TPS62320YZDR Equivalent & Substitute Parts

Part Overview

The TPS62320YZDR is a buck switching regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 500mA output current with an adjustable output voltage range from 0.6V to 5.4V, operating from a 2.7V to 6V input supply. The part is currently obsolete, making equivalent substitute components necessary for new designs and production continuity. Identifying compatible alternatives ensures design flexibility while maintaining electrical and mechanical compatibility requirements.

Substiute Parts

TPS62320YZDR

Texas InstrumentsIn Stock: 4355TPS62320YZDR Datasheet

Current PartRFQ

TPS62801YKAR

Texas InstrumentsIn Stock: 9239TPS62801YKAR Datasheet

MFR RecommendedRFQ

TPS62821DLCR

Texas InstrumentsIn Stock: 5282TPS62821DLCR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS62320YZDR are selected based on the following critical parameters that define functional equivalence:

Core Electrical Criteria:

• Function: Step-Down (Buck) topology
• Output Configuration: Positive
• Output Type: Adjustable
• Number of Outputs: Single output
• Synchronous Rectifier: Present
• Voltage - Output (Min): 0.6V minimum (or lower)
• Voltage - Output (Max): Must accommodate application requirements
• Current - Output: Equal to or greater than 500mA
• Voltage - Input Range: Must overlap with 2.7V to 6V input specification

Mechanical & Compliance Criteria:

• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)
• Manufacturer: Texas Instruments (same manufacturer preferred for consistency)

The identified substitutes (TPS62801YKAR and TPS62821DLCR) meet these criteria while offering enhanced specifications in output current capacity and operating temperature range, providing design flexibility for applications requiring higher performance margins.

Parameter Comparison

Engineering Selection Recommendations

TPS62801YKAR is suitable for applications requiring lower input voltage operation (1.8V minimum) and higher output current capacity (1A). This part operates at a higher switching frequency (4MHz) and supports an extended operating temperature range to 125°C. The fixed output voltage option (1.2V) provides an alternative to adjustable configuration. Package differences (6-XFBGA vs. 8-UFBGA) require PCB layout redesign. Active product status ensures long-term availability and supply chain continuity.

TPS62821DLCR maintains the adjustable output voltage range (0.6V minimum) matching the original TPS62320YZDR specification, with doubled output current capacity (1A). Operating temperature extends to 125°C, and the 8-VFDFN package offers different thermal and mechanical characteristics compared to the original 8-UFBGA package. Active product status provides design security and manufacturing support. Switching frequency is lower (2.2MHz) compared to the original device.

Both substitutes are active products from Texas Instruments with ROHS3 compliance and MSL 1 rating, ensuring regulatory compliance and handling flexibility equivalent to the obsolete TPS62320YZDR.

Frequently Asked Questions (FAQ)

Q: Can TPS62801YKAR directly replace TPS62320YZDR in existing designs?

A: Direct replacement requires evaluation of output voltage requirements. TPS62801YKAR offers fixed output options (0.8V, 1.2V) in addition to adjustable configuration, but the maximum output voltage (1.55V) is lower than TPS62320YZDR (5.4V). Package change from 8-UFBGA to 6-XFBGA requires PCB redesign. Higher output current (1A vs. 500mA) and extended temperature range (125°C vs. 85°C) provide performance improvements.

Q: Can TPS62821DLCR directly replace TPS62320YZDR in existing designs?

A: TPS62821DLCR maintains adjustable output voltage range (0.6V to 4V) compatible with TPS62320YZDR applications requiring output voltages up to 4V. Package change from 8-UFBGA to 8-VFDFN requires PCB layout modification. Higher output current (1A vs. 500mA) and extended temperature range (125°C vs. 85°C) provide design margin improvements. Lower switching frequency (2.2MHz vs. 3MHz) affects filter component selection.

Q: What are the key differences in package types between these parts?

A: TPS62320YZDR uses 8-UFBGA (8-pin Ultra Fine Pitch Ball Grid Array), TPS62801YKAR uses 6-XFBGA (6-pin), and TPS62821DLCR uses 8-VFDFN (8-pin Very Fine Pitch Dual Flat No-Lead). Each package has different footprint dimensions, thermal characteristics, and PCB routing requirements. Package selection impacts board layout, thermal management strategy, and manufacturing process compatibility.

Q: Are all three parts RoHS3 compliant?

A: Yes. TPS62320YZDR, TPS62801YKAR, and TPS62821DLCR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent regulatory compliance and handling requirements.

Q: What is the significance of product status (Obsolete vs. Active)?

A: TPS62320YZDR is obsolete, meaning Texas Instruments no longer manufactures or supports this part. TPS62801YKAR and TPS62821DLCR are active products with ongoing manufacturing, technical support, and long-term availability assurance. Active status is critical for new designs requiring supply chain continuity and manufacturer support.

Q: How do switching frequencies affect circuit design?

A: TPS62320YZDR operates at 3MHz, TPS62801YKAR at 4MHz, and TPS62821DLCR at 2.2MHz. Higher switching frequency reduces output filter component size but increases switching losses. Lower frequency reduces losses but requires larger filter components. Frequency change necessitates recalculation of inductor and capacitor values for output ripple and stability requirements.