LP2950ACDT-5.0 Equivalent & Substitute Parts

Part Overview

The LP2950ACDT-5.0 is a linear voltage regulator IC from onsemi, delivering a fixed 5V output at 100mA in a DPAK surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device provides positive fixed output regulation with integrated over-current and over-temperature protection, suitable for low-power applications requiring stable 5V rails.

Key Parameters

Parameter	Value
Manufacturer	onsemi
Output Voltage (Fixed)	5V
Output Current	100mA
Input Voltage (Max)	30V
Voltage Dropout (Max)	0.45V @ 100mA
Quiescent Current	120 µA
Operating Temperature	-40°C ~ 125°C
Package	TO-252-3 DPAK
Protection Features	Over Current, Over Temperature
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the LP2950ACDT-5.0 is determined by the following critical parameters: fixed 5V output voltage, 100mA output current capability, 30V maximum input voltage, TO-252-3 DPAK package compatibility, and operating temperature range of -40°C to 125°C. Parts are grouped into three categories based on electrical and mechanical alignment with these specifications.

Direct Manufacturer Equivalent: Parts from onsemi with identical electrical specifications and packaging, differing only in product status or packaging format.

Parametric Equivalent: Parts from alternative manufacturers (National Semiconductor, Texas Instruments) meeting all critical electrical parameters and package requirements, with minor variations in dropout voltage or quiescent current within acceptable tolerances.

Similar Substitute: Parts with higher output current capability (1A vs 100mA) in the same package, suitable for applications where increased current headroom is beneficial.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	Package	Product Status	RoHS Status
LP2950ACDT-5.0	onsemi	5V	100mA	30V	0.45V @ 100mA	120 µA	TO-252-3 DPAK	Obsolete	Non-compliant
LP2950ACDT-5.0G	onsemi	5V	100mA	30V	0.45V @ 100mA	120 µA	TO-252-3 DPAK	Active	ROHS3 Compliant
LP2950CDT-5.0G	onsemi	5V	100mA	30V	0.45V @ 100mA	120 µA	TO-252-3 DPAK	Active	ROHS3 Compliant
LP2950CDTX-5.0/NOPB	National Semiconductor	5V	100mA	30V	0.6V @ 100mA	120 µA	TO-252-3 DPAK	Active	Not specified
LP2950CDT-5.0/NOPB	National Semiconductor	5V	100mA	30V	0.6V @ 100mA	120 µA	TO-252-3 DPAK	Active	Not specified
SM72238TD-5.0/NOPB	Texas Instruments	5V	100mA	30V	0.6V @ 100mA	140 µA	TO-252-3 DPAK	Active	ROHS3 Compliant
BA05CC0FP-E2	Rohm Semiconductor	5V	1A	25V	Not specified	2.5 mA	TO-252-3 DPAK	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Preferred): LP2950ACDT-5.0G or LP2950CDT-5.0G from onsemi are the primary choices. Both are active products with ROHS3 compliance, identical electrical specifications to the obsolete LP2950ACDT-5.0, and the same TO-252-3 DPAK package. These require no design modification and provide the lowest risk substitution path.

For Active Product Sourcing: LP2950CDTX-5.0/NOPB and LP2950CDT-5.0/NOPB from National Semiconductor are parametric equivalents with active product status. The dropout voltage is 0.15V higher (0.6V vs 0.45V), which is acceptable in most applications but should be verified if operating near minimum input voltage margins.

For Texas Instruments Supply Chain: SM72238TD-5.0/NOPB provides an alternative from Texas Instruments with ROHS3 compliance and active status. Quiescent current is 20 µA higher (140 µA vs 120 µA), a minor difference for low-power applications.

For Higher Current Applications: BA05CC0FP-E2 from Rohm Semiconductor offers 1A output current in the same package, suitable if design requirements exceed 100mA. Note the maximum input voltage is 25V (vs 30V), which may be a constraint in some applications.

Frequently Asked Questions (FAQ)

Q: Can I use LP2950ACDT-5.0G as a direct replacement for LP2950ACDT-5.0?

A: Yes. LP2950ACDT-5.0G is electrically and mechanically identical to the obsolete LP2950ACDT-5.0, with the advantage of active product status and ROHS3 compliance. No design changes are required.

Q: What is the difference between LP2950ACDT-5.0G and LP2950CDT-5.0G?

A: Both are onsemi products with identical electrical specifications and packaging. The difference lies in internal die or manufacturing process designation (A vs C variant). Both are suitable substitutes with no functional difference for this application.

Q: Can I substitute the National Semiconductor LP2950CDTX-5.0/NOPB for the onsemi part?

A: Yes, with consideration of the 0.15V higher dropout voltage (0.6V vs 0.45V). If your circuit operates with input voltages close to the minimum required for regulation, verify that the higher dropout does not cause output voltage to fall below 5V under worst-case conditions.

Q: Is the BA05CC0FP-E2 a suitable substitute?

A: BA05CC0FP-E2 is a similar substitute offering higher output current (1A vs 100mA) in the same package. It is suitable if your application requires more than 100mA. However, the maximum input voltage is 25V instead of 30V, which may be a limitation depending on your input supply range.

Q: Are all substitute parts RoHS compliant?

A: LP2950ACDT-5.0G, LP2950CDT-5.0G, SM72238TD-5.0/NOPB, and BA05CC0FP-E2 are ROHS3 compliant. LP2950CDTX-5.0/NOPB and LP2950CDT-5.0/NOPB do not specify RoHS status in available documentation.

Q: Can I use these parts interchangeably in production?

A: LP2950ACDT-5.0G and LP2950CDT-5.0G are fully interchangeable. National Semiconductor and Texas Instruments parts are functionally equivalent but should be qualified through your standard component approval process due to manufacturer differences. BA05CC0FP-E2 requires design verification due to higher output current and lower maximum input voltage.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message