TPS62743YFPR Equivalent & Substitute Parts

Part Overview

The TPS62743YFPR is an active buck switching regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device functions as a step-down converter with programmable output voltage capability, delivering up to 300mA output current. The part is actively manufactured and widely stocked, with 28,400 units available in inventory. Substitute parts are identified when equivalent functional performance is required due to component availability constraints, design optimization needs, or supply chain considerations.

Substiute Parts

TPS62743YFPR

Texas InstrumentsIn Stock: 28504TPS62743YFPR Datasheet

Current PartRFQ

RT5707AWSC

Richtek USA Inc.In Stock: 183514RT5707AWSC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS62743YFPR is determined by the following critical parameters:

• Topology: Buck (step-down) switching regulator configuration
• Output Configuration: Positive voltage output
• Output Type: Programmable voltage setting capability
• Number of Outputs: Single output channel
• Switching Frequency: 1.2MHz operation
• Synchronous Rectification: Integrated synchronous rectifier present
• Input Voltage Compatibility: Minimum 2.15V, maximum 5.5V
• Output Voltage Range: Minimum 1.2V, maximum 3.3V
• Output Current Capability: 300mA minimum requirement
• Package Compatibility: Surface mount, small form factor (8-pin BGA variants)
• Compliance Standards: ROHS3 compliance, REACH unaffected status

The RT5707AWSC qualifies as a substitute based on matching topology, output configuration, programmable output type, single output channel, 1.2MHz switching frequency, synchronous rectification capability, overlapping input voltage range (2.2V to 5.5V), and surface mount packaging. Package form factors differ (8-XFBGA vs. 8-WLCSP), requiring PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS62743YFPR and RT5707AWSC maintain active product status with current manufacturing support. Both components achieve ROHS3 compliance and REACH unaffected status, meeting modern environmental and regulatory requirements.

Selection between these parts should account for the following factors based on provided specifications:

The TPS62743YFPR supports a higher maximum operating junction temperature (125°C vs. 85°C ambient), making it suitable for applications requiring extended thermal performance margins. The TPS62743YFPR also supports output voltage up to 3.3V, compared to 3.1V maximum for the RT5707AWSC.

The RT5707AWSC provides a lower minimum output voltage floor (0.7V vs. 1.2V), enabling applications requiring sub-1.2V regulation. The RT5707AWSC minimum input voltage is 2.2V, compared to 2.15V for the TPS62743YFPR, representing a negligible 0.05V difference.

Package form factor differences (8-XFBGA vs. 8-WLCSP) require verification of PCB footprint compatibility, solder reflow profile compatibility, and board layout constraints before substitution.

Frequently Asked Questions (FAQ)

Q: Can the RT5707AWSC directly replace the TPS62743YFPR in existing designs?

A: Direct replacement requires verification of three factors: (1) PCB footprint compatibility between 8-XFBGA and 8-WLCSP package types, (2) output voltage range requirements within the RT5707AWSC limits (0.7V to 3.1V), and (3) operating temperature requirements within the RT5707AWSC ambient temperature range (-40°C to 85°C). If all three conditions are met, substitution is feasible.

Q: What are the key electrical differences between these parts?

A: The primary electrical differences are: (1) output voltage range—RT5707AWSC minimum is 0.7V versus TPS62743YFPR minimum of 1.2V; (2) maximum output voltage—TPS62743YFPR reaches 3.3V versus RT5707AWSC at 3.1V; (3) operating temperature—TPS62743YFPR supports junction temperatures to 125°C versus RT5707AWSC ambient to 85°C; (4) input voltage minimum—TPS62743YFPR at 2.15V versus RT5707AWSC at 2.2V. Switching frequency and synchronous rectification are identical at 1.2MHz.

Q: Are there package compatibility concerns?

A: Yes. The TPS62743YFPR uses 8-XFBGA packaging while the RT5707AWSC uses 8-WLCSP (1.6x0.90mm) packaging. Although both are 8-pin BGA variants, the physical dimensions and solder ball pitch differ. PCB footprint, reflow profile, and thermal management characteristics must be verified before substitution.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the TPS62743YFPR and RT5707AWSC are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: Which part should be selected for high-temperature applications?

A: The TPS62743YFPR is specified for junction temperatures to 125°C, compared to the RT5707AWSC ambient temperature limit of 85°C. For applications requiring sustained operation above 85°C ambient, the TPS62743YFPR provides superior thermal performance margin.

Q: What output voltage applications favor each part?

A: The RT5707AWSC is preferred for applications requiring output voltages below 1.2V, as its minimum programmable output is 0.7V. The TPS62743YFPR is preferred for applications requiring output voltages above 3.1V, as it supports up to 3.3V. For applications within the overlapping range (1.2V to 3.1V), both parts are electrically compatible.