TPS76433DBVR Equivalent & Substitute Parts

Part Overview

The TPS76433DBVR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications. This Surface Mount device delivers 150mA output current in a compact SOT-23-5 package and is classified as Active product status. The regulator includes integrated protection features for over-current, over-temperature, and reverse polarity conditions, making it suitable for general-purpose power management applications requiring stable 3.3V regulation from input sources up to 10V.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set, enabling design flexibility and supply chain optimization.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	150mA
Input Voltage (Max)	10V
Voltage Dropout (Max)	0.5V @ 150mA
Quiescent Current	100 µA
PSRR	60dB (1kHz)
Package / Case	SC-74A, SOT-753
Operating Temperature Range	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on parametric equivalence:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 3.3V fixed output, 150mA output current, 10V maximum input voltage, 0.5V maximum dropout voltage at rated current, 100 µA quiescent current, and 60dB PSRR at 1kHz. These parts are interchangeable at the functional level and differ only in packaging format (Cut Tape vs. Tape & Reel) or minor device designations within the same product family.

Manufacturer Recommended Substitute (MIC5219-3.3YM5-TR) provides enhanced performance characteristics while maintaining the same output voltage and package form factor. This part is suitable for applications where higher output current capability (500mA vs. 150mA) and lower quiescent current (8 µA vs. 100 µA) provide design advantages.

Key parameters determining substitution eligibility:

Fixed output voltage: 3.3V
Package compatibility: SOT-23-5 (SC-74A, SOT-753)
Output current rating: 150mA (or higher)
Maximum input voltage: 10V or greater
Operating temperature range: -40°C ~ 125°C minimum

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	PSRR	Package	Packaging Format	Product Status
TPS76433DBVR	Texas Instruments	3.3V	150mA	10V	0.5V @ 150mA	100 µA	60dB (1kHz)	SOT-23-5	Cut Tape (CT) & Digi-Reel®	Active
TPS76333DBVR	Texas Instruments	3.3V	150mA	10V	0.5V @ 150mA	100 µA	60dB (1kHz)	SOT-23-5	Cut Tape (CT) & Digi-Reel®	Active
TPS76333DBVT	Texas Instruments	3.3V	150mA	10V	0.5V @ 150mA	100 µA	60dB (1kHz)	SOT-23-5	Cut Tape (CT) & Digi-Reel®	Active
TPS76333QDBVRQ1	Texas Instruments	3.3V	150mA	10V	0.5V @ 150mA	100 µA	60dB (1kHz)	SOT-23-5	Cut Tape (CT) & Digi-Reel®	Active
TPS76433DBVT	Texas Instruments	3.3V	150mA	10V	0.5V @ 150mA	100 µA	60dB (1kHz)	SOT-23-5	Tape & Reel (TR)	Active
MIC5219-3.3YM5-TR	Microchip Technology	3.3V	500mA	12V	0.6V @ 500mA	8 µA	75dB (120Hz)	SOT-23-5	Cut Tape (CT) & Digi-Reel®	Active

Engineering Selection Recommendations

Texas Instruments TPS76333 and TPS76433 Series (Parametric Equivalents): All Texas Instruments substitutes maintain identical electrical performance specifications and are classified as Active products with ROHS3 compliance. Selection between TPS76333DBVR, TPS76333DBVT, TPS76333QDBVRQ1, TPS76433DBVR, and TPS76433DBVT is determined by packaging format requirements and supply chain availability. The TPS76333QDBVRQ1 variant includes AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade components. Cut Tape (CT) & Digi-Reel® packaging is appropriate for lower-volume or mixed-component assembly, while Tape & Reel (TR) format supports high-volume automated production environments.

Microchip Technology MIC5219-3.3YM5-TR (Enhanced Performance Substitute): This part is suitable for applications where the TPS76433DBVR output current rating of 150mA is insufficient. The MIC5219-3.3YM5-TR provides 500mA output current capability with significantly lower quiescent current (8 µA vs. 100 µA), reducing standby power consumption. The maximum input voltage rating of 12V accommodates wider input supply ranges compared to the 10V limit of the TPS76433DBVR. Both devices maintain Active product status and ROHS3 compliance. The MIC5219-3.3YM5-TR is classified as a manufacturer-recommended substitute, indicating validated cross-compatibility for the 3.3V output voltage and SOT-23-5 package form factor.

Frequently Asked Questions (FAQ)

Q: Can TPS76333DBVR be used as a direct replacement for TPS76433DBVR? A: Yes. Both parts are parametric equivalents with identical electrical specifications: 3.3V fixed output, 150mA output current, 10V maximum input voltage, 0.5V maximum dropout voltage, 100 µA quiescent current, and 60dB PSRR. Both are housed in SOT-23-5 packages and maintain Active product status with ROHS3 compliance. The primary difference is packaging format (Cut Tape vs. Tape & Reel).

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging? A: Cut Tape (CT) & Digi-Reel® packaging is supplied on tape that can be cut to length for manual or semi-automated assembly, suitable for prototyping and lower-volume production. Tape & Reel (TR) packaging provides continuous tape on full reels optimized for high-speed automated pick-and-place assembly equipment. Electrical performance is identical; selection depends on assembly process requirements.

Q: Is the MIC5219-3.3YM5-TR a direct replacement for TPS76433DBVR? A: The MIC5219-3.3YM5-TR is a manufacturer-recommended substitute suitable for applications where enhanced performance is beneficial. Both devices provide 3.3V fixed output in SOT-23-5 packages and maintain Active product status with ROHS3 compliance. The MIC5219-3.3YM5-TR offers higher output current (500mA vs. 150mA), lower quiescent current (8 µA vs. 100 µA), and higher maximum input voltage (12V vs. 10V). Substitution is appropriate when these enhanced specifications do not conflict with existing circuit design constraints.

Q: What does AEC-Q100 qualification on TPS76333QDBVRQ1 indicate? A: AEC-Q100 is an automotive industry qualification standard. The TPS76333QDBVRQ1 variant meets automotive-grade reliability and performance requirements. This part is suitable for automotive applications or systems requiring automotive-qualified components. Non-automotive applications can use standard TPS76333 or TPS76433 variants without AEC-Q100 qualification.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts—TPS76333DBVR, TPS76333DBVT, TPS76333QDBVRQ1, TPS76433DBVT, and MIC5219-3.3YM5-TR—are ROHS3 compliant, meeting Restriction of Hazardous Substances requirements for lead-free and restricted material content.

Q: Can I use MIC5219-3.3YM5-TR in a circuit designed for 150mA output current? A: Yes. The MIC5219-3.3YM5-TR is rated for 500mA output current, which exceeds the 150mA requirement. Higher current rating does not create compatibility issues; the device will operate within its specified parameters at lower current levels. The lower quiescent current (8 µA vs. 100 µA) provides additional power efficiency benefit.

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