TPS51163DRCT Equivalent & Substitute Parts

Part Overview

The TPS51163DRCT is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments in a 10-VSON (3x3) package. This transistor driver controller operates with a supply voltage range of 4.5V to 13.2V and delivers a 600kHz switching frequency with a maximum duty cycle of 69%. The device includes synchronous rectifier capability, enable control, and power good monitoring features. Currently in Last Time Buy status with 1929 pieces in stock, alternative equivalent parts are necessary for long-term design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Down Buck Regulator Controller
Output Type	Transistor Driver
Topology	Buck
Number of Outputs	1
Voltage Supply Range (Vcc/Vdd)	4.5V ~ 13.2V
Switching Frequency	600kHz
Maximum Duty Cycle	69%
Synchronous Rectifier	Yes
Control Features	Enable, Power Good
Operating Temperature	-40°C ~ 85°C (TA)
Package Type	10-VFDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the TPS51163DRCT is determined by the following critical parameters: buck topology, transistor driver output type, single output configuration, supply voltage range compatibility (4.5V ~ 13.2V minimum), synchronous rectifier capability, enable and power good control features, surface mount packaging in 10-pin DFN form factor, and operating temperature range of -40°C to 85°C or better. Parts meeting these core electrical and mechanical specifications are classified as parametric equivalents. Parts with enhanced specifications (higher switching frequency, adjustable output, higher current rating, or extended temperature range) are classified as manufacturer-recommended upgrades suitable for designs requiring improved performance margins.

Parameter Comparison

Parameter	TPS51163DRCT	TPS51113DRCR	TPS51113DRCT	NCP1589CMNTWG	TPS51397ARJER
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	Texas Instruments
Function	Step-Down Controller	Step-Down Controller	Step-Down Controller	Step-Down Controller	Step-Down Regulator
Output Type	Transistor Driver	Transistor Driver	Transistor Driver	Transistor Driver	Adjustable
Topology	Buck	Buck	Buck	Buck	Buck
Number of Outputs	1	1	1	1	1
Voltage Supply (Vcc/Vdd)	4.5V ~ 13.2V	4.5V ~ 13.2V	4.5V ~ 13.2V	4.5V ~ 13.2V	4.5V ~ 24V
Switching Frequency	600kHz	300kHz	300kHz	300kHz	500kHz, 800kHz
Maximum Duty Cycle	69%	72%	72%	75%	Not specified
Synchronous Rectifier	Yes	Yes	Yes	Yes	Yes
Control Features	Enable, Power Good	Enable, Power Good	Enable, Power Good	Enable, Power Good	Not specified
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-20°C ~ 70°C	-40°C ~ 125°C
Package Type	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad	20-VFQFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount, Wettable Flank	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	2 (1 Year)	2 (1 Year)	2 (1 Year)	1 (Unlimited)	2 (1 Year)
Product Status	Last Time Buy	Active	Active	Active	Active
Current Inventory	1929 Pcs	3404 Pcs	2200 Pcs	6400 Pcs	6400 Pcs

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution):

TPS51113DRCR and TPS51113DRCT are parametric equivalents to the TPS51163DRCT. Both parts maintain identical supply voltage range (4.5V ~ 13.2V), package configuration (10-VFDFN), operating temperature range (-40°C ~ 85°C), control features (Enable, Power Good), and synchronous rectifier capability. The primary difference is switching frequency: TPS51113 series operates at 300kHz versus 600kHz for TPS51163. Both TPS51113 variants are in Active product status with higher inventory availability (3404 and 2200 pieces respectively) compared to the Last Time Buy TPS51163DRCT. These parts are suitable for designs where lower switching frequency is acceptable or beneficial for EMI reduction.

NCP1589CMNTWG from onsemi is a parametric equivalent with identical topology, output type, and control features. It operates at 300kHz switching frequency with a maximum duty cycle of 75% (versus 69% for TPS51163). Operating temperature range is -20°C to 70°C, which is narrower than the TPS51163. This part features MSL rating of 1 (Unlimited) versus MSL 2 for TPS51163, providing superior moisture handling. NCP1589CMNTWG includes wettable flank surface mount technology and has 6400 pieces in stock.

Manufacturer-Recommended Upgrade:

TPS51397ARJER is a manufacturer-recommended upgrade offering enhanced specifications. This integrated buck switching regulator (not a controller) provides adjustable output voltage (0.6V to 5.5V), 10A output current capability, and extended input voltage range (4.5V ~ 24V). Operating temperature extends to -40°C ~ 125°C. The 20-VFQFN package is larger than the 10-pin DFN of TPS51163, requiring PCB layout modification. This part is suitable for designs requiring higher output current, adjustable voltage regulation, or extended temperature performance. Inventory is 6400 pieces in Active status.

Frequently Asked Questions (FAQ)

Q: Can TPS51113DRCR or TPS51113DRCT be used as direct replacements for TPS51163DRCT?

A: Yes, both TPS51113 variants are parametric equivalents. They share identical supply voltage range, package type, operating temperature, and control features. The switching frequency difference (300kHz versus 600kHz) may affect output ripple and component sizing but does not prevent substitution in most applications. Verify that lower switching frequency is compatible with your output filter design.

Q: What is the key difference between NCP1589CMNTWG and the TPS51163DRCT?

A: NCP1589CMNTWG is manufactured by onsemi and operates at 300kHz switching frequency. The operating temperature range is narrower (-20°C to 70°C versus -40°C to 85°C). NCP1589 offers superior moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1-Year) and includes wettable flank surface mount technology. All other electrical parameters and package configuration are equivalent.

Q: When should TPS51397ARJER be selected instead of TPS51163DRCT?

A: TPS51397ARJER is an integrated buck regulator with adjustable output voltage and 10A output current, compared to TPS51163 which is a controller requiring external power stage. Select TPS51397ARJER for designs requiring integrated regulation, higher output current, adjustable voltage output, or extended temperature range to 125°C. Note that the 20-VFQFN package requires different PCB layout than the 10-pin DFN.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts (TPS51113DRCR, TPS51113DRCT, NCP1589CMNTWG, and TPS51397ARJER) are ROHS3 compliant and suitable for applications requiring RoHS compliance.

Q: What is the impact of switching frequency differences on circuit design?

A: Switching frequency affects output filter component selection and size. Lower switching frequency (300kHz) requires larger inductors and capacitors for equivalent ripple performance compared to higher frequency (600kHz). Verify that your output filter design accommodates the selected part's switching frequency before implementation.

Q: Does package size difference affect PCB compatibility?

A: TPS51163DRCT, TPS51113DRCR, TPS51113DRCT, and NCP1589CMNTWG all use 10-pin DFN packages with identical footprints. TPS51397ARJER uses a 20-VFQFN package requiring different PCB layout and footprint. Verify PCB layout compatibility before selecting TPS51397ARJER as a substitute.

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