LP2966IMMX-1833 Equivalent & Substitute Parts

Part Overview

The LP2966IMMX-1833 is a dual-output linear voltage regulator IC from Texas Instruments, designed for power management applications requiring fixed 1.8V and 3.3V outputs at 150mA per channel. This component is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production support. The part operates across industrial temperature ranges (-40°C to 125°C) and includes integrated protection features for over-current, over-temperature, and short-circuit conditions.

Substiute Parts

LP2966IMMX-1833

Texas InstrumentsIn Stock: 2094LP2966IMMX-1833 Datasheet

Current PartRFQ

LP2966IMM-1833/NOPB

National SemiconductorIn Stock: 1105LP2966IMM-1833/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP2966IMMX-1833 is determined by strict equivalence across the following critical parameters:

• Dual-output configuration with fixed 1.8V and 3.3V outputs
• 150mA output current per channel
• Maximum input voltage of 7V
• Dropout voltage of 0.27V @ 150mA
• 8-VSSOP package footprint compatibility
• Identical protection feature set (over-current, over-temperature, short-circuit)
• Operating temperature range of -40°C to 125°C
• Quiescent current of 300 µA
• PSRR specification of 60dB ~ 40dB (120Hz)

The LP2966IMM-1833/NOPB from National Semiconductor meets all these electrical and mechanical parameters, establishing it as a parametric equivalent. The primary distinction is product status: the substitute part is active, whereas the main part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The LP2966IMM-1833/NOPB is the appropriate selection for applications currently using or requiring the LP2966IMMX-1833. This substitute part maintains full electrical and mechanical compatibility while offering the advantage of active product status, ensuring continued availability and manufacturing support.

For designs requiring RoHS compliance, note that both the main part and substitute are RoHS non-compliant. Compliance requirements necessitate evaluation of alternative regulator architectures outside this equivalence group.

The substitute part carries identical export classification (EAR99) and tariff coding (HTSUS 8542.39.0001), simplifying procurement and regulatory documentation.

Frequently Asked Questions (FAQ)

Q: Can the LP2966IMM-1833/NOPB be used as a direct replacement for the LP2966IMMX-1833?

A: Yes. Both parts share identical electrical specifications, output voltage configuration (1.8V and 3.3V), current ratings (150mA per channel), and package footprint (8-VSSOP). Pin-for-pin and functional compatibility is confirmed.

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

A: The LP2966IMMX-1833 is classified as obsolete, indicating Texas Instruments has discontinued manufacturing and support. The LP2966IMM-1833/NOPB maintains active status from National Semiconductor, ensuring ongoing availability, technical support, and manufacturing consistency.

Q: Are there package compatibility concerns?

A: No. Both parts use the 8-VSSOP package with identical 0.118" (3.00mm) width specifications. PCB footprints and reflow profiles are compatible.

Q: Do both parts meet the same protection specifications?

A: Yes. Both include identical protection features: over-current, over-temperature, and short-circuit protection. Operating temperature ranges (-40°C to 125°C) and quiescent current specifications (300 µA) are equivalent.

Q: What compliance differences exist between the two parts?

A: Both parts are RoHS non-compliant and carry identical export classification (EAR99). Moisture sensitivity level (MSL 1 - Unlimited) is the same for both. No compliance advantage exists between the two options.