LP2950CDT-3.0 Equivalent & Substitute Parts

Part Overview

The LP2950CDT-3.0 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 3V positive output at 100mA maximum current with a maximum dropout voltage of 0.6V at full load. The device is housed in a TO-252-3 (DPAK) surface mount package and operates across the industrial temperature range of -40°C to 125°C.

This part is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Output (Min/Fixed)	3V
Voltage - Input (Max)	30V
Current - Output	100mA
Voltage Dropout (Max)	0.6V @ 100mA
Current - Quiescent (Iq)	120 µA
Operating Temperature	-40°C ~ 125°C
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Protection Features	Over Current, Over Temperature

Substitute Part Grouping Explanation

Substitute parts for the LP2950CDT-3.0 are selected based on the following critical parameters:

Fixed 3V output voltage
Positive output configuration
Surface mount TO-252-3 (DPAK) package compatibility
Operating temperature range of -40°C to 125°C
Over current and over temperature protection features

The substitute parts are grouped into two categories:

Direct Equivalents: Parts that maintain identical electrical specifications and output current ratings (100mA), differing only in packaging format or manufacturer source.

Functional Alternatives: Parts that meet the core voltage regulation requirements but with enhanced specifications (higher output current capability or improved performance characteristics), suitable for applications where the original part specifications are met or exceeded.

Parameter Comparison

Parameter	LP2950CDT-3.0	LP2950CDT-3.0/NOPB	BA03CC0FP-E2	LP2950CDT-3.0RKG
Manufacturer	Texas Instruments	Texas Instruments	Rohm Semiconductor	onsemi
Product Status	Discontinued	Active	Active	Active
Output Voltage (Fixed)	3V	3V	3V	3V
Current - Output	100mA	100mA	1A	100mA
Voltage - Input (Max)	30V	30V	25V	30V
Voltage Dropout (Max)	0.6V @ 100mA	0.6V @ 100mA	Not specified	0.45V @ 100mA
Current - Quiescent (Iq)	120 µA	120 µA	2.5 mA	120 µA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature, Over Voltage	Over Current, Over Temperature
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

LP2950CDT-3.0/NOPB (Texas Instruments): This is the direct equivalent with identical electrical specifications and output current rating. It maintains active product status and is ROHS3 compliant. This part is the primary recommendation for direct replacement in existing designs.

LP2950CDT-3.0RKG (onsemi): This part provides identical electrical specifications with an improved dropout voltage of 0.45V at 100mA compared to the original 0.6V. It is ROHS3 compliant and actively supported. This option is suitable for applications requiring lower dropout performance.

BA03CC0FP-E2 (Rohm Semiconductor): This part exceeds the original specifications with a 1A output current capability versus the original 100mA. It includes over voltage protection in addition to over current and over temperature protection. The maximum input voltage is 25V compared to 30V for the original part. This option is appropriate for applications requiring higher current delivery or enhanced protection features, provided the 25V input maximum is acceptable.

All substitute parts maintain the same TO-252-3 (DPAK) package footprint and surface mount compatibility, ensuring direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can LP2950CDT-3.0/NOPB be used as a direct replacement for LP2950CDT-3.0?

A: Yes. Both parts deliver identical electrical performance: 3V fixed output, 100mA maximum current, 0.6V dropout at full load, and 120 µA quiescent current. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 versus non-compliant). PCB layout and circuit design require no modification.

Q: What is the difference between LP2950CDT-3.0RKG and the original LP2950CDT-3.0?

A: The LP2950CDT-3.0RKG offers improved dropout voltage performance at 0.45V @ 100mA compared to 0.6V for the original part. All other electrical specifications remain identical. Both support 100mA output current and operate across -40°C to 125°C. The onsemi version is ROHS3 compliant and actively produced.

Q: When should BA03CC0FP-E2 be selected instead of the direct equivalents?

A: The BA03CC0FP-E2 is selected when the application requires higher output current (1A versus 100mA) or when over voltage protection is a design requirement. The maximum input voltage specification is 25V, which must be verified as acceptable for the application. The higher quiescent current of 2.5 mA should be evaluated for battery-powered or low-power applications.

Q: Are all substitute parts in the same package?

A: Yes. All parts use the TO-252-3 (DPAK) surface mount package with identical pinout and footprint. Direct PCB substitution is possible without layout modifications.

Q: What compliance certifications apply to substitute parts?

A: LP2950CDT-3.0/NOPB and LP2950CDT-3.0RKG are ROHS3 compliant. BA03CC0FP-E2 is also ROHS3 compliant. All parts are REACH unaffected and classified under ECCN EAR99. The original LP2950CDT-3.0 is RoHS non-compliant.

Q: Can these parts be used interchangeably in production?

A: LP2950CDT-3.0/NOPB and LP2950CDT-3.0RKG are fully interchangeable for designs requiring 100mA output. BA03CC0FP-E2 is interchangeable only if the application can accommodate 1A output capability and the 25V maximum input voltage specification. Design verification is required before production implementation.

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