LP5904TMX-2.8/NOPB Equivalent & Substitute Parts

Part Overview

The LP5904TMX-2.8/NOPB is a linear voltage regulator IC from Texas Instruments, delivering a fixed 2.8V output at 200mA in a 4-DSBGA package. This device is classified as Not For New Designs, indicating it has reached end-of-life status. The part provides positive fixed output configuration with integrated enable control and protection features including over-temperature and short-circuit protection. Due to its discontinued status, equivalent and substitute parts are necessary for ongoing production support and new design alternatives.

Substiute Parts

LP5904TMX-2.8/NOPB

Texas InstrumentsIn Stock: 941LP5904TMX-2.8/NOPB Datasheet

Current PartRFQ

LP5904TME-2.8/NOPB

Texas InstrumentsIn Stock: 1131LP5904TME-2.8/NOPB Datasheet

Parametric EquivalentRFQ

ADP151ACBZ-2.5-R7

Analog Devices Inc.In Stock: 4414ADP151ACBZ-2.5-R7 Datasheet

MFR RecommendedRFQ

ADP151ACBZ-2.75-R7

Analog Devices Inc.In Stock: 4114ADP151ACBZ-2.75-R7 Datasheet

MFR RecommendedRFQ

ADP151ACBZ-2.8-R7

Analog Devices Inc.In Stock: 5223ADP151ACBZ-2.8-R7 Datasheet

MFR RecommendedRFQ

ADP151ACBZ-2.85-R7

Analog Devices Inc.In Stock: 4747ADP151ACBZ-2.85-R7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP5904TMX-2.8/NOPB are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Same Manufacturer): The LP5904TME-2.8/NOPB from Texas Instruments maintains identical electrical specifications including 2.8V fixed output, 200mA current capacity, 0.15V dropout voltage, and 4-DSBGA packaging. The primary distinction is product status: LP5904TME-2.8/NOPB is Active, making it the direct replacement for the discontinued LP5904TMX-2.8/NOPB.

Manufacturer Recommended Alternatives (Analog Devices): The ADP151ACBZ series from Analog Devices provides functional equivalence across multiple output voltage options (2.5V, 2.75V, 2.8V, 2.85V). These parts share the following key parameters with the main part:

• 200mA output current capacity
• 5.5V maximum input voltage
• Positive fixed output configuration
• 4-WLCSP package (0.76x0.76mm footprint)
• Surface mount mounting type
• Enable control feature
• ROHS3 compliance

Substitution is determined by matching output voltage requirements and verifying package compatibility. The ADP151ACBZ-2.8-R7 provides the closest voltage match to the original part.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended for Existing Designs): The LP5904TME-2.8/NOPB is the primary substitute for the LP5904TMX-2.8/NOPB. Both parts are from Texas Instruments with identical electrical and mechanical specifications. The LP5904TME-2.8/NOPB carries Active product status, ensuring long-term availability and manufacturing support. This part requires no design modifications and maintains full compatibility with existing PCB layouts and schematics.

For New Designs and Long-Term Availability: The ADP151ACBZ-2.8-R7 from Analog Devices provides an alternative with Active product status and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). This part delivers the same 2.8V output and 200mA current capacity. The primary design consideration is package transition from 4-DSBGA to 4-WLCSP (0.76x0.76mm), which requires PCB layout verification due to different footprint geometry. The ADP151ACBZ-2.8-R7 features lower quiescent current (20 µA versus 50 µA) and slightly higher dropout voltage (0.2V versus 0.15V).

For Voltage-Flexible Applications: When output voltage tolerance permits, the ADP151ACBZ series offers options at 2.5V, 2.75V, 2.85V, and 2.8V. Selection depends on circuit requirements and available inventory. All variants maintain 200mA output current and 5.5V maximum input voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can LP5904TME-2.8/NOPB be used as a direct drop-in replacement for LP5904TMX-2.8/NOPB? A: Yes. Both parts share identical electrical specifications (2.8V output, 200mA current, 0.15V dropout voltage) and the same 4-DSBGA package. No design changes are required. The LP5904TME-2.8/NOPB is the recommended substitute due to its Active product status.

Q: What are the key differences between the Texas Instruments LP5904 and Analog Devices ADP151ACBZ series? A: Both deliver 200mA at 2.8V with 5.5V maximum input. The LP5904TME-2.8/NOPB uses 4-DSBGA packaging with 0.15V dropout voltage and 50 µA quiescent current. The ADP151ACBZ-2.8-R7 uses 4-WLCSP packaging with 0.2V dropout voltage and 20 µA quiescent current. The ADP151 series extends operating temperature to 125°C and includes additional protection features (Over Current, Under Voltage Lockout).

Q: Is the 4-WLCSP package compatible with 4-DSBGA PCB layouts? A: No. While both are 4-pin packages, 4-WLCSP (0.76x0.76mm) and 4-DSBGA have different footprint geometries. PCB layout redesign is required for ADP151ACBZ substitution. Verify pad dimensions and spacing against the specific package datasheet before layout modification.

Q: Can I use ADP151ACBZ-2.5-R7, ADP151ACBZ-2.75-R7, or ADP151ACBZ-2.85-R7 instead of the 2.8V variant? A: Only if your circuit design permits the alternative output voltage. The ADP151ACBZ-2.8-R7 matches the original 2.8V specification exactly. Using 2.5V, 2.75V, or 2.85V variants requires verification that downstream components tolerate the voltage deviation.

Q: What is the impact of lower quiescent current in the ADP151ACBZ series? A: The ADP151ACBZ series draws 20 µA quiescent current compared to 50 µA in the LP5904. This reduces standby power consumption by 30 µA, beneficial for battery-powered or low-power applications. This is an advantage with no negative impact on functionality.

Q: Are all substitute parts RoHS3 compliant? A: Yes. The LP5904TME-2.8/NOPB and all ADP151ACBZ variants are ROHS3 compliant, matching the original part's environmental certification.