LP38691DT-2.5 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP38691DT-2.5 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This Surface Mount device delivers 500mA output current with a fixed 2.5V output and operates across an input voltage range up to 10V. The part is classified as Obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications. Active equivalent parts with identical electrical specifications and packaging are available to ensure design continuity.

Substiute Parts

LP38691DT-2.5

Texas InstrumentsIn Stock: 2246LP38691DT-2.5 Datasheet

Current PartRFQ

LP38691DT-2.5/NOPB

Texas InstrumentsIn Stock: 1025LP38691DT-2.5/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP38691DT-2.5 is determined by strict alignment of the following critical parameters:

• Fixed output voltage of 2.5V
• Maximum output current of 500mA
• Maximum input voltage of 10V
• Voltage dropout specification of 0.73V @ 500mA
• TO-252-3 package configuration (DPAK with 2 Leads + Tab)
• Surface Mount mounting type
• Operating temperature range of -40°C to 125°C
• Over Temperature protection feature

The LP38691DT-2.5/NOPB qualifies as a direct equivalent substitute, maintaining identical electrical performance and mechanical compatibility while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LP38691DT-2.5/NOPB is the direct equivalent substitute for the obsolete LP38691DT-2.5. Both parts share identical electrical specifications and mechanical packaging, ensuring pin-for-pin and functional compatibility.

The LP38691DT-2.5/NOPB offers the following advantages:

• Active product status with ongoing manufacturer support and availability
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Identical performance characteristics across all critical electrical parameters
• Same TO-252-3 package footprint for direct PCB compatibility

The transition from LP38691DT-2.5 to LP38691DT-2.5/NOPB requires no circuit modifications or design changes. Both parts are suitable for identical applications requiring a 2.5V, 500mA linear voltage regulator in Surface Mount configuration.

Frequently Asked Questions (FAQ)

Q: Can LP38691DT-2.5/NOPB be used as a direct replacement for LP38691DT-2.5?

A: Yes. The LP38691DT-2.5/NOPB is a direct equivalent with identical electrical specifications, output voltage, current rating, dropout voltage, and TO-252-3 package configuration. No circuit modifications are required.

Q: What is the difference between LP38691DT-2.5 and LP38691DT-2.5/NOPB?

A: The primary differences are product status and compliance certifications. LP38691DT-2.5 is Obsolete with RoHS non-compliance, while LP38691DT-2.5/NOPB is Active with ROHS3 compliance. Electrical performance and packaging are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the TO-252-3 package (DPAK with 2 Leads + Tab, SC-63). Pinout and footprint are identical, allowing direct PCB substitution.

Q: What is the moisture sensitivity level difference, and does it affect selection?

A: LP38691DT-2.5 has MSL 1 (Unlimited), while LP38691DT-2.5/NOPB has MSL 2 (1 Year). MSL 2 requires storage in controlled humidity conditions for one year. This affects handling and storage procedures but not electrical performance or circuit compatibility.

Q: Is the LP38691DT-2.5/NOPB suitable for new designs?

A: Yes. The LP38691DT-2.5/NOPB is an Active product with current manufacturer support, making it the appropriate choice for new designs requiring a 2.5V, 500mA linear voltage regulator in TO-252-3 package.