LM385PWR-1-2 Equivalent & Substitute Parts Reference

Part Overview

The LM385PWR-1-2 by Texas Instruments is a shunt voltage reference IC in the Power Management (PMIC) category, providing a fixed 1.235V ±2% output at up to 20 mA. Packaged in an 8-TSSOP surface-mount form, it is ROHS3 compliant and operates within a 0°C ~ 70°C temperature range. Substitution is necessary for circuit redesigns involving different mounting types, inventory limitations, or sourcing requirements due to packaging constraints or product lifecycle status.

Substiute Parts

LM385PWR-1-2

Texas InstrumentsIn Stock: 17024LM385PWR-1-2 Datasheet

Current PartRFQ

LM385LPR-1-2

Texas InstrumentsIn Stock: 12949LM385LPR-1-2 Datasheet

MFR RecommendedRFQ

LM385PWRE4-1-2

Texas InstrumentsIn Stock: 2744LM385PWRE4-1-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for LM385PWR-1-2 are grouped strictly according to the following allowed parameters:

• Reference Type: Shunt
• Output Type: Fixed
• Output Voltage: 1.235V
• Output Current: 20 mA
• Tolerance: ±2%
• Temperature Coefficient: 20ppm/°C Typical
• Noise Specification: 60µVrms (10Hz to 10kHz)
• Current - Cathode: 15 µA
• Operating Temperature Range: 0°C ~ 70°C
• Compliance: ROHS3, REACH
• Mounting Type & Package: Only as provided

Substitution is based solely on matching these criteria. Packaging and mounting type are differentiated for form factor compatibility.

Parameter Comparison

Engineering Selection Recommendations

Selection among LM385PWR-1-2, LM385PWRE4-1-2, and LM385LPR-1-2 may be determined by product status (Active or Obsolete), compliance status (RoHS3, REACH), and packaging requirements. LM385PWR-1-2 and LM385LPR-1-2 are both active and ROHS3 compliant with REACH unaffected status. LM385PWRE4-1-2 is obsolete but shares compliance certifications. Mounting type and package differ: surface-mount (8-TSSOP) and through-hole (TO-92-3). MSL requirements may also affect choice for reflow processes.

Frequently Asked Questions (FAQ)

Q1: What are the main parameters that define equivalence for LM385PWR-1-2 substitutes?
A1: Reference type, output voltage, output current, tolerance, temperature coefficient, noise specification, operating temperature range, compliance standards, and mounting type.

Q2: Can LM385LPR-1-2 be substituted directly for LM385PWR-1-2 in all designs?
A2: LM385LPR-1-2 matches all key electrical parameters but uses a different package (TO-92-3, through-hole) compared to 8-TSSOP, which affects mechanical compatibility on the PCB.

Q3: What considerations are necessary regarding the product status of substitutes?
A3: Obsolete status, such as with LM385PWRE4-1-2, indicates limited future availability. Active status parts like LM385PWR-1-2 and LM385LPR-1-2 are preferred for new designs or ongoing production.

Q4: How is compliance assured between these substitutes?
A4: All listed substitutes are ROHS3 compliant and unaffected by REACH regulations, verified by the manufacturer.

Q5: How do mounting type and package differences impact substitution?
A5: Surface-mount and through-hole packages require appropriate board layouts and assembly processes. Mechanical footprint must match the intended design.

Q6: Are all substitutes equally suitable for the same operating temperature range?
A6: Yes, all substitutes operate between 0°C and 70°C as specified in the provided parameters.