0.9DRVR offers an excellent mix of low noise, high PSRR, and low-IQ operation in a tiny WSON-6 footprint. With reverse current protection built in, it simplifies multi-rail power paths and reduces risk during sequencing, making it a practical choice for noise-sensitive analog/RF rails and point-of-load regulation for digital ICs and sensors. For exact electrical limits, stability requirements, and layout recommendations, consult the official TI datasheet and product page linked above.