LP2985-50DBVRG4 Equivalent & Substitute Parts

Part Overview

The LP2985-50DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 150mA in SOT-23-5 surface mount packaging. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and production requirements. Alternative parts maintain the same electrical performance characteristics while offering improved availability and product status.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage	5V Fixed
Output Current	150mA
Input Voltage (Max)	16V
Dropout Voltage	0.58V @ 150mA
Quiescent Current	95 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the LP2985-50DBVRG4 is determined by strict equivalence across the following critical parameters: output voltage (5V fixed), output current capability (150mA minimum), input voltage rating (16V maximum), package type (SOT-23-5), mounting configuration (surface mount), and operating temperature range (-40°C to 125°C). Parts are grouped into two categories:

Manufacturer Recommended Substitutes (MFR): Parts with identical electrical specifications, same package, and active product status from Texas Instruments.

Parametric Equivalents: Parts with identical core electrical parameters but different product status or packaging variants, maintaining full functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Output Current	Dropout Voltage	Package	Product Status	Inventory
LP2985-50DBVRG4	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Discontinued	929 Pcs
LP2985AIM5-5.0/NOPB	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	25200 Pcs
LP2985IM5-5.0/NOPB	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	23400 Pcs
LP2985-50DBVR	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	32100 Pcs
LP2985-50DBVT	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	2000 Pcs
LP2985A-50DBVR	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	80100 Pcs
LP2985A-50DBVT	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Active	9800 Pcs
LP2985AIM5-5.0	Texas Instruments	150mA	0.58V @ 150mA	SOT-23-5	Last Time Buy	2046 Pcs
LP2992AIM5-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	SOT-23-5	Active	17348 Pcs
LP2992AIM5X-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	SOT-23-5	Active	6380 Pcs
LP2992IM5-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	SOT-23-5	Active	1218 Pcs

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement): LP2985AIM5-5.0/NOPB, LP2985IM5-5.0/NOPB, LP2985-50DBVR, and LP2985A-50DBVR provide identical electrical performance with active product status and ROHS3 compliance. These parts are recommended for new designs and production continuity.

Secondary Substitutes (Parametric Equivalents): LP2985-50DBVT and LP2985A-50DBVT maintain full electrical equivalence with active status but lower inventory levels. LP2985AIM5-5.0 is available but carries Last Time Buy status and RoHS non-compliance, suitable only for legacy applications with existing qualification.

Higher Current Alternative: LP2992 series (LP2992AIM5-5.0/NOPB, LP2992AIM5X-5.0/NOPB, LP2992IM5-5.0/NOPB) provides 250mA output current in the same SOT-23-5 package with active status and ROHS3 compliance. These are suitable for applications requiring higher current capacity while maintaining 5V output and identical package footprint.

Frequently Asked Questions (FAQ)

Q: Can LP2985-50DBVRG4 be directly replaced with LP2985AIM5-5.0/NOPB? A: Yes. Both parts deliver 150mA at 5V output with 0.58V dropout voltage in SOT-23-5 packaging. LP2985AIM5-5.0/NOPB is active with superior availability and ROHS3 compliance.

Q: What is the difference between LP2985-50DBVR and LP2985A-50DBVR? A: Both are parametric equivalents with identical electrical specifications and SOT-23-5 packaging. LP2985A-50DBVR has significantly higher inventory (80100 Pcs vs 32100 Pcs) and is recommended for production volume requirements.

Q: Can I use LP2992 series as a substitute? A: LP2992 series maintains 5V output and SOT-23-5 packaging but increases output current to 250mA with 0.85V dropout voltage. This is suitable for applications requiring higher current capacity. Verify your circuit design does not depend on the lower dropout voltage of the LP2985 series.

Q: What does "Last Time Buy" status mean for LP2985AIM5-5.0? A: Last Time Buy indicates the manufacturer will discontinue this part after current inventory is exhausted. Existing inventory is available but limited to 2046 Pcs. Use active status alternatives for new designs.

Q: Are all substitute parts ROHS3 compliant? A: All recommended primary and secondary substitutes are ROHS3 compliant except LP2985AIM5-5.0, which is RoHS non-compliant. Verify compliance requirements for your application before selection.

Q: Does packaging variant affect substitution? A: All listed parts use SOT-23-5 (SC-74A) surface mount packaging. Packaging variants (Cut Tape, Digi-Reel, tube) do not affect electrical compatibility, only supply and handling logistics.

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