SP7805V-L Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The SP7805V-L is a linear voltage regulator IC from MaxLinear, Inc., designed to provide a fixed positive 5V output at 1A current capacity in a TO-220-3 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement. The SP7805V-L operates across an input voltage range up to 18V with a maximum dropout voltage of 2V at 1A, incorporating over-temperature and short-circuit protection features suitable for general-purpose power management applications.

Substiute Parts

SP7805V-L

MaxLinear, Inc.In Stock: 115424SP7805V-L Datasheet

Current PartRFQ

L7805CV

UMWIn Stock: 125416L7805CV Datasheet

MFR RecommendedRFQ

LM340T-5.0/NOPB

Texas InstrumentsIn Stock: 2164LM340T-5.0/NOPB Datasheet

MFR RecommendedRFQ

LT323AT#PBF

Analog Devices Inc.In Stock: 2207LT323AT#PBF Datasheet

MFR RecommendedRFQ

MC7805ABTG

onsemiIn Stock: 2140MC7805ABTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP7805V-L is determined by the following critical parameters: fixed 5V output voltage, TO-220-3 package compatibility, positive output configuration, through-hole mounting, and protection against over-temperature and short-circuit conditions. All substitute parts listed maintain these core electrical and mechanical specifications. Substitute parts are grouped based on output current capacity and maximum input voltage ratings, which define the operational envelope for direct replacement scenarios.

The key substitution criteria are:

• Fixed 5V positive output voltage
• TO-220-3 package / through-hole mounting
• Over-temperature and short-circuit protection
• Output current rating of 1A or greater
• Input voltage rating of 18V or greater

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with current manufacturing status, providing long-term availability and supply chain stability compared to the obsolete SP7805V-L. Selection among the substitute options depends on specific application requirements:

L7805CV from UMW provides a direct functional equivalent with 1.2A output capacity and maintains the -40°C to 105°C operating range. This part is ROHS3 compliant and offers increased current headroom over the original specification.

LM340T-5.0/NOPB from Texas Instruments delivers 1.5A output current with extended input voltage tolerance up to 35V and superior PSRR performance at 80dB. This part maintains full -40°C to 125°C temperature range compatibility and is ROHS3 compliant.

LT323AT#PBF from Analog Devices Inc. provides the highest output current capacity at 3A with input voltage rating of 20V. This part is suitable for applications requiring higher current delivery and is ROHS3 compliant.

MC7805ABTG from onsemi matches the original SP7805V-L specifications most closely, with 1A output current, 2V dropout voltage, and -40°C to 125°C operating range. This part offers the highest PSRR at 83dB and is ROHS3 compliant.

All substitute parts maintain TO-220-3 package compatibility, over-temperature protection, and short-circuit protection features. Selection should be based on application input voltage requirements, output current demands, and temperature operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the L7805CV directly replace the SP7805V-L in all applications?

A: The L7805CV is functionally compatible as a direct replacement for the SP7805V-L in applications requiring up to 1.2A output current. Both parts provide fixed 5V output in TO-220-3 packages with identical quiescent current specifications. The L7805CV operates to 105°C maximum, which is 20°C lower than the SP7805V-L specification. Verify application temperature requirements before substitution.

Q: What is the primary difference between the LM340T-5.0/NOPB and MC7805ABTG?

A: Both parts provide 5V fixed output in TO-220-3 packages with over-temperature and short-circuit protection. The LM340T-5.0/NOPB delivers 1.5A output current versus 1A for the MC7805ABTG. The LM340T-5.0/NOPB has a maximum input voltage of 35V compared to 35V for the MC7805ABTG. The MC7805ABTG maintains the full -40°C to 125°C temperature range of the original SP7805V-L, while the LM340T-5.0/NOPB operates from 0°C minimum.

Q: When should the LT323AT#PBF be selected over other substitutes?

A: The LT323AT#PBF is the appropriate choice for applications requiring output current greater than 1.5A, up to its 3A maximum rating. This part maintains 5V fixed output and TO-220-3 package compatibility. The maximum input voltage is 20V, which exceeds the original SP7805V-L specification of 18V. Select this part only when higher current capacity is a design requirement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all four substitute parts listed are RoHS3 compliant. The original SP7805V-L RoHS status was not specified in the available data. All substitute parts are REACH unaffected and carry EAR99 ECCN classification, matching the original part's regulatory status.

Q: What is the impact of different quiescent current specifications on part selection?

A: The SP7805V-L, L7805CV, and MC7805ABTG all specify 6 mA quiescent current. The LM340T-5.0/NOPB specifies 8 mA. The LT323AT#PBF quiescent current is not specified. For battery-powered or low-power standby applications, the 6 mA specification is preferred. The 2 mA difference between 6 mA and 8 mA parts is typically negligible in mains-powered applications.

Q: Can these parts be used interchangeably in existing PCB designs?

A: All substitute parts use identical TO-220-3 package pinouts and through-hole mounting, allowing direct PCB footprint compatibility. Electrical substitution requires verification that application input voltage does not exceed the substitute part's maximum rating and that output current demand does not exceed the part's specification. Thermal design should account for differences in quiescent current and dropout voltage characteristics.