LM2930T-8.0 Equivalent & Substitute Parts

Part Overview

The LM2930T-8.0 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) device. It delivers a fixed positive 8V output at 150mA in a TO-220-3 through-hole package. The device is currently marked as obsolete, making identification of suitable substitute components essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM2930T-8.0
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	8V
Output Current	150mA
Input Voltage (Max)	26V
Dropout Voltage (Max)	0.6V @ 150mA
Package / Case	TO-220-3
Mounting Type	Through Hole
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
Protection Features	Load Dump, Mirror-Image Insertion, Over Temperature, Reverse Polarity, Short Circuit

Substitute Part Grouping Explanation

Substitute parts for the LM2930T-8.0 are identified based on the following critical electrical and mechanical parameters:

Fixed output voltage of 8V
Positive output configuration
Single regulator output
Maximum input voltage of 26V or greater
Through-hole mounting capability
TO-220-3 or compatible package footprint
Output current capability of 150mA or higher
Dropout voltage performance suitable for the application
Protection features including over-temperature and short-circuit protection

Two substitute parts meet these criteria with varying trade-offs in current capacity, dropout voltage, and operating temperature range.

Parameter Comparison

Parameter	LM2930T-8.0	LM2937ET-8.0/NOPB	TL750L08CLP
Manufacturer	Texas Instruments	National Semiconductor	Texas Instruments
Output Voltage (Fixed)	8V	8V	8V
Output Current	150mA	500mA	150mA
Input Voltage (Max)	26V	26V	26V
Dropout Voltage (Max)	0.6V @ 150mA	1V @ 500mA	0.6V @ 150mA
Quiescent Current (Iq)	7 mA	10 mA	2 mA
Package / Case	TO-220-3	TO-220-3	TO-92-3
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 125°C
Product Status	Obsolete	Active	Active
PSRR (120Hz)	52dB	Not specified	65dB
Protection Features	Load Dump, Mirror-Image Insertion, Over Temperature, Reverse Polarity, Short Circuit	Mirror-Image Insertion, Over Temperature, Short Circuit, Transient Voltage	Over Current, Over Temperature, Over Voltage, Reverse Polarity

Engineering Selection Recommendations

LM2937ET-8.0/NOPB is recommended for applications requiring higher output current capacity beyond 150mA. This part is active and available with extended operating temperature range (-40°C ~ 125°C). The increased dropout voltage (1V @ 500mA) must be evaluated against system power budget constraints. This substitute provides enhanced current delivery capability while maintaining the same input voltage specification and TO-220-3 package footprint.

TL750L08CLP is recommended for applications with strict package constraints or space limitations, as it uses a TO-92-3 package. This part is active and offers superior quiescent current performance (2 mA versus 7 mA) and higher PSRR (65dB versus 52dB). The operating temperature range begins at 0°C rather than -40°C, which must be verified against system requirements. This substitute maintains identical output current (150mA) and dropout voltage (0.6V @ 150mA) specifications as the original part.

Both substitutes are active products with current manufacturer support, addressing the obsolescence status of the LM2930T-8.0.

Frequently Asked Questions (FAQ)

Q: Can the LM2937ET-8.0/NOPB directly replace the LM2930T-8.0 in existing designs?

A: The LM2937ET-8.0/NOPB maintains electrical compatibility for the 8V fixed output and 26V maximum input voltage. Both use TO-220-3 packages with identical pinouts. However, the increased dropout voltage (1V @ 500mA versus 0.6V @ 150mA) affects power dissipation and thermal performance. Verify that your application's input voltage headroom accommodates the higher dropout specification.

Q: What are the package differences between the substitute parts?

A: The LM2937ET-8.0/NOPB uses TO-220-3, identical to the original LM2930T-8.0. The TL750L08CLP uses TO-92-3, a smaller through-hole package. PCB layout modifications are required if switching to the TL750L08CLP due to different pin spacing and thermal characteristics.

Q: Which substitute is better for low-power applications?

A: The TL750L08CLP offers superior quiescent current performance at 2 mA compared to 7 mA for the original part and 10 mA for the LM2937ET-8.0/NOPB. This makes the TL750L08CLP more suitable for battery-powered or low-standby-current applications.

Q: Are there temperature range limitations I should consider?

A: The original LM2930T-8.0 operates from -40°C to 85°C. The LM2937ET-8.0/NOPB extends this to -40°C to 125°C. The TL750L08CLP operates from 0°C to 125°C, which may not be suitable for applications requiring -40°C operation.

Q: What is the current capacity difference between these parts?

A: The LM2930T-8.0 and TL750L08CLP both deliver 150mA. The LM2937ET-8.0/NOPB provides 500mA, making it suitable for higher-current applications. Verify your circuit's actual current requirements before selecting a substitute.

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