LP2983IM5-1.2/NOPB Equivalent & Substitute Parts

Part Overview

The LP2983IM5-1.2/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.2V output at 150mA in a SOT-23-5 surface mount package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for new designs or production continuity. The device provides regulated power management with integrated protection features including over-current, over-temperature, and short-circuit protection.

Substiute Parts

LP2983IM5-1.2/NOPB

Texas InstrumentsIn Stock: 4300LP2983IM5-1.2/NOPB Datasheet

Current PartRFQ

TLV76701DGNR

Texas InstrumentsIn Stock: 1375TLV76701DGNR Datasheet

MFR RecommendedRFQ

LP2983AIM5X-1.2/NOPB

Texas InstrumentsIn Stock: 4255LP2983AIM5X-1.2/NOPB Datasheet

Parametric EquivalentRFQ

LP2983IM5X-1.2/NOPB

National SemiconductorIn Stock: 4500LP2983IM5X-1.2/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2983IM5-1.2/NOPB are identified based on the following critical parameters that determine functional compatibility:

Fixed Output Voltage: 1.2V output requirement Output Current Capability: Minimum 150mA Input Voltage Range: Maximum 16V Package Type: SOT-23-5 surface mount form factor Protection Features: Over-current, over-temperature, and short-circuit protection Operating Temperature Range: -40°C to 125°C Output Configuration: Positive fixed output

Substitute parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications and package form factor, differing only in product status or packaging format. These parts are direct pin-for-pin and functional replacements.

Functional Alternatives provide the required output voltage and current capability within the same package family but may have enhanced specifications or different product status classifications.

Parameter Comparison

Engineering Selection Recommendations

LP2983AIM5X-1.2/NOPB is the preferred parametric equivalent for direct replacement. This part maintains identical electrical specifications and SOT-23-5 package compatibility. The part is classified as Last Time Buy, indicating limited future availability but current production status. ROHS3 compliance is maintained.

LP2983IM5X-1.2/NOPB provides an active production alternative with identical electrical and package specifications. This part is currently in active production status, ensuring long-term availability. Manufactured by National Semiconductor, it maintains the same functional characteristics and protection features as the original part.

TLV76701DGNR serves as a functional alternative for applications requiring enhanced current capability (1A versus 150mA) or adjustable output voltage configuration. This part operates in the same input voltage range and temperature envelope. The package differs (8-HVSSOP versus SOT-23-5), requiring PCB layout modification. This part is in active production status. Selection of this alternative requires verification that the 8-HVSSOP package footprint is compatible with the target application and that adjustable output voltage functionality does not introduce design complexity.

Frequently Asked Questions (FAQ)

Q: Can LP2983AIM5X-1.2/NOPB be used as a direct replacement for LP2983IM5-1.2/NOPB?

A: Yes. LP2983AIM5X-1.2/NOPB is a parametric equivalent with identical output voltage (1.2V), output current (150mA), package type (SOT-23-5), and protection features. Pin configuration and electrical performance are equivalent.

Q: What is the difference between LP2983IM5X-1.2/NOPB and LP2983AIM5X-1.2/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications and SOT-23-5 packaging. The primary difference is manufacturer (National Semiconductor versus Texas Instruments) and product status (Active versus Last Time Buy). Electrical performance and pin compatibility are equivalent.

Q: Why is TLV76701DGNR listed as a substitute if it has a different package?

A: TLV76701DGNR meets the core functional requirements of positive output voltage regulation at 1.2V with enhanced current capability (1A). However, the 8-HVSSOP package requires PCB redesign compared to the SOT-23-5 footprint. This part is suitable only for applications where package change is acceptable and where the adjustable output voltage feature does not introduce design constraints.

Q: Are all substitute parts ROHS3 compliant?

A: LP2983IM5-1.2/NOPB and LP2983AIM5X-1.2/NOPB are ROHS3 compliant. LP2983IM5X-1.2/NOPB compliance status is not specified in available documentation. TLV76701DGNR RoHS status is listed as not applicable.

Q: What is the minimum output current requirement for selecting a substitute?

A: The minimum output current requirement is 150mA to maintain functional equivalence with the original LP2983IM5-1.2/NOPB specification. All listed substitutes meet or exceed this requirement.

Q: Can the adjustable output voltage feature of TLV76701DGNR be configured to 1.2V fixed output?

A: TLV76701DGNR is an adjustable regulator with output voltage range from 0.8V to 14.6V. Configuration to 1.2V fixed output requires external resistor network design. This introduces additional component count and design complexity compared to the fixed-output LP2983 series.