TPS76918DBVT Equivalent & Substitute Parts

Part Overview

The TPS76918DBVT is a linear voltage regulator IC manufactured by Texas Instruments, delivering a fixed 1.8V output at 100mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating end-of-life status. Alternative equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	1.8V
Output Current	100mA
Input Voltage (Max)	10V
Quiescent Current	28 µA
PSRR	60dB (1kHz)
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are grouped into three categories based on electrical and mechanical compatibility:

Parametric Equivalents (Texas Instruments TPS76918 Series): Parts TPS76918DBVR, TPS76918QDBVRG4Q1, and TPS76918QDBVRQ1 are direct parametric equivalents with identical electrical specifications. Differences exist only in packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Last Time Buy). The automotive-qualified variants (QDBVRG4Q1, QDBVRQ1) include AEC-Q100 certification.

Enhanced Performance Variants (Texas Instruments TPS78918 Series): Parts TPS78918DBVR and TPS78918DBVT maintain identical output voltage, current, and package specifications but feature improved PSRR of 85dB (1kHz) compared to 60dB in the TPS76918 series. These are direct functional upgrades with Active product status.

Alternative Manufacturer Solutions (Higher Current Output): Parts from ABLIC Inc. (S-1200B18-M5T1U, S-L2980A18MC-TF-U) and Torex Semiconductor Ltd (XC6204B182MR-G, XC6209B182MR-G, XC6209F182MR-G) provide 1.8V fixed output in SOT-23-5 or SOT-25-5 packages with output currents ranging from 150mA to 300mA. These support higher current applications while maintaining the same output voltage and package footprint compatibility.

Substitution Criteria:

Fixed output voltage: 1.8V
Surface mount package: SOT-23-5 or SOT-25-5
Operating temperature range: -40°C to 125°C or -40°C to 85°C
Enable control feature
RoHS3 compliance

Parameter Comparison

Part Number	Manufacturer	Output Current	Quiescent Current	PSRR (1kHz)	Package	Product Status	Automotive Grade
TPS76918DBVT	Texas Instruments	100mA	28 µA	60dB	SOT-23-5	Last Time Buy	No
TPS76918DBVR	Texas Instruments	100mA	28 µA	60dB	SOT-23-5	Active	No
TPS76918QDBVRG4Q1	Texas Instruments	100mA	28 µA	60dB	SOT-23-5	Active	Yes (AEC-Q100)
TPS76918QDBVRQ1	Texas Instruments	100mA	28 µA	60dB	SOT-23-5	Active	Yes (AEC-Q100)
TPS78918DBVR	Texas Instruments	100mA	28 µA	85dB	SOT-23-5	Active	No
TPS78918DBVT	Texas Instruments	100mA	28 µA	85dB	SOT-23-5	Active	No
S-1200B18-M5T1U	ABLIC Inc.	150mA	1 µA	70dB	SOT-23-5	Active	No
S-L2980A18MC-TF-U	ABLIC Inc.	150mA	1 µA	70dB	SOT-23-5	Active	No
XC6204B182MR-G	Torex Semiconductor Ltd	150mA	120 µA	70dB (10kHz)	SOT-25-5	Active	No
XC6209B182MR-G	Torex Semiconductor Ltd	150mA	50 µA	70dB (10kHz)	SOT-25-5	Active	No
XC6209F182MR-G	Torex Semiconductor Ltd	300mA	50 µA	70dB (10kHz)	SOT-25-5	Active	No

Engineering Selection Recommendations

Direct Replacement (Identical Specifications): TPS76918DBVR is the primary direct replacement, offering identical electrical performance with Active product status and improved supply availability (4600 pcs in stock vs. 1900 pcs for the original). Both standard and automotive-qualified variants (TPS76918QDBVRG4Q1, TPS76918QDBVRQ1) are available for designs requiring AEC-Q100 certification.

Performance Enhancement Path: TPS78918DBVR and TPS78918DBVT provide superior noise performance with 85dB PSRR, suitable for noise-sensitive applications. These maintain 100% pin and package compatibility while delivering improved power supply rejection ratio.

Higher Current Capability: For applications requiring output currents exceeding 100mA, ABLIC S-1200B18-M5T1U and S-L2980A18MC-TF-U deliver 150mA in the same SOT-23-5 package with significantly lower quiescent current (1 µA). Torex XC6209F182MR-G extends output to 300mA in SOT-25-5 package, requiring PCB layout adjustment but maintaining functional compatibility.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status. Automotive applications must select AEC-Q100 qualified variants (TPS76918QDBVRG4Q1 or TPS76918QDBVRQ1).

Frequently Asked Questions (FAQ)

Q: Can TPS76918DBVR be used as a direct drop-in replacement for TPS76918DBVT?

A: Yes. TPS76918DBVR is a parametric equivalent with identical electrical specifications, output voltage (1.8V), output current (100mA), package (SOT-23-5), and operating temperature range (-40°C to 125°C). The only difference is packaging format (Cut Tape vs. Tape & Reel) and Active product status.

Q: What is the difference between TPS76918 and TPS78918 series?

A: Both series deliver 1.8V at 100mA in SOT-23-5 packages with identical quiescent current (28 µA). The TPS78918 series provides enhanced PSRR of 85dB (1kHz) compared to 60dB in TPS76918, making it suitable for applications requiring superior noise rejection.

Q: Are automotive-qualified variants available?

A: Yes. TPS76918QDBVRG4Q1 and TPS76918QDBVRQ1 are AEC-Q100 qualified automotive-grade variants with identical electrical specifications to the standard TPS76918DBVT.

Q: Can higher current alternatives be used if the application only requires 100mA?

A: Yes. Parts rated for 150mA or 300mA output current are backward compatible with 100mA applications. However, verify package footprint compatibility: ABLIC parts maintain SOT-23-5 footprint, while Torex XC6209 series use SOT-25-5 requiring PCB layout modification.

Q: What is the impact of using parts with different quiescent current specifications?

A: Quiescent current affects standby power consumption. ABLIC parts (1 µA) consume significantly less standby power than Texas Instruments variants (28 µA) or Torex parts (50-120 µA). Select based on application power budget requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting environmental regulatory requirements.

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