ST2052BDR Equivalent & Substitute Parts

Part Overview

The ST2052BDR is a Power Management Integrated Circuit (PMIC) manufactured by STMicroelectronics, classified as a Power Switch/Driver with 1:2 input-to-output ratio configuration. This N-Channel high-side switch operates at 500mA maximum output current and supports load voltages from 2.7V to 5.5V. The device is housed in an 8-SOIC surface mount package and features integrated fault protection including current limiting, over-temperature shutdown, and under-voltage lockout (UVLO).

The ST2052BDR carries an Obsolete product status, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute components must maintain electrical compatibility across critical parameters including output current capacity, voltage ratings, package form factor, and fault protection mechanisms.

Substiute Parts

ST2052BDR

STMicroelectronicsIn Stock: 9220ST2052BDR Datasheet

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TPS2052BD

Texas InstrumentsIn Stock: 3581TPS2052BD Datasheet

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TPS2052BDR

Texas InstrumentsIn Stock: 4513TPS2052BDR Datasheet

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TPS2092D

Texas InstrumentsIn Stock: 2565TPS2092D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST2052BDR is determined by strict alignment across the following critical parameters:

Primary Compatibility Criteria:

• Package form factor: 8-SOIC surface mount only
• Output current capacity: minimum 500mA
• Load voltage range: 2.7V to 5.5V overlap required
• Output configuration: High-side N-Channel
• Number of outputs: 2 channels
• Fault protection: Current limiting, over-temperature, and UVLO required
• Interface type: On/Off control, non-inverting input

Secondary Considerations:

• Input:Output ratio (1:2 preferred; 1:1 acceptable with functional equivalence)
• On-resistance (Rds On): lower values indicate improved performance
• Operating temperature range: extended range preferred for reliability
• Product status: Active or Last Time Buy preferred over Obsolete

The substitute parts identified below satisfy the primary compatibility criteria and maintain functional equivalence within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

TPS2052BDR (Texas Instruments) – Primary Substitute

The TPS2052BDR is the recommended primary substitute for the obsolete ST2052BDR. This device maintains full electrical compatibility across all critical parameters: identical 500mA output current, matching 2.7V–5.5V load voltage range, and equivalent 8-SOIC package footprint. The TPS2052BDR carries Active product status, ensuring long-term availability and supply chain stability. The device features improved on-resistance (70mOhm versus 80mOhm), reducing power dissipation in switching applications. Operating temperature range is −40°C to 85°C (TA), which is narrower than the ST2052BDR but sufficient for most industrial and commercial applications. RoHS3 compliance and MSL 1 rating match the original component. Cut Tape and Digi-Reel packaging options align with the original packaging format.

TPS2052BD (Texas Instruments) – Secondary Substitute

The TPS2052BD provides electrical equivalence with identical 500mA output current and 2.7V–5.5V voltage specifications. This device carries Last Time Buy status, indicating limited future availability. The TPS2052BD is supplied in Tube packaging rather than Cut Tape/Digi-Reel, which may require packaging format conversion for automated assembly processes. On-resistance is 70mOhm, matching the TPS2052BDR. Operating temperature range is −40°C to 85°C (TA). This substitute is suitable for applications where packaging format is not a constraint and where Last Time Buy inventory can be managed within production timelines.

TPS2092D (Texas Instruments) – Limited Substitute

The TPS2092D is functionally limited as a substitute due to reduced maximum output current of 250mA, compared to the 500mA requirement of the ST2052BDR. This device is suitable only for applications where load current does not exceed 250mA per output channel. The TPS2092D carries Active product status and includes a Status Flag feature not present in the original device. Operating temperature range extends to 125°C (TJ), matching the ST2052BDR. On-resistance is 80mOhm, identical to the original. Tube packaging is supplied. This substitute is applicable only to current-limited designs and should not be used as a direct replacement in applications requiring full 500mA output capability.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage protocols. REACH Unaffected status is consistent across all alternatives. ECCN and HTSUS classifications remain unchanged, supporting regulatory and trade compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the TPS2052BDR directly replace the ST2052BDR without circuit modifications?

A: Yes. The TPS2052BDR maintains identical pinout, package footprint (8-SOIC), and electrical specifications across load voltage (2.7–5.5V), output current (500mA), and fault protection features. No circuit modifications are required for direct substitution.

Q: What is the difference between the 1:2 and 1:1 input:output ratios?

A: The input:output ratio describes the relationship between control inputs and switch outputs. The ST2052BDR features a 1:2 ratio (one input controls two outputs), while the TPS2052BD and TPS2052BDR feature a 1:1 ratio. Both configurations support dual-output switching; the ratio difference reflects internal logic architecture. Functional equivalence is maintained for applications requiring independent or synchronized control of two output channels.

Q: Why is the TPS2092D not recommended as a primary substitute?

A: The TPS2092D is limited to 250mA maximum output current, compared to the 500mA specification of the ST2052BDR. This device is suitable only for applications where per-channel load current does not exceed 250mA. Applications requiring full 500mA capability must use TPS2052BD or TPS2052BDR.

Q: What is the significance of "Last Time Buy" status for the TPS2052BD?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this component. Existing inventory is available for purchase, but production will cease. For new designs or long-term production requirements, the Active-status TPS2052BDR is preferred to ensure sustained supply availability.

Q: Are there packaging format differences between substitute options?

A: Yes. The ST2052BDR and TPS2052BDR are supplied in Cut Tape (CT) and Digi-Reel format, suitable for automated pick-and-place assembly. The TPS2052BD and TPS2092D are supplied in Tube packaging, which requires manual handling or reel conversion for automated assembly. Packaging format selection depends on production assembly methodology.

Q: Do all substitute parts support the same operating temperature range?

A: No. The ST2052BDR operates from −40°C to 125°C (TJ). The TPS2052BD and TPS2052BDR operate from −40°C to 85°C (TA). The TPS2092D operates from 0°C to 125°C (TJ). Applications requiring operation above 85°C must use the ST2052BDR or TPS2092D. Applications requiring operation below 0°C must use the ST2052BDR, TPS2052BD, or TPS2052BDR.

Q: What does "Rds On (Typical)" represent, and why does it matter?

A: Rds On is the on-state drain-source resistance of the N-Channel switch. Lower values reduce power dissipation during switching operation. The ST2052BDR and TPS2092D specify 80mOhm, while the TPS2052BD and TPS2052BDR specify 70mOhm. The 10mOhm difference results in approximately 12.5% lower power loss in the TPS2052 variants, improving thermal performance in high-frequency or high-current applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TPS2052BD, TPS2052BDR, TPS2092D) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the ST2052BDR.

Q: What is the recommended substitute for new product designs?

A: The TPS2052BDR is the recommended substitute for new designs. This device offers Active product status, full electrical equivalence, improved on-resistance, and availability in Cut Tape/Digi-Reel packaging compatible with automated assembly processes.