LP3985ITL-4.8 Equivalent & Substitute Parts

Part Overview

The LP3985ITL-4.8 is a linear voltage regulator IC from Texas Instruments, designed for positive fixed output applications. This device delivers 150mA output current at a fixed 4.8V output with a maximum dropout voltage of 0.1V at rated load. The part integrates over-current, over-temperature, and short-circuit protection features, making it suitable for low-power regulated supply applications in portable and embedded systems.

The main part number LP3985ITL-4.8 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and improved compliance certifications.

Substiute Parts

LP3985ITL-4.8

Texas InstrumentsIn Stock: 1093LP3985ITL-4.8 Datasheet

Current PartRFQ

LP3985ITL-4.8/NOPB

Texas InstrumentsIn Stock: 2164LP3985ITL-4.8/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP3985ITL-4.8 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 4.8V fixed output
• Output current capability: 150mA minimum
• Maximum input voltage: 6V
• Dropout voltage performance: 0.1V @ 150mA
• Package type: 5-DSBGA (1.41x1.08)
• Mounting configuration: Surface Mount
• Protection features: Over-current, over-temperature, and short-circuit protection
• Operating temperature range: -40°C ~ 125°C
• Quiescent current: 150 µA
• PSRR specification: 50dB ~ 40dB (1kHz ~ 10kHz)

The substitute part LP3985ITL-4.8/NOPB maintains identical electrical specifications and mechanical compatibility while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LP3985ITL-4.8/NOPB is the direct substitute for the obsolete LP3985ITL-4.8. Both parts share identical electrical performance and mechanical compatibility, ensuring drop-in replacement capability in existing designs.

The substitute part offers significant advantages in terms of product lifecycle and compliance:

• Active product status ensures continued manufacturing support and availability
• ROHS3 compliance meets current environmental and regulatory requirements
• Moisture Sensitivity Level 1 (Unlimited) provides superior handling and storage flexibility compared to MSL 3 (168 Hours)
• Tape & Reel packaging supports high-volume production workflows

For new designs or redesigns of existing products using the obsolete LP3985ITL-4.8, the LP3985ITL-4.8/NOPB is the appropriate selection. For legacy systems requiring the original Cut Tape packaging format, the substitute remains electrically and mechanically equivalent despite the packaging configuration difference.

Frequently Asked Questions (FAQ)

Q: Can LP3985ITL-4.8/NOPB replace LP3985ITL-4.8 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The substitute maintains the same output voltage (4.8V), output current (150mA), dropout voltage (0.1V @ 150mA), package type (5-DSBGA), and all protection features. The primary differences are product status (Active vs. Obsolete), compliance certifications, and packaging format (Tape & Reel vs. Cut Tape).

Q: What is the significance of the RoHS and MSL differences?

A: The substitute part LP3985ITL-4.8/NOPB is ROHS3 compliant, meeting current environmental regulations for restricted substances. The improved Moisture Sensitivity Level (MSL 1 vs. MSL 3) means the substitute can be stored indefinitely without baking, whereas the original part requires baking after 168 hours of exposure to ambient humidity. These differences simplify supply chain management and reduce manufacturing risk.

Q: Are there any package compatibility considerations?

A: Both parts use the identical 5-DSBGA (1.41x1.08) package with Surface Mount configuration. PCB footprints, solder reflow profiles, and assembly processes are fully compatible. The packaging format difference (Cut Tape vs. Tape & Reel) affects only the delivery and handling method, not the component itself.

Q: What is the /NOPB designation?

A: The /NOPB suffix indicates "No Plumbum" (lead-free) packaging, confirming RoHS compliance and the absence of lead in the solder and component materials.

Q: Is the substitute part suitable for high-volume production?

A: Yes. The Tape & Reel packaging of LP3985ITL-4.8/NOPB is optimized for automated assembly and high-volume manufacturing. The active product status ensures consistent availability and supply chain reliability for production programs.