TPS77018DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS77018DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.8V output at 50mA in SOT-23-5 surface mount packaging. This part is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device provides essential power management functionality with integrated protection features including over-current, over-temperature, and reverse polarity protection, operating across the industrial temperature range of -40°C to 125°C.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	TPS77018DBVRG4
Category	Power Management (PMIC)
Output Voltage	1.8V Fixed
Output Current	50mA
Input Voltage (Max)	10V
Package Type	SOT-23-5 (SC-74A)
Quiescent Current	28 µA
PSRR	60dB (1kHz)
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	-40°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TPS77018DBVRG4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria (Must Match):

Output voltage: 1.8V fixed
Output configuration: Positive
Number of regulators: 1
Input voltage maximum: 10V
Mounting type: Surface Mount
Package type: SOT-23-5 or compatible footprint
Protection features: Over Current, Over Temperature, Reverse Polarity
RoHS compliance: ROHS3 Compliant

Secondary Consideration (Allowable Variation):

Output current: 50mA minimum (higher current ratings are acceptable for drop-in replacement)
Quiescent current: 28 µA baseline (lower values acceptable)
PSRR: 60dB minimum at 1kHz (higher values acceptable)
Product status: Active or Obsolete (both acceptable; Discontinued status requires substitution)

Substitute parts are grouped into two categories: parametric equivalents from Texas Instruments (identical electrical specifications with packaging variations) and manufacturer-recommended alternatives from Torex Semiconductor (higher current capability with compatible footprints).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Quiescent Current	PSRR (1kHz)	Package	Product Status
TPS77018DBVRG4	Texas Instruments	1.8V	50mA	10V	28 µA	60dB	SOT-23-5	Discontinued
TPS77018DBVR	Texas Instruments	1.8V	50mA	10V	28 µA	60dB	SOT-23-5	Active
TPS77018DBVT	Texas Instruments	1.8V	50mA	10V	28 µA	60dB	SOT-23-5	Obsolete
TPS79018DBVR	Texas Instruments	1.8V	50mA	10V	28 µA	85dB	SOT-23-5	Active
TPS79018DBVT	Texas Instruments	1.8V	50mA	10V	28 µA	85dB	SOT-23-5	Active
XC6204B182MR-G	Torex Semiconductor Ltd	1.8V	150mA	10V	120 µA	70dB (10kHz)	SOT-25-5	Active
XC6209B182MR-G	Torex Semiconductor Ltd	1.8V	150mA	10V	50 µA	70dB (10kHz)	SOT-25-5	Active
XC6209F182MR-G	Torex Semiconductor Ltd	1.8V	300mA	10V	50 µA	70dB (10kHz)	SOT-25-5	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended): TPS77018DBVR and TPS79018DBVR are the primary substitutes. Both are active products from Texas Instruments with identical electrical performance to the discontinued TPS77018DBVRG4. TPS77018DBVR maintains exact parameter matching including 60dB PSRR. TPS79018DBVR offers improved PSRR performance at 85dB while maintaining all other specifications. Both are ROHS3 compliant and MSL Level 1 rated.

Tier 2 - Enhanced Performance Alternatives: TPS79018DBVT provides the same electrical performance as TPS79018DBVR with higher inventory availability (652,700 units in stock). This part is suitable when higher PSRR performance is beneficial and tape & reel packaging is acceptable.

Tier 3 - Higher Current Capability: XC6209B182MR-G and XC6209F182MR-G from Torex Semiconductor are manufacturer-recommended alternatives offering 150mA and 300mA output current respectively. These parts maintain 1.8V fixed output and 10V maximum input voltage. XC6209B182MR-G features 50 µA quiescent current, lower than the original part. XC6209F182MR-G provides the highest current capability at 300mA. Both use SOT-25-5 packaging, which is footprint-compatible with SOT-23-5 in most applications. Operating temperature range is -40°C to 85°C. These are suitable for designs requiring higher current delivery or where improved efficiency (lower Iq) is advantageous.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can TPS77018DBVR directly replace TPS77018DBVRG4? A: Yes. TPS77018DBVR is a parametric equivalent with identical electrical specifications (1.8V output, 50mA current, 60dB PSRR, 28 µA quiescent current). The primary difference is product status: TPS77018DBVR is active while TPS77018DBVRG4 is discontinued. Packaging is SOT-23-5 for both.

Q: What is the difference between TPS77018DBVR and TPS79018DBVR? A: Both parts share identical output voltage (1.8V), current (50mA), input voltage (10V), and quiescent current (28 µA). The key difference is PSRR: TPS77018DBVR provides 60dB at 1kHz, while TPS79018DBVR provides 85dB at 1kHz. TPS79018DBVR is preferred for applications requiring superior power supply rejection ratio performance.

Q: Can Torex XC6209 series parts replace the TPS77018DBVRG4? A: Yes, with considerations. XC6209B182MR-G and XC6209F182MR-G maintain the 1.8V output voltage and 10V maximum input voltage. They use SOT-25-5 packaging, which is footprint-compatible with SOT-23-5. Key differences include higher output current (150mA or 300mA versus 50mA), lower quiescent current (50 µA versus 28 µA), and operating temperature range limited to -40°C to 85°C versus -40°C to 125°C. These parts are suitable for designs requiring higher current capability.

Q: Are there packaging differences between substitute options? A: Yes. TPS77018DBVR, TPS77018DBVT, TPS79018DBVR, and TPS79018DBVT all use SOT-23-5 packaging. Torex XC6204B182MR-G, XC6209B182MR-G, and XC6209F182MR-G use SOT-25-5 packaging. SOT-25-5 is footprint-compatible with SOT-23-5 in most PCB layouts, though verification is recommended for space-constrained designs.

Q: Which substitute has the best availability? A: TPS79018DBVT has the highest inventory at 652,700 units in stock. TPS77018DBVR has 20,857 units available. Torex parts range from 1,413 to 6,400 units. Availability should be confirmed with your supplier for production requirements.

Q: Do all substitutes maintain the same protection features? A: TPS77018DBVR, TPS77018DBVT, TPS79018DBVR, and TPS79018DBVT include over-current, over-temperature, and reverse polarity protection. Torex XC6204B182MR-G, XC6209B182MR-G, and XC6209F182MR-G include over-current protection only. Reverse polarity protection is absent in Torex alternatives.

Q: What is the operating temperature range for each substitute? A: Texas Instruments parts (TPS77018 and TPS79018 series) operate from -40°C to 125°C. Torex parts (XC6204 and XC6209 series) operate from -40°C to 85°C. For applications requiring the full -40°C to 125°C range, Texas Instruments substitutes are required.

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