AP1512-50K5L-13 Equivalent & Substitute Parts

Part Overview

The AP1512-50K5L-13 is a switching regulator IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) component. This buck converter delivers a fixed 5V output at 2A capacity in a TO-263-5 surface mount package. The device is Active in product status and fully RoHS3 compliant with REACH unaffected classification.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges. Alternative sources provide design flexibility, supply chain redundancy, and inventory optimization while preserving circuit functionality and thermal characteristics.

Key Parameters

Parameter	AP1512-50K5L-13
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Function	Buck Switching Regulator
Output Voltage (Fixed)	5V
Output Current	2A
Package Type	TO-263-5, D2PAK (5 Leads + Tab)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Parameters:

Fixed output voltage of 5V
Surface mount package compatibility (TO-263-6, D2PAK with 5 Leads + Tab)
Buck topology (step-down switching regulator)
Positive output configuration
Active product status
RoHS3 compliance

Secondary Consideration Parameters:

Output current rating (1A to 3A acceptable for applications with reduced current requirements)
Input voltage range (minimum 4V to 4.75V; maximum 40V to 60V)
Switching frequency (52kHz to 200kHz)
Operating temperature range (-40°C to 125°C)

Substitute parts listed below maintain electrical equivalence through fixed 5V output and compatible package geometry. Current rating variations reflect design margin flexibility; lower-rated substitutes operate within specification for applications drawing ≤1A. Higher-rated substitutes provide additional thermal margin and current headroom.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Min)	Input Voltage (Max)	Switching Frequency	Package	Product Status	RoHS Status
AP1512-50K5L-13	Diodes Incorporated	5V	2A	Not specified	Not specified	Not specified	TO-263-5	Active	ROHS3
LM2575HVSX-5.0/NOPB	Texas Instruments	5V	1A	4V	60V	52kHz	TO-263-6	Active	ROHS3
LM2591HVS-5.0/NOPB	Texas Instruments	5V	1A	4.5V	60V	150kHz	TO-263-6	Active	ROHS3
LM2591HVSX-5.0/NOPB	Texas Instruments	5V	1A	4.5V	60V	150kHz	TO-263-6	Active	ROHS3
MIC4575-5.0WU-TR	Microchip Technology	5V	1.7A	4V	24V	200kHz	TO-263-6	Active	ROHS3
MIC4576-5.0WU	Microchip Technology	5V	3A	4V	36V	200kHz	TO-263-6	Active	ROHS3
TL2575-05IKTTR	Texas Instruments	5V	1A	4.75V	40V	52kHz	TO-263-6	Active	ROHS3
TL2575-05IKTTRG3	Texas Instruments	5V	1A	4.75V	40V	52kHz	TO-263-6	Active	ROHS3
TL2575HV-05IKTTR	Texas Instruments	5V	1A	4.75V	60V	52kHz	TO-263-6	Active	ROHS3
TL2575HV-05QKTTRQ1	Texas Instruments	5V	1A	4.75V	60V	52kHz	TO-263-6	Active	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original AP1512-50K5L-13.

Texas Instruments LM2575 Series (LM2575HVSX-5.0/NOPB, TL2575-05IKTTR, TL2575HV-05IKTTR, TL2575HV-05QKTTRQ1): These devices operate at 52kHz switching frequency, matching the AP1512 topology. The LM2575HVSX and TL2575HV variants support 60V maximum input, providing extended input range capability. TL2575HV-05QKTTRQ1 includes AEC-Q100 automotive qualification for applications requiring automotive-grade components.

Texas Instruments LM2591 Series (LM2591HVS-5.0/NOPB, LM2591HVSX-5.0/NOPB): These devices operate at 150kHz switching frequency, enabling smaller external component sizing compared to 52kHz alternatives. Both support 60V maximum input voltage. LM2591HVS is supplied in Tube packaging; LM2591HVSX is supplied in Cut Tape & Digi-Reel format.

Microchip Technology MIC4575-5.0WU-TR: This device combines buck and buck-boost topologies with 1.7A output current and 200kHz switching frequency. Input voltage range is limited to 24V maximum, suitable for applications with constrained input sources.

Microchip Technology MIC4576-5.0WU: This device delivers 3A output current at 200kHz switching frequency, providing the highest current capacity among substitutes. Input voltage range extends to 36V maximum. Higher current rating accommodates applications with increased power demands or thermal margin requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 1A-rated device for the 2A AP1512-50K5L-13?

A: Substitution with 1A-rated devices (LM2575HVSX-5.0/NOPB, LM2591HVS-5.0/NOPB, LM2591HVSX-5.0/NOPB, TL2575-05IKTTR, TL2575-05IKTTRG3, TL2575HV-05IKTTR, TL2575HV-05QKTTRQ1) is valid for applications drawing maximum 1A output current. These devices maintain identical 5V fixed output voltage and compatible TO-263-6 package geometry. Applications requiring the full 2A capacity must use MIC4576-5.0WU (3A) or remain with the original AP1512-50K5L-13.

Q: What is the difference between TL2575 and TL2575HV variants?

A: Both variants operate at identical 52kHz switching frequency and deliver 1A output current. The primary difference is maximum input voltage: TL2575-05IKTTR and TL2575-05IKTTRG3 support 40V maximum input, while TL2575HV-05IKTTR and TL2575HV-05QKTTRQ1 support 60V maximum input. Selection depends on input voltage requirements of the application.

Q: Are there packaging differences between substitute parts?

A: Yes. LM2591HVS-5.0/NOPB is supplied in Tube packaging. LM2575HVSX-5.0/NOPB, LM2591HVSX-5.0/NOPB, TL2575-05IKTTR, TL2575HV-05IKTTR are supplied in Cut Tape (CT) & Digi-Reel format. TL2575-05IKTTRG3, TL2575HV-05QKTTRQ1, and MIC4575-5.0WU-TR are supplied in Tape & Reel (TR) format. MIC4576-5.0WU is supplied in Tube packaging. Packaging selection affects handling, storage, and automated assembly compatibility.

Q: What switching frequency differences exist among substitutes?

A: Substitute parts operate at three distinct switching frequencies: 52kHz (LM2575 and TL2575 series), 150kHz (LM2591 series), and 200kHz (MIC4575 and MIC4576). Higher switching frequencies enable smaller external inductors and capacitors but may increase electromagnetic interference. Lower frequencies reduce EMI but require larger passive components.

Q: Does the AP1512-50K5L-13 have specified input voltage limits?

A: Input voltage range is not specified in the provided data for the AP1512-50K5L-13. Substitute parts provide reference ranges: 4V to 60V (LM2575HVSX, LM2591 series, TL2575HV variants), 4.75V to 40V (TL2575 standard variants), 4V to 36V (MIC4576), and 4V to 24V (MIC4575). Consult the AP1512 datasheet for exact input voltage specifications.

Q: Is the TL2575HV-05QKTTRQ1 suitable for automotive applications?

A: Yes. TL2575HV-05QKTTRQ1 carries AEC-Q100 automotive qualification and is graded for automotive use. This part is appropriate for automotive-grade designs requiring qualified components. Other substitutes are industrial-grade and do not carry automotive qualification.

Q: What is the moisture sensitivity level difference between the AP1512 and substitutes?

A: The AP1512-50K5L-13 has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. All substitute parts have MSL 3 (168 Hours), requiring controlled storage and handling within 168 hours of package opening. This difference affects storage protocols and assembly scheduling but does not impact electrical performance.

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