BD3574FP-E2 Equivalent & Substitute Parts

Part Overview

The BD3574FP-E2 is a linear voltage regulator IC from Rohm Semiconductor designed for positive fixed 5V output at 500mA in a TO-252-5 surface mount package. This device is classified as Not For New Designs, indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where continued component availability is required.

Key Parameters

Parameter	BD3574FP-E2
Manufacturer	Rohm Semiconductor
Output Voltage (Fixed)	5V
Output Current	500mA
Input Voltage (Max)	36V
Dropout Voltage (Max)	0.48V @ 200mA
Package Type	TO-252-5 (DPAK)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the BD3574FP-E2 is determined by the following critical parameters:

Fixed output voltage of 5V
Output current capability of 400mA or greater
Surface mount DPAK package compatibility (TO-252-5 or TO-252-3)
Input voltage rating of 26V or higher
Operating temperature range covering -40°C to 125°C minimum
Protection against over-current and over-temperature conditions

The three substitute parts listed meet these core electrical and mechanical requirements while offering varying levels of enhanced features and product status classifications.

Parameter Comparison

Parameter	BD3574FP-E2	NCV4276BDT50RKG	TL750M05QKVURQ1	TLE42764DV50ATMA1
Manufacturer	Rohm Semiconductor	onsemi	Texas Instruments	Infineon Technologies
Output Voltage	5V	5V	5V	5V
Output Current	500mA	400mA	750mA	400mA
Input Voltage (Max)	36V	45V	26V	40V
Dropout Voltage (Max)	0.48V @ 200mA	0.5V @ 250mA	0.6V @ 750mA	0.5V @ 250mA
Quiescent Current	30 µA	200 µA	Not specified	220 µA
PSRR	55dB (120Hz)	70dB (100Hz)	55dB (120Hz)	54dB (100Hz)
Package Type	TO-252-5	DPAK-5	TO-252-3	PG-TO252-5
Operating Temperature	-40°C to 125°C	-40°C to 150°C	-40°C to 125°C	-40°C to 150°C
Product Status	Not For New Designs	Not For New Designs	Active	Active
Automotive Grade	No	Yes (AEC-Q100)	Yes (AEC-Q100)	Yes (AEC-Q100)
Protection Features	Over Current, Over Temperature	Over Temperature, Reverse Polarity, Short Circuit	Over Current, Over Temperature, Over Voltage, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity, Short Circuit

Engineering Selection Recommendations

NCV4276BDT50RKG (onsemi): This substitute provides equivalent output current capability at 400mA with higher input voltage tolerance (45V maximum). It includes automotive-grade qualification (AEC-Q100) and enhanced protection features including reverse polarity and short circuit protection. However, it shares the same Not For New Designs status as the original part. Quiescent current is elevated at 200 µA compared to the original 30 µA.

TL750M05QKVURQ1 (Texas Instruments): This substitute offers the highest output current capability at 750mA, exceeding the original part's 500mA rating. It maintains Active product status, ensuring long-term availability and support. The device includes comprehensive protection features and automotive qualification. Input voltage maximum is limited to 26V, which is lower than the original 36V specification. Package configuration is TO-252-3 (2 leads + tab) rather than TO-252-5 (4 leads + tab), requiring PCB layout verification.

TLE42764DV50ATMA1 (Infineon Technologies): This substitute delivers 400mA output current with Active product status and automotive-grade qualification (AEC-Q100). Input voltage tolerance reaches 40V, exceeding the original 36V rating. The device includes comprehensive protection features and maintains low quiescent current at 220 µA. Package designation is PG-TO252-5, compatible with TO-252-5 footprints.

For legacy system support requiring exact performance matching, NCV4276BDT50RKG provides the closest electrical equivalence. For new production or extended lifecycle applications, TL750M05QKVURQ1 or TLE42764DV50ATMA1 are preferred due to Active product status and automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can NCV4276BDT50RKG replace BD3574FP-E2 in existing designs? A: Yes. Both devices provide 5V fixed output with compatible TO-252-5 DPAK packaging. The 400mA output current of the NCV4276BDT50RKG is sufficient for applications originally designed for 500mA if load current does not exceed 400mA. Verify actual circuit current requirements before substitution.

Q: Why does TL750M05QKVURQ1 have a lower maximum input voltage (26V vs 36V)? A: The TL750M05QKVURQ1 is designed with different internal architecture optimized for lower input voltage operation while delivering higher output current (750mA). Applications requiring input voltages above 26V must use NCV4276BDT50RKG or TLE42764DV50ATMA1.

Q: Is the TO-252-3 package of TL750M05QKVURQ1 compatible with TO-252-5 PCB layouts? A: No. TO-252-3 (2 leads + tab) and TO-252-5 (4 leads + tab) have different pin configurations. PCB layout modifications are required. Verify pin assignments and trace routing before implementing this substitute.

Q: Which substitute offers the best long-term availability? A: TL750M05QKVURQ1 and TLE42764DV50ATMA1 both maintain Active product status, ensuring continued manufacturing and supply. NCV4276BDT50RKG shares Not For New Designs status with the original part, limiting future availability.

Q: Are all substitutes RoHS3 compliant? A: Yes. All three substitute parts carry RoHS3 Compliant certification, matching the original BD3574FP-E2 compliance status.

Q: What is the impact of higher quiescent current in onsemi and Infineon substitutes? A: The NCV4276BDT50RKG and TLE42764DV50ATMA1 exhibit quiescent currents of 200 µA and 220 µA respectively, compared to 30 µA in the original part. In battery-powered or low-power standby applications, this difference may impact power consumption. Evaluate standby current requirements for your specific application.

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