LM385PW-2-5 Equivalent & Substitute Parts

Part Overview

The LM385PW-2-5 is a shunt voltage reference IC that provides a fixed 2.5V output with ±3% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in an 8-TSSOP surface mount configuration. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

LM385PW-2-5

Texas InstrumentsIn Stock: 1085LM385PW-2-5 Datasheet

Current PartRFQ

LM385BPWR-2-5

Texas InstrumentsIn Stock: 1607LM385BPWR-2-5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM385PW-2-5 is determined by the following critical parameters:

• Reference voltage output: 2.5V fixed
• Output current capability: 20 mA
• Package type: 8-TSSOP surface mount
• Temperature coefficient: 20ppm/°C typical
• Noise specification: 120µVrms (10Hz to 10kHz)
• Operating temperature range: 0°C ~ 70°C
• Cathode current: 20 µA

The LM385BPWR-2-5 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is an improved tolerance specification (±1.5% versus ±3%), which represents enhanced performance without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LM385BPWR-2-5 is the qualified substitute for the obsolete LM385PW-2-5. Both components are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications with the exception of tolerance performance. The substitute part carries Last Time Buy status, indicating limited future availability.

Selection between these parts should be based on:

• Tolerance requirements: The LM385BPWR-2-5 provides ±1.5% tolerance versus ±3% for the original part, offering improved output voltage accuracy.
• Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status.
• Packaging: Identical 8-TSSOP surface mount configuration ensures direct PCB compatibility without layout modifications.
• Availability: The substitute part has higher current inventory (1570 Pcs versus 1028 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the LM385BPWR-2-5 be used as a direct replacement for the LM385PW-2-5?

A: Yes. Both parts share identical reference voltage (2.5V), output current (20 mA), temperature coefficient (20ppm/°C), noise characteristics (120µVrms), and 8-TSSOP package configuration. The substitute offers improved tolerance specification.

Q: What is the difference in tolerance between these parts?

A: The LM385PW-2-5 specifies ±3% tolerance, while the LM385BPWR-2-5 specifies ±1.5% tolerance. This means the substitute provides tighter output voltage accuracy.

Q: Are there any package or pinout differences?

A: No. Both components use the 8-TSSOP (0.173", 4.40mm Width) surface mount package with identical pinout and mechanical dimensions.

Q: What is the significance of the product status difference?

A: The LM385PW-2-5 is listed as obsolete, indicating it is no longer in production. The LM385BPWR-2-5 carries Last Time Buy status, meaning it remains available but with limited future supply. Long-term designs should transition to the substitute part.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the LM385PW-2-5 and LM385BPWR-2-5 are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (unlimited).

Q: What is the operating temperature range for these parts?

A: Both parts operate across 0°C to 70°C (TA), with identical temperature coefficient performance of 20ppm/°C typical.