TPS628503DRLR Equivalent & Substitute Parts

Part Overview

The TPS628503DRLR is an active buck switching regulator IC manufactured by Texas Instruments, designed for positive adjustable output voltage regulation with 3A output current capability. This device operates as a step-down converter with a single adjustable output, housed in a SOT-583 surface mount package. The part is currently in active production status with 3776 units in stock inventory.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for buck regulator topology, output current rating, and surface mount packaging compatibility.

Substiute Parts

TPS628503DRLR

Texas InstrumentsIn Stock: 3883TPS628503DRLR Datasheet

Current PartRFQ

RT8015AGQW

Richtek USA Inc.In Stock: 44297RT8015AGQW Datasheet

SimilarRFQ

RT8015BGQW

Richtek USA Inc.In Stock: 17897RT8015BGQW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS628503DRLR are qualified based on the following electrical and mechanical parameters:

Functional Equivalence Criteria:

• Buck (step-down) topology with positive adjustable output
• Single output configuration
• 3A output current rating
• Synchronous rectifier implementation
• Surface mount technology

Electrical Parameter Compatibility:

• Input voltage range overlap: minimum 2.6V to 5.5V (accommodates TPS628503DRLR range of 2.7V to 6V)
• Output voltage adjustability: minimum 0.8V to 5V (accommodates TPS628503DRLR range of 0.6V to 5.5V)
• Switching frequency operation within power management standards

Mechanical Compatibility:

• Surface mount package formats (SOT-583 primary, 10-WFDFN alternative)
• Active product status with current manufacturing availability

The RT8015AGQW and RT8015BGQW devices meet these substitution criteria as functionally equivalent buck regulators with matching output current capacity and adjustable output voltage topology.

Parameter Comparison

Engineering Selection Recommendations

TPS628503DRLR (Primary Part): The TPS628503DRLR remains the primary selection for applications requiring the specified SOT-583 package format and extended operating temperature range to 150°C junction temperature. This device is in active production with substantial inventory availability (3776 units).

RT8015AGQW and RT8015BGQW (Substitute Options): The Richtek RT8015AGQW and RT8015BGQW devices provide functional equivalence as buck regulators with 3A output current and adjustable positive output voltage. Both substitute parts are ROHS3 compliant and in active production status. The RT8015AGQW maintains higher inventory levels (44200 units) compared to RT8015BGQW (17869 units).

Key Differences Affecting Selection:

1. Package Format: TPS628503DRLR uses SOT-583; substitutes use 10-WFDFN Exposed Pad. PCB layout and thermal management considerations differ between these package types.

2. Operating Temperature Range: TPS628503DRLR operates to 150°C junction temperature; substitutes operate to 85°C ambient temperature. Applications requiring extended temperature operation must retain the primary part.

3. Input Voltage Maximum: TPS628503DRLR accepts 6V maximum input; substitutes accept 5.5V maximum input. Applications with input voltages between 5.5V and 6V require the primary part.

4. Output Voltage Minimum: TPS628503DRLR supports 0.6V minimum output; substitutes support 0.8V minimum output. Applications requiring output voltages below 0.8V require the primary part.

5. Switching Frequency Range: TPS628503DRLR operates 1.8MHz to 4MHz; substitutes operate 300kHz to 2MHz. Frequency-dependent design considerations may influence selection.

6. Compliance: Substitute parts carry ROHS3 and REACH certifications; primary part status is not applicable for these standards.

Frequently Asked Questions (FAQ)

Q: Can RT8015AGQW or RT8015BGQW directly replace TPS628503DRLR in existing designs?

A: Direct replacement requires verification of three factors: (1) PCB layout compatibility with different package formats (SOT-583 versus 10-WFDFN), (2) thermal management adequacy given the lower maximum operating temperature of substitutes, and (3) application input voltage and output voltage requirements within the substitute part specifications.

Q: What is the primary difference between RT8015AGQW and RT8015BGQW?

A: Both devices share identical electrical specifications and package format (10-WFDFN Exposed Pad). The primary difference is inventory availability, with RT8015AGQW at 44200 units and RT8015BGQW at 17869 units in stock.

Q: Are there package compatibility issues when substituting TPS628503DRLR with RT8015 devices?

A: Yes. The TPS628503DRLR uses SOT-583 package while RT8015AGQW and RT8015BGQW use 10-WFDFN Exposed Pad package. These packages have different footprints, pin configurations, and thermal characteristics. PCB redesign is required for substitution.

Q: What applications require the TPS628503DRLR instead of substitutes?

A: Applications requiring any of the following must use TPS628503DRLR: (1) input voltages between 5.5V and 6V, (2) output voltages below 0.8V, (3) operating temperatures above 85°C ambient, (4) SOT-583 package format compatibility, or (5) switching frequencies above 2MHz.

Q: Are the substitute parts RoHS compliant?

A: Yes. RT8015AGQW and RT8015BGQW are ROHS3 compliant. The TPS628503DRLR RoHS status is listed as not applicable.

Q: What is the moisture sensitivity level difference between these parts?

A: TPS628503DRLR has MSL 2 (1 Year); RT8015AGQW and RT8015BGQW have MSL 3 (168 Hours). Lower MSL ratings indicate greater sensitivity to moisture exposure during storage and handling.

Q: Can switching frequency differences affect circuit performance?

A: Yes. TPS628503DRLR operates 1.8MHz to 4MHz while substitutes operate 300kHz to 2MHz. Applications with frequency-dependent filtering, EMI considerations, or component selection based on switching frequency must account for this difference.