BA05SFP-E2 Equivalent & Substitute Parts

Part Overview

The BA05SFP-E2 is a linear voltage regulator IC from Rohm Semiconductor designed to deliver a fixed 5V output at 1A maximum current. This device is classified as not for new designs, making identification of active equivalent and substitute parts essential for ongoing production support and design updates. The part operates across an input voltage range up to 25V with integrated protection features including over-current, over-temperature, and over-voltage protection. Surface mount packaging in TO-252-5 (DPAK) format enables integration into compact power management circuits.

Key Parameters

Parameter	Value
Manufacturer Part Number	BA05SFP-E2
Manufacturer	Rohm Semiconductor
Category	Power Management (PMIC)
Output Voltage (Fixed)	5V
Output Current	1A
Input Voltage (Max)	25V
Package / Case	TO-252-5, DPAK (4 Leads + Tab)
Operating Temperature Range	-40°C ~ 85°C
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the BA05SFP-E2 is determined by the following critical parameters:

Output Voltage: Must be fixed at 5V
Package Type: Must be TO-252-5 (DPAK) format for mechanical and thermal compatibility
Output Configuration: Must be positive fixed output
Number of Regulators: Must be single regulator configuration
Mounting Type: Must be surface mount

The identified substitute parts meet these core requirements while offering variations in output current capacity, input voltage tolerance, and operating temperature range. These variations allow for direct replacement in applications where the substitute specifications exceed or match the original design requirements.

Parameter Comparison

Parameter	BA05SFP-E2 (Rohm)	LD29150PT50R (STMicroelectronics)	TL751M05QKVURQ1 (Texas Instruments)
Output Voltage (Fixed)	5V	5V	5V
Output Current	1A	1.5A	750mA
Input Voltage (Max)	25V	14V	26V
Voltage Dropout (Max)	Not specified	0.7V @ 1.5A	0.6V @ 750mA
Quiescent Current (Iq)	2.5 mA	180 µA	Not specified
PSRR (120Hz)	55dB	64dB	55dB
Package / Case	TO-252-5, DPAK	TO-252-5, DPAK	TO-252-5, DPAK
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Protection Features	Over Current, Over Temperature, Over Voltage	Over Current, Over Temperature	Over Current, Over Temperature, Over Voltage, Reverse Polarity

Engineering Selection Recommendations

LD29150PT50R (STMicroelectronics) is an active product suitable for applications requiring higher output current capacity (1.5A vs. 1A). This part provides superior power supply rejection ratio (64dB vs. 55dB) and extended operating temperature range (-40°C ~ 125°C). However, the maximum input voltage is limited to 14V, which may restrict use in circuits with higher input voltage requirements. This part is recommended for designs where the 1A output current of the original part is insufficient and input voltage remains below 14V.

TL751M05QKVURQ1 (Texas Instruments) is an active product with automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C ~ 125°C). Output current is reduced to 750mA, making this part suitable only for applications where the load current does not exceed 750mA. The part offers enhanced protection features including reverse polarity protection and supports input voltages up to 26V. This part is recommended for automotive applications or designs requiring reverse polarity protection where output current requirements are 750mA or less.

Both substitute parts carry ROHS3 compliance and are currently in active production status, ensuring long-term availability compared to the original BA05SFP-E2.

Frequently Asked Questions (FAQ)

Q: Can LD29150PT50R replace BA05SFP-E2 in all applications?

A: LD29150PT50R is mechanically and electrically compatible in applications where input voltage does not exceed 14V. The higher output current rating (1.5A) makes it suitable for designs requiring equal or lower current. Verify input voltage specifications in your circuit design before substitution.

Q: What is the primary limitation of TL751M05QKVURQ1 as a substitute?

A: The output current rating is 750mA, which is 25% lower than the original BA05SFP-E2 (1A). This part is suitable only for applications where the maximum load current does not exceed 750mA. Applications requiring the full 1A output must use LD29150PT50R or maintain the original part.

Q: Are all substitute parts pin-compatible with BA05SFP-E2?

A: Yes. All three parts use the TO-252-5 (DPAK) package with identical pinout configuration, enabling direct mechanical replacement on printed circuit boards.

Q: Which substitute part offers the best compliance for new designs?

A: Both LD29150PT50R and TL751M05QKVURQ1 are active products with ROHS3 compliance. TL751M05QKVURQ1 includes automotive-grade qualification (AEC-Q100), making it suitable for automotive and high-reliability applications. LD29150PT50R is recommended for general industrial and consumer applications.

Q: What is the impact of lower quiescent current in LD29150PT50R?

A: The LD29150PT50R quiescent current is 180 µA compared to 2.5 mA in BA05SFP-E2. This 93% reduction in standby current consumption results in lower power dissipation in applications with extended idle periods or battery-powered systems.

Q: Can TL751M05QKVURQ1 be used in circuits with input voltages above 26V?

A: No. The maximum input voltage specification for TL751M05QKVURQ1 is 26V. Exceeding this specification may result in device damage or failure. For circuits requiring input voltages above 26V, use BA05SFP-E2 (25V max) or LD29150PT50R (14V max) only if input voltage remains within specified limits.

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