LP2985ITP-3.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2985ITP-3.0/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output applications with 150mA current capacity. This device is packaged in a 5-DSBGA (5-pin Ultra Thin Fine-Pitch Ball Grid Array) configuration and operates across an industrial temperature range of -40°C to 125°C.

The LP2985ITP-3.0/NOPB is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this regulator.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3V
Output Current	150mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.58V @ 150mA
Quiescent Current	95 µA
PSRR	45dB (1kHz)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
Package Type	5-DSBGA

Substitute Part Grouping Explanation

Substitution of the LP2985ITP-3.0/NOPB is determined by strict equivalence across the following electrical and mechanical parameters:

Fixed output voltage of 3V
Output current rating of 150mA
Maximum input voltage of 16V
Dropout voltage specification of 0.58V @ 150mA
Quiescent current of 95 µA
PSRR of 45dB (1kHz)
Operating temperature range of -40°C to 125°C
Identical protection features (Over Current, Over Temperature, Short Circuit)
Enable control feature
Base product number LP2985

The LP2985IM5-3.0/NOPB qualifies as a direct substitute based on complete electrical parameter equivalence. The primary difference is packaging format: the substitute uses SOT-23-5 (SC-74A) surface mount package instead of 5-DSBGA, and carries active product status with higher inventory availability.

Parameter Comparison

Parameter	LP2985ITP-3.0/NOPB (Main)	LP2985IM5-3.0/NOPB (Substitute)
Manufacturer	Texas Instruments	Texas Instruments
Base Product Number	LP2985	LP2985
Output Voltage (Fixed)	3V	3V
Output Current	150mA	150mA
Input Voltage (Max)	16V	16V
Dropout Voltage (Max)	0.58V @ 150mA	0.58V @ 150mA
Quiescent Current	95 µA	95 µA
PSRR	45dB (1kHz)	45dB (1kHz)
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Control Features	Enable	Enable
Package / Case	5-UFBGA, DSBGA	SC-74A, SOT-753
Supplier Device Package	5-DSBGA	SOT-23-5
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The LP2985IM5-3.0/NOPB is the direct electrical equivalent to the LP2985ITP-3.0/NOPB. Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

The substitute part carries active product status, ensuring long-term availability and supply chain stability compared to the obsolete main part. Both devices maintain identical moisture sensitivity levels (MSL 1, Unlimited), indicating equivalent handling and storage requirements.

The primary consideration for selection is PCB layout compatibility. The main part uses 5-DSBGA packaging, while the substitute uses SOT-23-5 packaging. PCB footprint redesign is required if transitioning between these package types. Electrical performance and functional characteristics remain identical across both devices.

Frequently Asked Questions (FAQ)

Q: Are the LP2985ITP-3.0/NOPB and LP2985IM5-3.0/NOPB electrically identical?

A: Yes. Both devices deliver identical electrical performance across all specified parameters including output voltage, current rating, dropout voltage, quiescent current, PSRR, and protection features.

Q: What is the primary difference between these two parts?

A: The main difference is packaging format. The LP2985ITP-3.0/NOPB uses 5-DSBGA (ball grid array), while the LP2985IM5-3.0/NOPB uses SOT-23-5 (small outline transistor). This requires PCB footprint modification when substituting between the two.

Q: Can I use the LP2985IM5-3.0/NOPB as a direct drop-in replacement?

A: No, not without PCB redesign. While electrically equivalent, the different package types require different PCB footprints and land patterns. Pin-to-pin functionality is identical, but physical placement and soldering requirements differ.

Q: Why is the LP2985ITP-3.0/NOPB marked as obsolete?

A: The LP2985ITP-3.0/NOPB is classified as obsolete by Texas Instruments. The LP2985IM5-3.0/NOPB remains in active production, making it the recommended choice for new designs and ongoing supply requirements.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1, Unlimited). Environmental and regulatory compliance is equivalent.

Q: What are the inventory considerations?

A: The LP2985ITP-3.0/NOPB has 932 pieces available as new original stock. The LP2985IM5-3.0/NOPB has 3100 pieces available, providing greater supply availability for ongoing production needs.

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