IPS021LTR Equivalent & Substitute Parts

Part Overview

The IPS021LTR is a Power Management IC (PMIC) manufactured by Infineon Technologies, classified as a Power Switch/Driver with 1:1 N-Channel configuration rated for 1.4A output current in SOT-223 packaging. The device features low-side output configuration with on/off interface control, designed for general-purpose switching applications with current limiting and over-temperature fault protection.

The IPS021LTR has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

IPS021LTR

Infineon TechnologiesIn Stock: 6376IPS021LTR Datasheet

Current PartRFQ

BSP76E6433HUMA1

Infineon TechnologiesIn Stock: 25389BSP76E6433HUMA1 Datasheet

MFR RecommendedRFQ

BTS3134NHUMA1

Infineon TechnologiesIn Stock: 5409BTS3134NHUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IPS021LTR is determined by the following critical parameters:

Core Compatibility Requirements:

• Switch type: General Purpose N-Channel, Low Side configuration
• Output ratio: 1:1 (Input:Output)
• Interface: On/Off control
• Package: SOT-223 (TO-261-4, TO-261AA) surface mount
• Operating temperature range: -40°C to 150°C (TJ)
• Fault protection: Current Limiting and Over Temperature capability

Allowable Parameter Variations:

• Output current: Equal to or greater than 1.4A
• Load voltage: Equal to or greater than 35V maximum rating
• Rds On: Lower values acceptable (improved performance)
• Additional fault protection features: Acceptable (Over Voltage protection)
• Product status: Active preferred for long-term availability
• RoHS compliance: ROHS3 compliant versions preferred for regulatory alignment

The substitute parts BSP76E6433HUMA1 and BTS3134NHUMA1 meet all core compatibility requirements while offering enhanced electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

BSP76E6433HUMA1 Selection Criteria: This substitute maintains electrical equivalence with the IPS021LTR at the 1.4A output current specification. The BSP76E6433HUMA1 offers improved load voltage rating (42V vs. 35V), enhanced fault protection with over-voltage detection, and active product status ensuring long-term availability. ROHS3 compliance supports regulatory requirements for new designs. The slightly higher Rds On (150mOhm vs. 130mOhm) represents minimal performance degradation acceptable for general-purpose switching applications. Packaging remains identical (SOT-223). This part is suitable for direct replacement in existing designs with no circuit modifications required.

BTS3134NHUMA1 Selection Criteria: This substitute provides enhanced electrical performance with 3A output current capability (2.14x the original specification) and significantly reduced Rds On (35mOhm vs. 130mOhm), resulting in lower power dissipation and improved thermal characteristics. Load voltage rating matches BSP76E6433HUMA1 at 42V. Active product status and ROHS3 compliance ensure supply chain continuity and regulatory alignment. Packaging remains SOT-223 compatible. This part is suitable for applications requiring higher current capacity or improved efficiency, though it is not required for designs operating within the original 1.4A specification.

Both substitute parts are manufactured by Infineon Technologies, maintain identical package footprints, and support the same operating temperature range as the obsolete IPS021LTR.

Frequently Asked Questions (FAQ)

Q: Can BSP76E6433HUMA1 be used as a direct replacement for IPS021LTR? A: Yes. The BSP76E6433HUMA1 maintains electrical equivalence at the 1.4A specification with identical SOT-223 packaging and pinout. No circuit modifications are required. The improved load voltage rating (42V vs. 35V) and additional over-voltage protection provide enhanced reliability.

Q: What is the primary difference between BSP76E6433HUMA1 and BTS3134NHUMA1? A: The BTS3134NHUMA1 provides higher output current (3A vs. 1.4A) and significantly lower Rds On (35mOhm vs. 150mOhm). Both maintain SOT-223 packaging and identical pinout. Selection depends on whether the application requires the enhanced current capacity and efficiency of the BTS3134NHUMA1 or the electrical equivalence of the BSP76E6433HUMA1.

Q: Are the substitute parts pin-compatible with IPS021LTR? A: Yes. Both BSP76E6433HUMA1 and BTS3134NHUMA1 use PG-SOT223-4 packaging (TO-261-4, TO-261AA), which maintains identical pinout and footprint compatibility with the original IPS021LTR SOT-223 package.

Q: What is the impact of the higher Rds On in BSP76E6433HUMA1 compared to IPS021LTR? A: The Rds On difference (150mOhm vs. 130mOhm) results in approximately 15% higher on-state resistance. For a 1.4A load, this translates to minimal additional power dissipation (approximately 0.028W increase). This is acceptable for general-purpose switching applications and does not require circuit redesign.

Q: Why is RoHS compliance important for substitute selection? A: The IPS021LTR is RoHS non-compliant, while both substitute parts are ROHS3 compliant. For new designs or applications subject to regulatory requirements, ROHS3 compliance ensures adherence to environmental and material restriction standards. Existing designs using IPS021LTR may continue operation, but migration to compliant substitutes is recommended for long-term sustainability.

Q: What is the Moisture Sensitivity Level (MSL) difference, and does it affect usability? A: The IPS021LTR has MSL 1 (unlimited shelf life), while substitutes have MSL 3 (168-hour limit after moisture exposure). MSL 3 components require controlled storage conditions and have a defined floor life after moisture absorption. Standard component handling practices and proper storage will mitigate this consideration for most applications.

Q: Can BTS3134NHUMA1 be used in applications designed for 1.4A operation? A: Yes. The BTS3134NHUMA1 is rated for 3A maximum output current, making it suitable for applications requiring 1.4A or less. The higher current rating and lower Rds On provide improved performance margin and reduced power dissipation without requiring circuit modifications.