TPS709B33DBVR Equivalent & Substitute Parts

Part Overview

The TPS709B33DBVR is an active linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This positive fixed output regulator delivers 150mA at 3.3V and operates across a -40°C to 125°C temperature range. The device is in active product status and widely used in applications requiring stable low-voltage power delivery with integrated protection features. Substitute parts are identified to address inventory availability, packaging preferences, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	150mA
Input Voltage (Max)	30V
Voltage Dropout (Max)	1.4V @ 150mA
Quiescent Current (Iq)	2.05 µA
Package Type	SOT-23-5 (SC-74A)
Mounting Type	Surface Mount
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Reverse Current, UVLO
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Texas Instruments): Parts TPS70933DBVR, TPS70933DBVT, TPS70933QDBVRQ1, TPS709A33DBVR, TPS709A33DBVT, and TPS709B33DBVT share identical electrical specifications with the main part across all critical parameters: 3.3V fixed output, 150mA current capacity, 30V maximum input voltage, 1.4V dropout voltage, and SOT-23-5 packaging. These variants differ only in packaging format (Cut Tape vs. Tape & Reel) or internal revision levels. The TPS70933QDBVRQ1 variant includes automotive-grade qualification (AEC-Q100) with a marginally higher dropout voltage of 1.54V @ 150mA.

Manufacturer Recommended Equivalent (Diodes Incorporated): The AP7383-33WR-7 is a cross-manufacturer substitute from Diodes Incorporated. It maintains the same 3.3V output, 150mA current rating, 30V input maximum, and SOT-25 package footprint. Minor electrical differences include a 1.5V dropout voltage and 3 µA quiescent current. Protection features differ: AP7383 provides Current Limit and Thermal Shutdown versus the TPS709 series' Over Current, Over Temperature, Reverse Current, and UVLO protection.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Package	Packaging Format	Inventory (Pcs)
TPS709B33DBVR	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	8,490
TPS70933DBVR	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	260,528
TPS70933DBVT	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	3,400
TPS70933QDBVRQ1	Texas Instruments	3.3V	150mA	30V	1.54V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	17,300
TPS709A33DBVR	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	10,837
TPS709A33DBVT	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Tape & Reel (TR)	8,845
TPS709B33DBVT	Texas Instruments	3.3V	150mA	30V	1.4V @ 150mA	2.05 µA	SOT-23-5	Cut Tape (CT) & Digi-Reel	1,904
AP7383-33WR-7	Diodes Incorporated	3.3V	150mA	30V	1.5V @ 150mA	3 µA	SOT-25	Tape & Reel (TR)	6,100

Engineering Selection Recommendations

Texas Instruments TPS709/TPS70933 Series: All Texas Instruments variants maintain identical electrical performance and are suitable for direct substitution. Selection among these parts should be based on packaging format availability and inventory levels. The TPS70933DBVR offers the highest inventory (260,528 units), making it the preferred choice for high-volume applications. For automotive applications requiring AEC-Q100 qualification, the TPS70933QDBVRQ1 is the appropriate selection, though the marginally higher dropout voltage (1.54V vs. 1.4V) must be evaluated against system power supply margins.

Diodes Incorporated AP7383-33WR-7: This part is suitable as a cross-manufacturer substitute where supply chain diversification is required. The slightly elevated dropout voltage (1.5V) and quiescent current (3 µA) are within acceptable tolerances for most 3.3V regulation applications. The SOT-25 package is mechanically compatible with SOT-23-5 footprints in most PCB designs. All parts maintain ROHS3 compliance and operate across the full -40°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can TPS70933DBVR be used as a direct replacement for TPS709B33DBVR?

A: Yes. Both parts deliver identical electrical performance: 3.3V output, 150mA current, 1.4V dropout voltage, and SOT-23-5 packaging. The primary difference is internal revision level. Substitution is electrically and mechanically transparent.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) and Digi-Reel packaging are suitable for manual or semi-automated assembly. Tape & Reel (TR) format is optimized for high-speed automated pick-and-place equipment. Electrical performance is identical; selection depends on assembly process requirements.

Q: Is the AP7383-33WR-7 a suitable substitute for the TPS709B33DBVR?

A: Yes, with engineering review. The AP7383-33WR-7 maintains the same 3.3V output and 150mA current rating. The dropout voltage is 1.5V versus 1.4V, and quiescent current is 3 µA versus 2.05 µA. These differences are acceptable in most applications but must be verified against specific power supply margin requirements. Protection feature sets differ between manufacturers.

Q: Can I use TPS70933QDBVRQ1 in non-automotive applications?

A: Yes. The TPS70933QDBVRQ1 is AEC-Q100 qualified for automotive use but is fully functional in commercial and industrial applications. The 1.54V dropout voltage specification should be evaluated against system requirements.

Q: Are all substitute parts RoHS3 compliant?

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

Q: What is the significance of the SOT-23-5 versus SOT-25 package difference?

A: Both are surface-mount packages with identical pin counts and compatible footprints for most applications. SOT-23-5 (SC-74A) and SOT-25 are mechanically interchangeable on standard PCB layouts. Verify footprint compatibility with your specific PCB design.

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