BD3575FP-E2 Equivalent & Substitute Parts

Part Overview

The BD3575FP-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed for positive adjustable output applications with 500mA current capability in a TO-252-3 surface mount package. This device is classified as not for new designs, making identification of functionally equivalent alternatives necessary for ongoing production support and design flexibility. The regulator provides adjustable output voltage between 2.8V and 12V with integrated over-current and over-temperature protection.

Key Parameters

Parameter	BD3575FP-E2 Specification
Manufacturer	Rohm Semiconductor
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Output Configuration	Positive Adjustable
Voltage - Input (Max)	36V
Voltage - Output (Min/Fixed)	2.8V
Voltage - Output (Max)	12V
Current - Output	500mA
Voltage Dropout (Max)	0.48V @ 200mA
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the BD3575FP-E2 is determined by the following critical parameters:

Package Compatibility: TO-252-3 surface mount package required for mechanical and thermal compatibility
Output Configuration: Positive adjustable voltage regulator topology
Voltage Range Overlap: Input maximum voltage and adjustable output voltage range must accommodate the original application requirements
Current Rating: Output current capability must meet or exceed 500mA
Protection Features: Over-current and over-temperature protection required
Temperature Range: Operating range of -40°C to 125°C
Compliance: RoHS3 compliance and surface mount technology

The LM1117IDTX-ADJ/NOPB from Texas Instruments meets these substitution criteria through identical package configuration, matching output topology, overlapping voltage specifications, and equivalent protection features.

Parameter Comparison

Parameter	BD3575FP-E2	LM1117IDTX-ADJ/NOPB	Compatibility Notes
Manufacturer	Rohm Semiconductor	Texas Instruments	Different manufacturer, same product category
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	Identical package
Output Configuration	Positive Adjustable	Positive Adjustable	Identical topology
Voltage - Input (Max)	36V	15V	LM1117 has lower maximum input voltage
Voltage - Output (Min/Fixed)	2.8V	1.25V	LM1117 supports lower minimum output voltage
Voltage - Output (Max)	12V	13.8V	LM1117 supports higher maximum output voltage
Current - Output	500mA	800mA	LM1117 provides higher current capability
Voltage Dropout (Max)	0.48V @ 200mA	1.2V @ 800mA	BD3575 has lower dropout voltage
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Identical temperature range
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Identical protection features
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Both compliant
Product Status	Not For New Designs	Active	LM1117 is actively supported

Engineering Selection Recommendations

The LM1117IDTX-ADJ/NOPB is a qualified substitute for the BD3575FP-E2 based on the following engineering criteria:

Package Equivalence: Both devices use identical TO-252-3 surface mount packaging, ensuring direct PCB compatibility without layout modifications
Functional Equivalence: Both are positive adjustable linear voltage regulators with matching output topology and protection features
Compliance Status: Both devices maintain ROHS3 compliance, satisfying regulatory requirements
Product Lifecycle: The LM1117 maintains active product status, providing long-term availability and manufacturing support compared to the BD3575FP-E2 which is not recommended for new designs
Performance Characteristics: The LM1117 offers enhanced specifications including higher output current (800mA vs 500mA) and extended output voltage range (1.25V to 13.8V vs 2.8V to 12V)

Application-specific validation is required when the BD3575FP-E2's lower dropout voltage (0.48V @ 200mA) or higher maximum input voltage (36V) are critical design parameters.

Frequently Asked Questions (FAQ)

Q: Can the LM1117IDTX-ADJ/NOPB directly replace the BD3575FP-E2 on existing PCBs?

A: Yes, direct PCB replacement is possible due to identical TO-252-3 package pinout and lead configuration. No PCB layout modifications are required.

Q: What are the key differences between these two regulators?

A: The primary differences are maximum input voltage (BD3575FP-E2: 36V vs LM1117: 15V), output current rating (BD3575FP-E2: 500mA vs LM1117: 800mA), and dropout voltage performance (BD3575FP-E2: 0.48V @ 200mA vs LM1117: 1.2V @ 800mA). Output voltage adjustment ranges also differ slightly.

Q: Is the LM1117IDTX-ADJ/NOPB suitable for applications requiring 36V input voltage?

A: No. The LM1117 has a maximum input voltage rating of 15V. Applications requiring 36V input voltage must use the BD3575FP-E2 or identify alternative regulators with higher input voltage specifications.

Q: Are both devices available in the same packaging options?

A: Both devices are available in TO-252-3 surface mount packaging. The BD3575FP-E2 is supplied in Tape & Reel format, while the LM1117IDTX-ADJ/NOPB is available in Cut Tape and Digi-Reel formats.

Q: What compliance certifications apply to both devices?

A: Both the BD3575FP-E2 and LM1117IDTX-ADJ/NOPB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001.

Q: Which device should be selected for new production designs?

A: The LM1117IDTX-ADJ/NOPB is recommended for new designs due to its active product status and ongoing manufacturer support. The BD3575FP-E2 is designated as not for new designs.

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