LP5952LC-1.8 Equivalent & Substitute Parts

Part Overview

The LP5952LC-1.8 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.8V output applications with 350mA current capacity in a 6-USON (2x2) surface mount package. This device is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. The substitute part LP5952LC-1.8/NOPB maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

LP5952LC-1.8

Texas InstrumentsIn Stock: 14495LP5952LC-1.8 Datasheet

Current PartRFQ

LP5952LC-1.8/NOPB

Texas InstrumentsIn Stock: 2358LP5952LC-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LP5952LC-1.8/NOPB qualifies as a parametric equivalent to the LP5952LC-1.8 based on the following criteria:

• Identical output voltage specification: 1.8V fixed
• Identical output current rating: 350mA
• Identical input voltage maximum: 4.5V
• Identical voltage dropout characteristic: 0.25V @ 350mA
• Identical quiescent current: 28 µA
• Identical PSRR performance: 80dB ~ 64dB (10Hz ~ 100kHz)
• Identical operating temperature range: -40°C ~ 85°C
• Identical package and pinout: 6-UFDFN (6-USON 2x2)
• Identical control and protection features: Enable control with Over Current, Over Temperature, Short Circuit, and Under Voltage Lockout protection

The substitution is valid for all applications where the LP5952LC-1.8 was originally specified, with no electrical or mechanical redesign required.

Parameter Comparison

Engineering Selection Recommendations

The LP5952LC-1.8/NOPB is the direct replacement for the obsolete LP5952LC-1.8. Selection of the active substitute part is justified by:

• Product status transition from obsolete to active, ensuring long-term availability and supply chain continuity
• ROHS3 compliance of the substitute part versus non-compliance of the original, meeting current regulatory requirements for new designs and manufacturing
• Identical electrical performance across all specified parameters, eliminating the need for circuit redesign or re-qualification
• Tape & Reel packaging of the substitute part supports automated assembly processes typical in production environments

For applications currently using LP5952LC-1.8, direct substitution with LP5952LC-1.8/NOPB requires no circuit modifications, PCB layout changes, or firmware updates.

Frequently Asked Questions (FAQ)

Q: Can LP5952LC-1.8/NOPB be used as a direct replacement for LP5952LC-1.8?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including output voltage, current rating, dropout voltage, quiescent current, PSRR, operating temperature range, and package type. No circuit modifications are required.

Q: What is the difference between LP5952LC-1.8 and LP5952LC-1.8/NOPB?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), and packaging format (bulk versus Tape & Reel). Electrical specifications are identical.

Q: Are there any pinout differences between these parts?

A: No. Both parts use the 6-UFDFN (6-USON 2x2) package with identical pinout and footprint. PCB layout and assembly processes require no modification.

Q: Which part should be specified for new designs?

A: LP5952LC-1.8/NOPB should be specified for new designs due to active product status and ROHS3 compliance, ensuring regulatory compliance and supply availability.

Q: Is the Tape & Reel packaging of LP5952LC-1.8/NOPB compatible with existing assembly equipment?

A: Yes. Tape & Reel is the standard packaging format for automated surface mount assembly. Existing pick-and-place equipment and reflow processes are compatible without modification.