SP6205EM5-L-3-3 Equivalent & Substitute Parts

Part Overview

The SP6205EM5-L-3-3 is a linear voltage regulator IC manufactured by MaxLinear, Inc., designed to deliver a fixed 3.3V output at 500mA from input voltages up to 5.5V. This device operates in the SOT-23-5 package and includes enable control, over-current protection, and over-temperature protection across an operating range of -40°C to 125°C. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing design support and production continuity.

Key Parameters

Parameter	SP6205EM5-L-3-3
Output Voltage (Fixed)	3.3V
Output Current	500mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.5V @ 500mA
Quiescent Current	100 µA
PSRR	67dB (1kHz)
Package	SOT-23-5
Operating Temperature	-40°C ~ 125°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SP6205EM5-L-3-3 is determined by the following critical parameters:

Output Voltage: Must be fixed at 3.3V
Output Current Capability: Minimum 500mA required for direct replacement; lower-current alternatives (150mA, 200mA, 300mA) are suitable only for applications with reduced current demands
Input Voltage Range: Maximum input of 5.5V or higher
Package Type: SOT-23-5 or TSOT-23-5 (electrically compatible)
Control Features: Enable function required
Protection: Over-current and over-temperature protection mandatory
Operating Temperature: -40°C to 125°C minimum range

Substitute parts are grouped into three categories based on output current capability:

Category 1 (500mA equivalent): No direct 500mA replacements available in active product status.

Category 2 (300mA capability): ADP1712AUJZ-3.3-R7, ADP1713AUJZ-3.3-R7, ADP1714AUJZ-3.3-R7, AP139-33WG-7, MAX8887EZK33+T. Suitable for applications requiring up to 300mA output.

Category 3 (150-200mA capability): ADP1710AUJZ-3.3-R7, ADP1711AUJZ-3.3-R7, AP7115-33WG-7, LDK120M33R, MIC5255-3.3YD5-TR. Suitable for applications requiring up to 200mA output.

Parameter Comparison

Part Number	Manufacturer	Output Current	Dropout Voltage	Quiescent Current	PSRR (1kHz)	Package	Status	Temp Range
SP6205EM5-L-3-3	MaxLinear	500mA	0.5V @ 500mA	100 µA	67dB	SOT-23-5	Obsolete	-40°C ~ 125°C
ADP1712AUJZ-3.3-R7	Analog Devices	300mA	0.27V @ 300mA	70 µA	65dB	TSOT-23-5	Active	-40°C ~ 125°C
ADP1713AUJZ-3.3-R7	Analog Devices	300mA	0.27V @ 300mA	70 µA	72dB	TSOT-23-5	Active	-40°C ~ 125°C
ADP1714AUJZ-3.3-R7	Analog Devices	300mA	0.23V @ 300mA	70 µA	65dB	TSOT-23-5	Active	-40°C ~ 125°C
AP139-33WG-7	Diodes Incorporated	300mA	0.45V @ 300mA	60 µA	75dB ~ 30dB	SOT-25	Last Time Buy	-40°C ~ 85°C
MAX8887EZK33+T	Analog Devices/Maxim	300mA	0.15V @ 300mA	100 µA	60dB	TSOT-23-5	Active	-40°C ~ 85°C
ADP1710AUJZ-3.3-R7	Analog Devices	150mA	0.3V @ 150mA	50 µA	58dB	TSOT-23-5	Active	-40°C ~ 125°C
ADP1711AUJZ-3.3-R7	Analog Devices	150mA	0.3V @ 150mA	50 µA	69dB	TSOT-23-5	Active	-40°C ~ 125°C
AP7115-33WG-7	Diodes Incorporated	150mA	0.3V @ 150mA	80 µA	70dB	SOT-25	Active	-40°C ~ 85°C
LDK120M33R	STMicroelectronics	200mA	0.3V @ 200mA	60 µA	55dB	SOT-23-5	Active	-40°C ~ 125°C
MIC5255-3.3YD5-TR	Microchip Technology	150mA	0.25V @ 150mA	150 µA	60dB ~ 50dB	TSOT-23-5	Active	-40°C ~ 125°C

Engineering Selection Recommendations

For 300mA Applications:

ADP1712AUJZ-3.3-R7, ADP1713AUJZ-3.3-R7, and ADP1714AUJZ-3.3-R7 are all active products from Analog Devices with full temperature range support (-40°C to 125°C), ROHS3 compliance, and unlimited moisture sensitivity rating. ADP1714AUJZ-3.3-R7 offers the lowest dropout voltage (0.23V @ 300mA). MAX8887EZK33+T provides superior dropout performance (0.15V @ 300mA) but operates only to 85°C and carries a 1mA maximum supply current specification. AP139-33WG-7 is classified as Last Time Buy and operates only to 85°C, making it unsuitable for new designs requiring full temperature range operation.

For 200mA Applications:

LDK120M33R from STMicroelectronics is the only active product offering 200mA output in the original SOT-23-5 package with full temperature range (-40°C to 125°C), ROHS3 compliance, and unlimited moisture sensitivity rating.

For 150mA Applications:

ADP1710AUJZ-3.3-R7 and ADP1711AUJZ-3.3-R7 are active Analog Devices products with full temperature range support and ROHS3 compliance. ADP1711AUJZ-3.3-R7 provides higher PSRR (69dB vs 58dB). AP7115-33WG-7 is active but limited to 85°C operation. MIC5255-3.3YD5-TR is active with full temperature range but carries higher quiescent current (150 µA).

Frequently Asked Questions (FAQ)

Q: Can I use a 300mA regulator in place of the 500mA SP6205EM5-L-3-3?

A: Only if your application current demand does not exceed 300mA. The regulator's output current rating must meet or exceed the maximum load current. Using an undersized regulator will cause thermal shutdown or current limiting at lower load levels than the original design intended.

Q: Are TSOT-23-5 and SOT-23-5 packages pin-compatible?

A: Yes. TSOT-23-5 (thin SOT-23-5) and SOT-23-5 are electrically and mechanically compatible. Both use the same 5-pin configuration and 0.95mm pitch. Physical height differences do not affect PCB layout compatibility.

Q: What is the impact of lower dropout voltage in substitute parts?

A: Lower dropout voltage (such as 0.15V in MAX8887EZK33+T versus 0.5V in SP6205EM5-L-3-3) reduces power dissipation and heat generation, improving efficiency. This is beneficial for battery-powered or thermally constrained applications. However, it does not affect output voltage regulation accuracy.

Q: Why do some substitutes have different operating temperature ranges?

A: Operating temperature range is a fundamental design specification. Parts rated only to 85°C (such as AP139-33WG-7 and MAX8887EZK33+T) are unsuitable for applications requiring the full -40°C to 125°C range. Verify your application's temperature requirements before selection.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements and is suitable for use in regulated markets. All recommended active substitutes carry ROHS3 compliance, ensuring regulatory alignment with the original SP6205EM5-L-3-3 design intent.

Q: How does quiescent current affect power consumption?

A: Quiescent current (Iq) is the regulator's internal supply current when no load is connected. Lower Iq reduces standby power consumption. For battery-powered applications with extended idle periods, lower Iq is preferable. Differences range from 50 µA (ADP1710/ADP1711) to 150 µA (MIC5255-3.3YD5-TR).

Q: Can I substitute a part with higher PSRR?

A: Yes. PSRR (Power Supply Rejection Ratio) measures the regulator's ability to reject input voltage noise. Higher PSRR (such as 72dB in ADP1713AUJZ-3.3-R7) provides better noise filtering. This is beneficial for noise-sensitive analog circuits but not detrimental if your application does not require it.

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