TPS51163DRCR Equivalent & Substitute Parts

Part Overview

The TPS51163DRCR is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments in a 10-VSON (3x3) package. This device functions as a transistor driver for single-output buck topology applications with a 600kHz switching frequency and 69% maximum duty cycle. The part is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications currently using this controller.

Substiute Parts

TPS51163DRCR

Texas InstrumentsIn Stock: 3595TPS51163DRCR Datasheet

Current PartRFQ

TPS51397ARJER

Texas InstrumentsIn Stock: 6442TPS51397ARJER Datasheet

MFR RecommendedRFQ

TPS51113DRCR

Texas InstrumentsIn Stock: 3497TPS51113DRCR Datasheet

Parametric EquivalentRFQ

TPS51113DRCT

Texas InstrumentsIn Stock: 2281TPS51113DRCT Datasheet

Parametric EquivalentRFQ

TPS51163DRCT

Texas InstrumentsIn Stock: 1989TPS51163DRCT Datasheet

Parametric EquivalentRFQ

NCP1589CMNTWG

onsemiIn Stock: 6473NCP1589CMNTWG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS51163DRCR is determined by the following critical parameters: buck topology function, single-output positive configuration, transistor driver output type, 4.5V to 13.2V supply voltage range, synchronous rectifier capability, Enable and Power Good control features, and surface mount 10-pin package compatibility. Substitute parts must maintain these core electrical and mechanical specifications to ensure functional equivalence in existing designs.

Substitutes are grouped into two categories:

Parametric Equivalents (Same Base Specifications): Parts that maintain identical or near-identical electrical characteristics and package form factor, differing only in switching frequency or duty cycle within acceptable operational ranges.

Manufacturer Recommended Alternative (Enhanced Capability): Parts that exceed the original specifications while maintaining backward compatibility through superior performance characteristics and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (10-VSON Package):

TPS51113DRCR and TPS51113DRCT are parametric equivalents with identical package geometry and control feature set. Both are Active status products, providing superior long-term availability compared to the Last Time Buy TPS51163DRCR. The primary difference is switching frequency (300kHz vs. 600kHz), which affects output ripple and component sizing but does not prevent functional substitution in applications tolerant of lower frequency operation. TPS51113DRCR offers higher inventory availability (3404 pcs) and is recommended for immediate replacement needs.

TPS51163DRCT maintains identical electrical specifications to the original TPS51163DRCR but is also designated Last Time Buy. This part is suitable only when 600kHz switching frequency is mandatory and inventory constraints permit.

NCP1589CMNTWG (onsemi) provides parametric equivalence with identical package and control features. This part offers superior moisture sensitivity rating (MSL 1 vs. MSL 2) and is Active status. Operating temperature range is reduced (-20°C to 70°C), which may limit suitability for extended temperature applications. This part is suitable for standard industrial temperature range designs.

For Enhanced Performance (20-VQFN Package):

TPS51397ARJER is a manufacturer-recommended alternative that requires PCB layout redesign due to different package (20-VFQFN vs. 10-VFDFN). This part offers extended input voltage range (4.5V to 24V), higher operating temperature range (-40°C to 125°C), and integrated output current capability (10A). This substitution is appropriate for new designs or redesigns where the enhanced specifications justify layout modification.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and EAR99 export classification. Selection should prioritize Active status products (TPS51113DRCR, TPS51113DRCT, NCP1589CMNTWG, TPS51397ARJER) to ensure long-term supply chain stability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can TPS51113DRCR directly replace TPS51163DRCR without PCB modification?

A: Yes. Both parts use identical 10-VFDFN package geometry and pinout. The primary difference is switching frequency (300kHz vs. 600kHz). PCB layout remains compatible. Design verification is required to confirm that lower switching frequency does not negatively impact output ripple, EMI performance, or component selection in your specific application.

Q: What is the impact of switching frequency difference between TPS51163DRCR (600kHz) and TPS51113DRCR (300kHz)?

A: Lower switching frequency reduces switching losses and may improve efficiency at high load currents but increases output voltage ripple and requires larger output filter components. Input and output capacitor selection must be re-evaluated. Inductor sizing changes accordingly. These are design-level considerations, not compatibility issues.

Q: Is NCP1589CMNTWG suitable for military or extended temperature applications?

A: No. NCP1589CMNTWG operates only to 70°C ambient temperature, compared to 85°C for TPS51163DRCR. Applications requiring -40°C to 85°C operation must use TPS51113DRCR, TPS51113DRCT, or TPS51163DRCT. For extended temperature to 125°C, TPS51397ARJER is required but necessitates PCB redesign.

Q: Why does TPS51397ARJER require PCB redesign if it is a substitute?

A: TPS51397ARJER uses a 20-pin VFQFN package versus the 10-pin VFDFN of the original part. Pin count, spacing, and footprint are different. While electrically compatible, physical layout modification is mandatory. This part is classified as a manufacturer-recommended alternative for new designs rather than a direct drop-in replacement.

Q: What is the difference between TPS51113DRCR and TPS51113DRCT?

A: Both parts are identical in electrical specifications and package. The difference is packaging format: DRCR is Tape & Reel (TR) with 3404 pcs inventory; DRCT is Tape & Reel (TR) with 2200 pcs inventory. Selection depends on procurement quantity and supply availability. Electrical performance is equivalent.

Q: Can I use TPS51163DRCT instead of TPS51163DRCR?

A: Yes, both are identical electrically and mechanically. TPS51163DRCT is also Last Time Buy status with lower inventory (1929 pcs vs. 3540 pcs). For new designs or long-term production, TPS51113DRCR (Active status) is preferred.

Q: Is moisture sensitivity a concern when selecting between these parts?

A: NCP1589CMNTWG has MSL 1 (Unlimited shelf life), while all Texas Instruments parts have MSL 2 (1 Year shelf life). For high-volume or long-lead-time applications, NCP1589CMNTWG offers superior moisture handling. For standard procurement cycles, MSL 2 is acceptable with proper storage and handling.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. HTSUS code 8542.39.0001 applies uniformly. No additional compliance verification is required when substituting between these parts.