TPS7A0331PDQNR Equivalent & Substitute Parts

Part Overview

The TPS7A0331PDQNR is an active linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 3.1V at 200mA with integrated protection features including over-current, over-temperature, and under-voltage lockout (UVLO) functionality. The regulator operates across an industrial temperature range of -40°C to 125°C and is housed in a compact 4-XDFN exposed pad surface-mount package.

The TPS7A0331PDQNR is currently in active production status with full RoHS3 compliance and REACH unaffected designation. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

TPS7A0331PDQNR

Texas InstrumentsIn Stock: 3374TPS7A0331PDQNR Datasheet

Current PartRFQ

TPS7A0231PDQNR

Texas InstrumentsIn Stock: 3475TPS7A0231PDQNR Datasheet

Parametric EquivalentRFQ

TPS7A0531PDQNR

Texas InstrumentsIn Stock: 1200TPS7A0531PDQNR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS7A0331PDQNR are qualified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Matching Parameters:

• Fixed output voltage of 3.1V
• Output current rating of 200mA
• Surface-mount package configuration (4-XDFN exposed pad)
• Positive output configuration with single regulator
• Enable control feature and integrated protection (over-current, over-temperature, UVLO)
• Operating temperature range of -40°C to 125°C
• RoHS3 compliance and MSL 1 rating

Secondary Compatibility Factors:

• Input voltage maximum rating (6V or lower)
• Voltage dropout characteristics at rated current
• Quiescent current performance
• PSRR specification at 1kHz or broader frequency range

Parts are grouped as parametric equivalents when all critical parameters align and secondary factors remain within acceptable operational bounds for the intended application. Packaging format variations (Tape & Reel versus Cut Tape) do not affect electrical substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

TPS7A0231PDQNR qualifies as a direct parametric equivalent to the TPS7A0331PDQNR. Both devices share identical output voltage, current rating, input voltage maximum, dropout voltage, PSRR specification, and package configuration. The TPS7A0231PDQNR exhibits lower quiescent current (60nA versus 300nA), which represents an operational advantage in low-power standby applications. Both parts maintain active product status with full RoHS3 compliance and MSL 1 rating. The primary distinction is packaging format: TPS7A0231PDQNR is supplied in Cut Tape and Digi-Reel format, while TPS7A0331PDQNR is supplied in Tape & Reel format.

TPS7A0531PDQNR qualifies as a parametric equivalent with operational trade-offs. This device maintains the same output voltage, current rating, and package configuration as the TPS7A0331PDQNR. The TPS7A0531PDQNR features a reduced maximum input voltage rating (5.5V versus 6V) and improved dropout voltage performance (0.308V versus 0.36V at 200mA). However, the TPS7A0531PDQNR exhibits significantly higher quiescent current (3µA versus 300nA) and lower PSRR specification (40dB across 1kHz to 1MHz versus 55dB at 1kHz). Selection of the TPS7A0531PDQNR is appropriate when input voltage is constrained to 5.5V or lower and dropout voltage minimization is a design priority. All three devices maintain active production status, full regulatory compliance, and identical temperature operating range.

Frequently Asked Questions (FAQ)

Q: Can the TPS7A0231PDQNR replace the TPS7A0331PDQNR in existing designs?

A: Yes. The TPS7A0231PDQNR is a direct parametric equivalent with identical electrical specifications for output voltage, current, input voltage maximum, dropout voltage, and PSRR. The primary difference is packaging format (Cut Tape/Digi-Reel versus Tape & Reel). No circuit modifications are required. The lower quiescent current of the TPS7A0231PDQNR may provide improved power efficiency in standby conditions.

Q: What are the limitations of using the TPS7A0531PDQNR as a substitute?

A: The TPS7A0531PDQNR has a reduced maximum input voltage rating of 5.5V compared to the 6V rating of the TPS7A0331PDQNR. Designs operating at input voltages above 5.5V cannot use this substitute. Additionally, the TPS7A0531PDQNR exhibits higher quiescent current (3µA) and lower PSRR (40dB), which may impact power consumption and noise performance in sensitive applications. The improved dropout voltage (0.308V) is beneficial for low-headroom applications.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the identical 4-XDFN exposed pad package configuration (4-X2SON 1x1) with surface-mount mounting type. Pin-to-pin compatibility is confirmed across TPS7A0331PDQNR, TPS7A0231PDQNR, and TPS7A0531PDQNR.

Q: Do packaging format differences affect electrical performance?

A: No. The distinction between Tape & Reel (TR) and Cut Tape (CT) / Digi-Reel packaging formats is purely logistical and does not affect electrical characteristics, performance, or reliability. Both formats contain identical die and package materials.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The TPS7A0331PDQNR, TPS7A0231PDQNR, and TPS7A0531PDQNR are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status.

Q: Which substitute should be selected for lowest power consumption?

A: The TPS7A0231PDQNR offers the lowest quiescent current at 60nA, making it the optimal choice for applications prioritizing minimal standby power draw. The TPS7A0331PDQNR operates at 300nA quiescent current, while the TPS7A0531PDQNR operates at 3µA.

Q: Can the TPS7A0531PDQNR be used in applications requiring 6V input voltage?

A: No. The TPS7A0531PDQNR has a maximum input voltage rating of 5.5V and cannot be used in designs requiring 6V input voltage operation. The TPS7A0331PDQNR and TPS7A0231PDQNR both support 6V maximum input voltage.