SP6260CEK-L/TR Equivalent & Substitute Parts

Part Overview

The SP6260CEK-L/TR is a linear voltage regulator IC manufactured by MaxLinear, Inc., designed to deliver a fixed 2.5V output at 200mA in a SOT-23-5 surface mount package. This device features an enable control function and over-current protection, operating across the industrial temperature range of -40°C to 85°C. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	200mA
Input Voltage (Max)	6V
Voltage Dropout (Max)	0.5V @ 200mA
Quiescent Current	50 µA
PSRR	70dB (10kHz)
Control Features	Enable
Protection Features	Over Current
Operating Temperature	-40°C ~ 85°C
Package	SOT-23-5 (SC-74A)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the SP6260CEK-L/TR are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Fixed output voltage of 2.5V
Output current capability of 200mA or greater
Maximum input voltage of 6V
SOT-23-5 or equivalent 5-pin surface mount package
Enable control function
Over-current protection
Operating temperature range of -40°C to 85°C or wider

Parts are categorized into two groups: direct replacements (200mA output current) and higher-capacity alternatives (150mA to 600mA output current). Direct replacements maintain identical electrical specifications and package form factors. Higher-capacity alternatives provide increased current headroom while maintaining voltage regulation and control features, suitable for designs requiring additional margin or future scaling.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout (Max)	Quiescent Current	PSRR	Package	Product Status
SP6260CEK-L/TR	MaxLinear, Inc.	2.5V	200mA	6V	0.5V @ 200mA	50 µA	70dB (10kHz)	SOT-23-5	Obsolete
AP2121AK-2.5TRG1	Diodes Incorporated	2.5V	200mA	6V	0.5V @ 200mA	50 µA	70dB (1kHz)	SOT-23-5	Active
AP7311-25WG-7	Diodes Incorporated	2.5V	150mA	6V	0.3V @ 150mA	75 µA	65dB (100Hz)	SOT-25	Active
AP7331-25WG-7	Diodes Incorporated	2.5V	300mA	6V	0.55V @ 300mA	75 µA	65dB (100Hz)	SOT-25	Active
AP7335-25WG-7	Diodes Incorporated	2.5V	300mA	6V	0.2V @ 300mA	80 µA	65dB (1kHz)	SOT-25	Active
AP7365-25WG-7	Diodes Incorporated	2.5V	600mA	6V	0.4V @ 600mA	80 µA	65dB (1kHz)	SOT-25	Active
BU25SD2MG-MTR	Rohm Semiconductor	2.5V	200mA	6V	0.18V @ 100mA	80 µA	68dB (1kHz)	5-SSOP	Active
BU25TD3WG-TR	Rohm Semiconductor	2.5V	200mA	6V	0.54V @ 200mA	60 µA	70dB (1kHz)	5-SSOP	Active
LP3985IM5-2.5/NOPB	Texas Instruments	2.5V	150mA	6V	0.1V @ 150mA	150 µA	50dB ~ 40dB (1kHz ~ 10kHz)	SOT-23-5	Active
LP3985IM5X-2.5/NOPB	Texas Instruments	2.5V	150mA	6V	0.1V @ 150mA	150 µA	50dB ~ 40dB (1kHz ~ 10kHz)	SOT-23-5	Active
LP3990MF-2.5/NOPB	Texas Instruments	2.5V	150mA	6V	0.2V @ 150mA	80 µA	55dB ~ 35dB (1kHz ~ 10kHz)	SOT-23-5	Active

Engineering Selection Recommendations

Direct Replacement (200mA Output Current)

AP2121AK-2.5TRG1 from Diodes Incorporated is the primary direct replacement for SP6260CEK-L/TR. Both devices deliver 200mA at 2.5V with identical dropout voltage specifications and matching PSRR performance at different measurement frequencies. AP2121AK-2.5TRG1 is active and ROHS3 compliant with MSL-3 moisture sensitivity rating.

BU25SD2MG-MTR and BU25TD3WG-TR from Rohm Semiconductor are 200mA alternatives in 5-SSOP packaging. BU25SD2MG-MTR is qualified to AEC-Q100 automotive standards with extended operating temperature to 105°C and superior dropout voltage of 0.18V @ 100mA. BU25TD3WG-TR maintains standard industrial temperature range with 70dB PSRR matching the original part.

Higher-Capacity Alternatives (150mA to 600mA)

For designs requiring increased current margin, the AP7331-25WG-7, AP7335-25WG-7, and AP7365-25WG-7 from Diodes Incorporated provide 300mA and 600mA output capabilities in SOT-25 packaging. AP7335-25WG-7 offers the lowest dropout voltage at 0.2V @ 300mA. All three are active, ROHS3 compliant, and MSL-1 rated.

Texas Instruments LP3985 and LP3990 series devices deliver 150mA in SOT-23-5 packaging, maintaining the original package footprint. LP3985IM5X-2.5/NOPB has the highest inventory availability. LP3990MF-2.5/NOPB provides lower quiescent current at 80 µA. Both are active and ROHS3 compliant.

All substitute parts maintain the required 2.5V fixed output, enable control function, and over-current protection. Selection should be based on specific current requirements, thermal performance needs, and package constraints of the target application.

Frequently Asked Questions (FAQ)

Q: Can AP2121AK-2.5TRG1 be used as a direct drop-in replacement for SP6260CEK-L/TR?

A: Yes. AP2121AK-2.5TRG1 matches the SP6260CEK-L/TR in output voltage (2.5V), output current (200mA), input voltage rating (6V), dropout voltage (0.5V @ 200mA), and SOT-23-5 package. Both include enable control and over-current protection. The primary difference is product status: AP2121AK-2.5TRG1 is active while SP6260CEK-L/TR is obsolete.

Q: What is the difference between SOT-23-5 and SOT-25 packages?

A: SOT-23-5 and SOT-25 are both 5-pin surface mount packages with identical pin counts and electrical functionality. SOT-25 has a slightly larger footprint than SOT-23-5. Parts specified for SOT-25 (AP7311-25WG-7, AP7331-25WG-7, AP7335-25WG-7, AP7365-25WG-7) require PCB layout modifications if direct footprint compatibility is required.

Q: Can I use a 150mA part like LP3985IM5-2.5/NOPB in place of the 200mA SP6260CEK-L/TR?

A: Only if your circuit draws less than 150mA. The LP3985IM5-2.5/NOPB is rated for 150mA maximum output current. Using it in a design requiring 200mA will cause the regulator to enter current-limit protection. Verify actual circuit current draw before substitution.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are fixed output voltage (2.5V), output current capability (minimum 200mA for direct replacement), maximum input voltage (6V), enable control function, and over-current protection. Operating temperature range (-40°C to 85°C minimum) and package type (SOT-23-5 or equivalent 5-pin surface mount) are also essential for mechanical and thermal compatibility.

Q: Why do some parts have lower quiescent current than the original SP6260CEK-L/TR?

A: Quiescent current (Iq) represents the regulator's internal power consumption when supplying no load current. Lower Iq values indicate more efficient designs. Parts like BU25TD3WG-TR (60 µA) and LP3985 series (150 µA) have different internal architectures than SP6260CEK-L/TR (50 µA). The difference is typically negligible in most applications unless operating in ultra-low-power battery-powered systems.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. The original SP6260CEK-L/TR compliance status is not specified in the provided data.

Q: What does MSL-1 versus MSL-3 moisture sensitivity mean for handling?

A: MSL (Moisture Sensitivity Level) indicates how sensitive a component is to moisture absorption during storage and handling. MSL-1 parts have unlimited shelf life and require no special moisture control. MSL-3 parts (such as AP2121AK-2.5TRG1) require storage in dry conditions and have a 168-hour floor life after opening the moisture barrier bag. MSL-1 parts are preferred for standard manufacturing environments.

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