AS3728-BWLT Equivalent & Substitute Parts

Part Overview

The AS3728-BWLT is a Power Management IC (PMIC) manufactured by ams-OSRAM USA INC., designed for handheld and mobile device applications. This component operates within a supply voltage range of 4.5V to 14V and is housed in a 24-WLCSP (2.37x1.57mm) package. The AS3728-BWLT has reached obsolete product status, necessitating identification of functionally equivalent substitute components to maintain design continuity and ensure supply chain availability for legacy systems and new designs requiring similar power management capabilities.

Substiute Parts

AS3728-BWLT

ams-OSRAM USA INC.In Stock: 1615AS3728-BWLT Datasheet

Current PartRFQ

TPS65186RGZT

Texas InstrumentsIn Stock: 1110TPS65186RGZT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the AS3728-BWLT are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Functional Category: Power Management IC (PMIC) classification
• Application Domain: Handheld/Mobile Device power management
• Mounting Technology: Surface Mount configuration
• Regulatory Compliance: RoHS and REACH compliance status
• Supply Voltage Compatibility: Operating voltage range overlap with original specification
• Operating Temperature Range: Thermal performance within acceptable limits for target applications
• Package Classification: Ball Grid Array (BGA) or similar high-density surface mount packages

The TPS65186RGZT qualifies as a substitute based on its classification as a Power Management PMIC with surface mount packaging, active product status, and full regulatory compliance. While package geometry differs (48-VQFN versus 24-WLCSP), both components serve equivalent power management functions in mobile and display-driven applications.

Parameter Comparison

Engineering Selection Recommendations

AS3728-BWLT Substitution Considerations:

The TPS65186RGZT represents an active, currently manufactured alternative to the obsolete AS3728-BWLT. Selection of this substitute requires evaluation of the following factors based on provided specifications:

Voltage Supply Range Compatibility: The AS3728-BWLT operates across 4.5V to 14V, while the TPS65186RGZT operates across 3V to 6V. Applications requiring supply voltages above 6V cannot use the TPS65186RGZT as a direct substitute without additional voltage regulation circuitry.

Operating Temperature Range: The AS3728-BWLT supports operation from -40°C to 85°C, providing extended low-temperature capability compared to the TPS65186RGZT (-10°C to 85°C). Applications requiring operation below -10°C necessitate alternative component selection or thermal management provisions.

Package and PCB Layout: The AS3728-BWLT uses a 24-WLCSP package (2.37x1.57mm), while the TPS65186RGZT uses a 48-VQFN package (7x7mm). PCB redesign is required for substitution, including routing modifications, thermal management adjustments, and decoupling capacitor repositioning.

Moisture Sensitivity: The AS3728-BWLT carries MSL 1 (unlimited moisture tolerance), while the TPS65186RGZT carries MSL 3 (168-hour limit). Manufacturing environments and storage conditions must accommodate the stricter MSL requirement of the substitute component.

Regulatory and Compliance Status: Both components maintain RoHS and REACH compliance. The TPS65186RGZT's active product status ensures ongoing manufacturer support, documentation updates, and supply chain availability, contrasting with the obsolete status of the AS3728-BWLT.

Frequently Asked Questions (FAQ)

Q: Can the TPS65186RGZT directly replace the AS3728-BWLT without PCB modifications?

A: No. The TPS65186RGZT uses a 48-VQFN package (7x7mm) with 48 pins, while the AS3728-BWLT uses a 24-WLCSP package (2.37x1.57mm) with 24 pins. PCB layout redesign is mandatory, including component placement, trace routing, and power distribution modifications.

Q: What is the maximum supply voltage for the TPS65186RGZT?

A: The TPS65186RGZT operates within a supply voltage range of 3V to 6V. Applications requiring supply voltages exceeding 6V cannot use this component without external voltage regulation.

Q: Are there temperature range limitations when substituting the TPS65186RGZT?

A: Yes. The TPS65186RGZT operates from -10°C to 85°C, compared to the AS3728-BWLT range of -40°C to 85°C. Applications requiring operation below -10°C require alternative component selection or thermal management solutions.

Q: What does MSL 3 (168 Hours) mean for the TPS65186RGZT?

A: MSL 3 indicates the component can absorb moisture for a maximum of 168 hours (7 days) at specified humidity levels before soldering. Extended storage or exposure to high-humidity environments requires baking procedures prior to assembly. The AS3728-BWLT's MSL 1 rating eliminates this requirement.

Q: Is the TPS65186RGZT suitable for handheld and mobile device applications?

A: The TPS65186RGZT is specified for E Ink, Vizplex Display, and OMAP applications. While both components are classified as Power Management PMICs for mobile-class devices, application-specific functional requirements must be verified against detailed datasheets before substitution.

Q: What is the current supply specification for each component?

A: The AS3728-BWLT current supply specification is not provided in the available documentation. The TPS65186RGZT specifies 5.5mA supply current. Detailed datasheets must be consulted for complete power consumption analysis.

Q: Are both components RoHS compliant?

A: Yes. The AS3728-BWLT is RoHS Compliant, and the TPS65186RGZT is ROHS3 Compliant. Both meet current RoHS requirements for new designs and legacy system support.