EY1601SA-ADJ Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The EY1601SA-ADJ is a linear voltage regulator IC from Intel's Enpirion® series, designed for positive adjustable output applications with 50mA current capability in an 8-SOIC package with exposed pad. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The part delivers adjustable output voltage between 2.5V and 12V with input voltage tolerance up to 40V and integrated protection features including over-current and over-temperature monitoring.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Adjustable
Number of Regulators	1
Voltage - Input (Max)	40V
Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	12V
Current - Output	50mA
Voltage Dropout (Max)	0.35V @ 50mA
Current - Quiescent (Iq)	24 µA
PSRR	58dB (100Hz)
Control Features	Enable
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the EY1601SA-ADJ are qualified based on matching the following critical parameters:

Output configuration (Positive)
Output type (Adjustable)
Number of regulators (1)
Voltage input maximum (40V)
Output voltage range (2.5V to 12V)
Current output (50mA)
Quiescent current (24 µA)
PSRR specification (58dB at 100Hz)
Control features (Enable)
Protection features (Over Current, Over Temperature)
Operating temperature range (-40°C ~ 125°C)
Package type (8-SOIC with exposed pad)
Surface mount configuration

The identified substitute parts from Renesas Electronics Corporation meet all these electrical and mechanical parameters, ensuring functional equivalence in circuit applications.

Parameter Comparison

Parameter	EY1601SA-ADJ (Intel)	ISL78307FBECZ-T7A (Renesas)	ISL80136IBEAJZ-T (Renesas)
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Number of Regulators	1	1	1
Voltage - Input (Max)	40V	40V	40V
Voltage - Output (Min/Fixed)	2.5V	2.5V	2.5V
Voltage - Output (Max)	12V	12V	12V
Current - Output	50mA	50mA	50mA
Current - Quiescent (Iq)	24 µA	24 µA	24 µA
PSRR	58dB (100Hz)	58dB (100Hz)	58dB (100Hz)
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Obsolete	Active

Engineering Selection Recommendations

For new designs and production applications requiring EY1601SA-ADJ functionality, the ISL80136IBEAJZ-T from Renesas Electronics Corporation is the primary selection. This part maintains active product status, ensuring long-term availability and manufacturer support. It carries ROHS3 compliance and meets all electrical and mechanical specifications of the original component.

The ISL78307FBECZ-T7A serves as a secondary equivalent option. While classified as obsolete, it provides full parametric equivalence and includes AEC-Q100 automotive qualification, making it suitable for applications requiring automotive-grade components. This part is available in Cut Tape and Digi-Reel packaging options.

Both substitute parts are manufactured by Renesas Electronics Corporation and are pin-compatible with identical package specifications, enabling direct replacement in existing PCB layouts without design modification.

Frequently Asked Questions (FAQ)

Q: Can ISL80136IBEAJZ-T directly replace EY1601SA-ADJ in existing designs?

A: Yes. The ISL80136IBEAJZ-T matches all critical electrical parameters including output voltage range (2.5V to 12V), output current (50mA), quiescent current (24 µA), PSRR (58dB at 100Hz), and protection features. The 8-SOIC package with exposed pad is identical, enabling direct PCB substitution without layout changes.

Q: What is the difference between ISL78307FBECZ-T7A and ISL80136IBEAJZ-T?

A: Both parts are parametrically equivalent. The primary difference is product status: ISL80136IBEAJZ-T is active, while ISL78307FBECZ-T7A is obsolete. ISL78307FBECZ-T7A includes AEC-Q100 automotive qualification. Packaging differs: ISL78307FBECZ-T7A is available in Cut Tape and Digi-Reel, while ISL80136IBEAJZ-T is supplied in Tape & Reel.

Q: Are there any voltage dropout differences between the main part and substitutes?

A: The EY1601SA-ADJ specifies 0.35V dropout at 50mA. ISL80136IBEAJZ-T matches this specification. ISL78307FBECZ-T7A does not provide dropout specification in available documentation but maintains identical output current and quiescent current ratings.

Q: Do the substitute parts support the same enable control feature?

A: Yes. Both ISL78307FBECZ-T7A and ISL80136IBEAJZ-T include Enable control features matching the original EY1601SA-ADJ specification.

Q: Are moisture sensitivity levels identical across all three parts?

A: Yes. EY1601SA-ADJ, ISL78307FBECZ-T7A, and ISL80136IBEAJZ-T all carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.

Q: Which substitute part should be selected for new production?

A: ISL80136IBEAJZ-T is recommended for new production due to active product status, ensuring manufacturer support and long-term availability. It provides identical electrical performance and package compatibility with the obsolete EY1601SA-ADJ.

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