REG102NA-3/250 Equivalent & Substitute Parts

Part Overview

The REG102NA-3/250 is a linear voltage regulator IC from Texas Instruments, classified as a positive fixed output Power Management IC (PMIC). It delivers 250mA at a fixed 3V output with a maximum dropout voltage of 0.27V at rated current. The device is packaged in SOT-23-5 (SC-74A) surface mount configuration and features integrated over-current and over-temperature protection with an enable control input.

This part carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring 3V fixed output regulation at 250mA or compatible specifications.

Substiute Parts

REG102NA-3/250

Texas InstrumentsIn Stock: 2175REG102NA-3/250 Datasheet

Current PartRFQ

TPS7A2501DRVR

Texas InstrumentsIn Stock: 17394TPS7A2501DRVR Datasheet

MFR RecommendedRFQ

LP2992IM5-3.0/NOPB

Texas InstrumentsIn Stock: 1607LP2992IM5-3.0/NOPB Datasheet

MFR RecommendedRFQ

REG102NA-3/3K

Texas InstrumentsIn Stock: 1729REG102NA-3/3K Datasheet

Parametric EquivalentRFQ

MIC5219-3.0YM5-TR

Microchip TechnologyIn Stock: 2275MIC5219-3.0YM5-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REG102NA-3/250 are classified based on the following substitution criteria:

Parametric Equivalent: Parts maintaining identical or functionally equivalent electrical specifications within the same package form factor.

Manufacturer Recommended: Parts offering enhanced or alternative specifications while maintaining compatibility with the primary application requirements.

The key parameters determining substitutability are:

• Output voltage (3V fixed)
• Output current capability (minimum 250mA)
• Package type (SOT-23-5)
• Input voltage range compatibility (maximum input ≥ 10V)
• Dropout voltage performance
• Operating temperature range
• Protection features (over-current, over-temperature minimum)

Parameter Comparison

Engineering Selection Recommendations

REG102NA-3/3K (Parametric Equivalent)

This part is a direct parametric equivalent with identical electrical specifications and package form factor. Both devices share Last Time Buy status, indicating similar lifecycle positioning. Selection of REG102NA-3/3K provides continuity with equivalent performance characteristics and is suitable for direct substitution in existing designs.

LP2992IM5-3.0/NOPB (Manufacturer Recommended)

This part maintains the same output voltage and current specifications within the SOT-23-5 package. It carries Active product status, ensuring long-term availability. The LP2992IM5-3.0/NOPB features an extended input voltage range (16V maximum) and improved operating temperature range (-40°C to 125°C). Higher quiescent current (95 µA) and dropout voltage (0.85V @ 250mA) represent trade-offs compared to the REG102NA-3/250. This part is suitable for applications where extended temperature operation and higher input voltage tolerance are beneficial.

MIC5219-3.0YM5-TR (Manufacturer Recommended)

This Microchip Technology part offers 500mA output current capability within the same SOT-23-5 package and 3V fixed output configuration. It provides Active product status with extended operating temperature range (-40°C to 125°C). The MIC5219-3.0YM5-TR features superior quiescent current performance (8 µA) and includes reverse polarity protection. The 12V maximum input voltage and 0.6V dropout voltage @ 500mA are compatible with the REG102NA-3/250 application envelope. This part is suitable for designs requiring higher output current capacity or lower quiescent current consumption.

TPS7A2501DRVR (Manufacturer Recommended)

This part offers adjustable output voltage (1.24V to 17.66V) with 300mA output current in a 6-WSON package. It provides Active product status with extended operating temperature range (-40°C to 125°C) and superior quiescent current (4.5 µA). The TPS7A2501DRVR includes additional control features (Power Good output) and protection (Under Voltage Lockout). Package change from SOT-23-5 to 6-WSON requires PCB layout modification. This part is suitable for applications requiring adjustable output voltage or enhanced monitoring capabilities.

Frequently Asked Questions (FAQ)

Q: Can REG102NA-3/3K be used as a direct replacement for REG102NA-3/250?

A: Yes. REG102NA-3/3K is a parametric equivalent with identical output voltage (3V), output current (250mA), dropout voltage (0.27V @ 250mA), quiescent current (500 µA), and package (SOT-23-5). Both parts share Last Time Buy status. No design modifications are required.

Q: What are the key differences between LP2992IM5-3.0/NOPB and REG102NA-3/250?

A: Both parts deliver 3V at 250mA in SOT-23-5 packages. LP2992IM5-3.0/NOPB offers Active product status, extended input voltage range (16V vs. 10V), and extended operating temperature (-40°C to 125°C vs. -40°C to 85°C). Trade-offs include higher quiescent current (95 µA vs. 500 µA) and higher dropout voltage (0.85V vs. 0.27V @ 250mA).

Q: Why does MIC5219-3.0YM5-TR have higher output current (500mA) than REG102NA-3/250 (250mA)?

A: MIC5219-3.0YM5-TR is designed for applications requiring higher current delivery while maintaining the same 3V output and SOT-23-5 package. It can supply up to 500mA, making it suitable for designs with increased power requirements. It remains backward compatible with 250mA load applications.

Q: Is TPS7A2501DRVR a pin-compatible replacement?

A: No. TPS7A2501DRVR uses a 6-WSON (2x2) package, while REG102NA-3/250 uses SOT-23-5. Pin count and layout differ, requiring PCB redesign. However, it offers adjustable output voltage and enhanced features suitable for flexible voltage regulation applications.

Q: Can I use TPS7A2501DRVR configured for 3V output instead of REG102NA-3/250?

A: Yes. TPS7A2501DRVR can be configured for fixed 3V output through external resistor divider network. This requires additional design effort and PCB space compared to fixed-output alternatives. The adjustable architecture provides flexibility for multi-voltage applications.

Q: What is the impact of higher quiescent current in LP2992IM5-3.0/NOPB?

A: LP2992IM5-3.0/NOPB draws 95 µA quiescent current compared to 500 µA in REG102NA-3/250. In battery-powered or low-power standby applications, this difference becomes significant over extended periods. For continuous-load applications, the impact is minimal relative to load current.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. REG102NA-3/250, REG102NA-3/3K, LP2992IM5-3.0/NOPB, MIC5219-3.0YM5-TR, and TPS7A2501DRVR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute part offers the best dropout voltage performance?

A: REG102NA-3/250 and REG102NA-3/3K both offer 0.27V dropout voltage @ 250mA, the lowest among the listed parts. TPS7A2501DRVR provides 0.34V @ 300mA. MIC5219-3.0YM5-TR offers 0.6V @ 500mA. LP2992IM5-3.0/NOPB has 0.85V @ 250mA. Selection depends on application input voltage margin requirements.

Q: What protection features distinguish these regulators?

A: REG102NA-3/250 and REG102NA-3/3K provide over-current and over-temperature protection. LP2992IM5-3.0/NOPB adds short-circuit protection. MIC5219-3.0YM5-TR includes reverse polarity protection. TPS7A2501DRVR includes Under Voltage Lockout (UVLO) and Power Good output for system monitoring.