LP8340CLDX-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP8340CLDX-2.5/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed to deliver a fixed 2.5V output at 1A maximum current in a 6-WSON surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The regulator provides over-current and over-temperature protection suitable for power management applications requiring stable low-voltage rails.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	1A
Input Voltage (Max)	10V
Voltage Dropout (Max)	1.5V @ 1A
Quiescent Current	100 µA
Operating Temperature Range	0°C ~ 125°C
Package Type	6-WSON (2.92x3.29)
Protection Features	Over Current, Over Temperature

Substitute Part Grouping Explanation

Substitution for the LP8340CLDX-2.5/NOPB is determined by the following critical parameters:

Fixed output voltage of 2.5V
Minimum output current capability of 1A
Surface mount technology compatibility
Over-current and over-temperature protection
RoHS3 compliance and MSL Level 1 rating

The two identified substitute parts meet these core electrical requirements while offering different package configurations and enhanced specifications. Substitution is valid when the replacement part maintains or exceeds the output current rating, supports the same fixed output voltage, and provides equivalent protection features.

Parameter Comparison

Parameter	LP8340CLDX-2.5/NOPB (Main)	BA25BC0FP-E2 (Rohm)	LT1965EMS8E-2.5#PBF (Analog Devices)
Manufacturer	Texas Instruments	Rohm Semiconductor	Analog Devices Inc.
Output Voltage	2.5V	2.5V	2.5V
Output Current	1A	1A	1.1A
Input Voltage (Max)	10V	16V	20V
Voltage Dropout (Max)	1.5V @ 1A	Not Specified	0.49V @ 1.1A
Quiescent Current	100 µA	0.5 mA	1.1 mA
Operating Temperature	0°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 125°C
Package Type	6-WSON	TO-252-3 (DPAK)	8-MSOP-EP
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature, Reverse Polarity
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both substitute parts are active products with full RoHS3 compliance and MSL Level 1 ratings, providing long-term supply security compared to the obsolete LP8340CLDX-2.5/NOPB.

The BA25BC0FP-E2 from Rohm Semiconductor maintains the same 1A output current specification and offers a higher maximum input voltage rating of 16V. This part uses a TO-252-3 package, which differs from the original 6-WSON footprint and requires PCB layout redesign.

The LT1965EMS8E-2.5#PBF from Analog Devices provides enhanced specifications including 1.1A output current capability, superior voltage dropout performance (0.49V @ 1.1A versus 1.5V @ 1A), and additional reverse polarity protection. The 8-MSOP-EP package also requires PCB layout modification from the original 6-WSON configuration.

Selection between substitutes depends on PCB layout constraints, input voltage requirements, and thermal performance needs. The LT1965EMS8E-2.5#PBF offers superior electrical performance with lower dropout voltage and higher current capacity, while the BA25BC0FP-E2 provides a simpler alternative with adequate specifications for standard applications.

Frequently Asked Questions (FAQ)

Q: Can the BA25BC0FP-E2 and LT1965EMS8E-2.5#PBF be used interchangeably with the LP8340CLDX-2.5/NOPB?

A: Both parts provide the same 2.5V fixed output voltage and meet or exceed the 1A current requirement. However, package differences (TO-252-3 and 8-MSOP-EP respectively versus 6-WSON) require PCB redesign. Electrical compatibility is confirmed for the specified parameters.

Q: What are the key differences in package footprints?

A: The original LP8340CLDX-2.5/NOPB uses a 6-WSON package (2.92x3.29mm). The BA25BC0FP-E2 uses TO-252-3 (DPAK), a larger through-hole compatible package. The LT1965EMS8E-2.5#PBF uses 8-MSOP-EP, a smaller surface mount package. Each requires distinct PCB layout and thermal management considerations.

Q: Which substitute offers the best thermal performance?

A: The LT1965EMS8E-2.5#PBF demonstrates superior thermal efficiency with a dropout voltage of 0.49V @ 1.1A, compared to the LP8340CLDX-2.5/NOPB at 1.5V @ 1A. Lower dropout voltage reduces power dissipation and heat generation in the regulator.

Q: Are both substitutes suitable for extended temperature range applications?

A: The LT1965EMS8E-2.5#PBF supports the full -40°C to 125°C range matching the original part's upper limit. The BA25BC0FP-E2 operates from -40°C to 105°C, which is adequate for most applications but does not extend to the original's maximum temperature.

Q: Do the substitute parts provide additional protection features?

A: Both substitutes include over-current and over-temperature protection matching the original. The LT1965EMS8E-2.5#PBF adds reverse polarity protection, providing enhanced circuit protection not present in the LP8340CLDX-2.5/NOPB.

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