TPS65573DSST Equivalent & Substitute Parts

Part Overview

The TPS65573DSST is a photoflash capacitor charger integrated circuit designed for xenon flash applications. Manufactured by Texas Instruments, this PMIC operates within a 2.5V to 5.5V supply voltage range and delivers 2mA supply current. The device is housed in a 12-WSON (3x2) package with exposed pad for surface mount applications.

The TPS65573DSST carries a "Not For New Designs" product status, indicating that Texas Instruments has discontinued active development and support for this component. This status necessitates identification of equivalent substitute parts for ongoing production requirements, maintenance applications, and new design implementations where photoflash charging functionality is required.

Substiute Parts

TPS65573DSST

Texas InstrumentsIn Stock: 997TPS65573DSST Datasheet

Current PartRFQ

TPS65563ARGTT

Texas InstrumentsIn Stock: 1332TPS65563ARGTT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS65573DSST is determined by the following critical parameters:

Functional Compatibility: Both parts must serve photoflash capacitor charging applications for xenon systems, ensuring equivalent circuit topology and control mechanisms.

Electrical Specifications: Supply voltage range, supply current, and operating temperature range must be compatible or exceed the original part specifications to ensure reliable operation across all intended use conditions.

Compliance & Certification: RoHS3 compliance, REACH status, and MSL ratings must match or exceed the original part to maintain regulatory and environmental standards.

Packaging & Mounting: While package form factors may differ (12-WSON versus 16-VQFN), both must be surface mount with exposed pad configurations suitable for thermal management in photoflash applications.

The TPS65563ARGTT qualifies as a substitute based on these criteria, offering active product status with compatible electrical and compliance specifications.

Parameter Comparison

Engineering Selection Recommendations

The TPS65563ARGTT is the designated manufacturer-recommended substitute for the TPS65573DSST. Both components maintain identical supply current specifications, operating temperature ranges, and compliance certifications (ROHS3, REACH Unaffected, MSL 2).

The primary distinction is product lifecycle status: the TPS65573DSST is designated "Not For New Designs," while the TPS65563ARGTT maintains "Active" status, ensuring continued manufacturer support, availability, and process stability.

The supply voltage range of the TPS65563ARGTT (2.7V ~ 5.5V) is a subset of the TPS65573DSST range (2.5V ~ 5.5V). Applications operating exclusively at or above 2.7V supply voltage will experience no functional impact. Applications requiring operation below 2.7V require evaluation of circuit design alternatives.

Package form factor differs between the two parts (12-WSON versus 16-VQFN). PCB layout modifications and thermal management assessment are necessary during substitution implementation.

Frequently Asked Questions (FAQ)

Q: Can the TPS65563ARGTT directly replace the TPS65573DSST without circuit modifications?

A: Functional substitution is possible for applications operating at supply voltages of 2.7V and above. The 16-VQFN package requires PCB layout redesign compared to the 12-WSON package. Thermal management characteristics may differ due to package geometry changes.

Q: What is the significance of the "Not For New Designs" status on the TPS65573DSST?

A: This status indicates that Texas Instruments has concluded active development and support for this component. Existing inventory may become unavailable, and technical support may be limited. The TPS65563ARGTT, with "Active" status, ensures long-term availability and manufacturer support.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TPS65573DSST and TPS65563ARGTT are ROHS3 compliant with identical MSL ratings of 2 (1 Year), ensuring equivalent environmental and regulatory compliance.

Q: What are the package differences between these two parts?

A: The TPS65573DSST uses a 12-WSON (3x2) package, while the TPS65563ARGTT uses a 16-VQFN (3x3) package. Both are surface mount with exposed pads. The 16-VQFN package is larger and requires PCB footprint redesign.

Q: Is the supply voltage range difference a concern for substitution?

A: The TPS65563ARGTT minimum supply voltage is 2.7V compared to 2.5V for the TPS65573DSST. Applications operating exclusively at 2.7V or higher will function identically. Applications requiring 2.5V to 2.7V operation require alternative component selection.