LM2575D2T-5R4 Equivalent & Substitute Parts

Part Overview

The LM2575D2T-5R4 is a buck switching regulator IC manufactured by onsemi, designed for step-down voltage conversion with a fixed 5V output and 1A current capacity. This part operates across an input voltage range of 4.75V to 40V with a switching frequency of 52kHz and is housed in a TO-263-6 D2PAK package. The device is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer	onsemi
Part Number	LM2575D2T-5R4
Function	Step-Down Buck Regulator
Output Voltage	5V Fixed
Output Current	1A
Input Voltage Range	4.75V to 40V
Switching Frequency	52kHz
Package	TO-263-6, D2PAK (5 Leads + Tab)
Operating Temperature	-40°C to 125°C (TJ)
Product Status	Obsolete
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitution for the LM2575D2T-5R4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Fixed 5V output voltage
Positive output configuration
Buck topology (step-down conversion)
Input voltage range minimum of 4.75V and maximum of 40V
Operating temperature range of -40°C to 125°C
TO-263-6 D2PAK package compatibility

Substitution Categories:

Direct Equivalent (Same Specifications): LM2575D2T-5R4G from onsemi provides identical electrical and mechanical specifications with active product status and RoHS3 compliance.

Pin-Compatible Alternatives (1A Output Current): LM2575-5.0WU (Microchip Technology) and LM2591HVS-5.0/NOPB, LM2591HVSX-5.0/NOPB (Texas Instruments) maintain the same 1A output current, 5V fixed output, and TO-263-6 package footprint. These parts support the same input voltage range and operating temperature specifications.

Higher Current Capacity Alternatives (3A Output Current): LM2576-5.0WU, LM2576-5.0WU-TR (Microchip Technology) and LM2592HVS-5.0/NOPB, LM2592HVSX-5.0/NOPB, LM2596S-5.0/NOPB, LM2596SX-5.0/NOPB (Texas Instruments) provide 2A to 3A output current capability while maintaining 5V fixed output, TO-263-6 package, and compatible input voltage ranges. These parts are suitable for designs requiring higher current capacity within the same form factor.

Parameter Comparison

Part Number	Manufacturer	Output Current	Input Voltage (Min)	Input Voltage (Max)	Switching Frequency	Package	Product Status	RoHS Status
LM2575D2T-5R4	onsemi	1A	4.75V	40V	52kHz	TO-263-6	Obsolete	Non-Compliant
LM2575D2T-5R4G	onsemi	1A	4.75V	40V	52kHz	TO-263-6	Active	RoHS3 Compliant
LM2575-5.0WU	Microchip Technology	1A	4V	40V	52kHz	TO-263-6	Active	RoHS3 Compliant
LM2576-5.0WU	Microchip Technology	3A	4V	40V	52kHz	TO-263-6	Active	RoHS3 Compliant
LM2576-5.0WU-TR	Microchip Technology	3A	4V	40V	52kHz	TO-263-6	Active	RoHS3 Compliant
LM2591HVS-5.0/NOPB	Texas Instruments	1A	4.5V	60V	150kHz	TO-263-6	Active	RoHS3 Compliant
LM2591HVSX-5.0/NOPB	Texas Instruments	1A	4.5V	60V	150kHz	TO-263-6	Active	RoHS3 Compliant
LM2592HVS-5.0/NOPB	Texas Instruments	2A	4.5V	60V	150kHz	TO-263-6	Active	RoHS3 Compliant
LM2592HVSX-5.0/NOPB	Texas Instruments	2A	4.5V	60V	150kHz	TO-263-6	Active	RoHS3 Compliant
LM2596S-5.0/NOPB	Texas Instruments	3A	4.5V	40V	150kHz	TO-263-6	Active	RoHS3 Compliant
LM2596SX-5.0/NOPB	Texas Instruments	3A	4.5V	40V	150kHz	TO-263-6	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: LM2575D2T-5R4G (onsemi) is the direct equivalent with identical electrical specifications, matching 1A output current, 52kHz switching frequency, and 4.75V to 40V input range. This part is active and RoHS3 compliant, addressing the obsolescence and compliance limitations of the original LM2575D2T-5R4.

Alternative for Equivalent Performance: LM2575-5.0WU (Microchip Technology) provides 1A output current with identical switching frequency and package. The minimum input voltage is 4V, which is lower than the original 4.75V specification, providing additional design margin. This part is active and RoHS3 compliant.

Higher Current Capacity Options: For designs requiring increased current capacity, LM2576-5.0WU or LM2576-5.0WU-TR (Microchip Technology) offer 3A output current while maintaining the same 52kHz switching frequency and TO-263-6 package. Both are active and RoHS3 compliant.

Texas Instruments SIMPLE SWITCHER® Series: LM2591HVS-5.0/NOPB and LM2591HVSX-5.0/NOPB maintain 1A output current with extended input voltage range (4.5V to 60V) and higher switching frequency (150kHz). LM2592 and LM2596 series provide 2A and 3A output current respectively with the same extended input range. All are active and RoHS3 compliant. The higher switching frequency may reduce output filter component size in new designs.

Compliance Consideration: All recommended substitutes are RoHS3 compliant, addressing the non-compliance status of the original part.

Frequently Asked Questions (FAQ)

Q: Can LM2576-5.0WU replace LM2575D2T-5R4 directly?

A: LM2576-5.0WU is pin-compatible and maintains the same 5V output, TO-263-6 package, and 52kHz switching frequency. The primary difference is increased output current capacity (3A versus 1A). This substitution is suitable for designs where the higher current rating does not create thermal or cost concerns. Verify that your application does not require the exact 1A current limitation of the original part.

Q: What is the difference between LM2591HVS-5.0/NOPB and LM2575-5.0WU?

A: Both provide 1A output current and 5V fixed output in TO-263-6 packages. LM2591HVS-5.0/NOPB operates at 150kHz switching frequency with 4.5V to 60V input range, while LM2575-5.0WU operates at 52kHz with 4V to 40V input range. The higher switching frequency of the LM2591 may allow smaller external filter components but requires verification of EMI characteristics for your application.

Q: Are all substitute parts available in the same packaging options?

A: Packaging availability varies by manufacturer and distributor. LM2575D2T-5R4G is available in Cut Tape and Digi-Reel. LM2575-5.0WU and LM2576-5.0WU are available in Tube packaging. LM2576-5.0WU-TR is available in Tape & Reel. Texas Instruments parts are available in Tube or Cut Tape & Digi-Reel formats. Confirm packaging availability with your component supplier for production requirements.

Q: Is the LM2575D2T-5R4 truly obsolete?

A: Yes, the original LM2575D2T-5R4 is classified as obsolete. The direct equivalent LM2575D2T-5R4G from onsemi is active and recommended for new designs and production continuity.

Q: Can I use a higher current part like LM2596S-5.0/NOPB in place of LM2575D2T-5R4?

A: Yes, LM2596S-5.0/NOPB is pin-compatible with identical 5V output and TO-263-6 package. The 3A output current rating is higher than the original 1A specification. This substitution is suitable when higher current capacity is acceptable. The switching frequency is 150kHz versus 52kHz, which may affect filter design and EMI characteristics.

Q: What compliance certifications should I verify for my application?

A: All recommended substitutes are RoHS3 compliant. Verify REACH status requirements for your specific application. The original LM2575D2T-5R4 is RoHS non-compliant and REACH unaffected. All substitute parts listed maintain REACH unaffected status except LM2592HVS-5.0/NOPB and LM2596SX-5.0/NOPB, which are REACH affected.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message