MPQ8904DD-LF-Z Equivalent & Substitute Parts

Part Overview

The MPQ8904DD-LF-Z is a linear voltage regulator IC from Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This positive adjustable regulator delivers 500mA output current in an 8-QFN (2x3) surface mount package. The device features Enable and Power Good control functions, along with Over Current and Over Temperature protection. With an active product status and 8,673 units in stock, this component is suitable for new designs requiring adjustable positive voltage regulation in compact form factors.

Substitute parts become necessary when addressing supply chain constraints, packaging preferences, or specific application requirements such as automotive qualification or alternative quiescent current specifications.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Output Configuration	Positive Adjustable
Current Output	500mA
Voltage Input (Max)	6.5V
Voltage Output Range	0.5V to 5V
Voltage Dropout (Max)	0.45V @ 500mA
Quiescent Current	200 µA
Package	8-TFDFN Exposed Pad (8-QFN 2x3)
Operating Temperature	-40°C to 125°C
Control Features	Enable, Power Good
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MPQ8904DD-LF-Z is determined by the following critical parameters:

Mandatory Matching Parameters:

Output Configuration: Positive Adjustable
Current Output: 500mA
Voltage Input (Max): 6.5V
Voltage Output Range: 0.5V to 5V
Package Type: 8-TFDFN Exposed Pad (8-QFN 2x3)
Operating Temperature Range: -40°C to 125°C
Control Features: Enable, Power Good
Protection Features: Over Current, Over Temperature
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

Voltage Dropout (Max): Variations permitted within typical specifications
Quiescent Current (Iq): Variations permitted; lower values indicate improved efficiency
Supply Current (Max): Variations permitted
Packaging Format: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), or standard packaging
Product Status: Active or Not For New Designs
Automotive Qualification: Optional enhancement (AEC-Q100)

All four substitute parts meet the mandatory matching criteria and are therefore electrically and mechanically compatible with the MPQ8904DD-LF-Z.

Parameter Comparison

Parameter	MPQ8904DD-LF-Z	MP2002DD-LF-Z	MP8904DD-LF-P	MP8904DD-LF-Z	MPQ8904DD-AEC1-LF-Z
Manufacturer	MPS Inc.	MPS Inc.	MPS	MPS Inc.	MPS Inc.
Output Configuration	Positive Adjustable	Positive Adjustable	Positive Adjustable	Positive Adjustable	Positive Adjustable
Current Output	500mA	500mA	500mA	500mA	500mA
Voltage Input (Max)	6.5V	6.5V	6.5V	6.5V	6.5V
Voltage Output Range	0.5V to 5V	0.5V to 5V	0.5V to 5V	0.5V to 5V	0.5V to 5V
Voltage Dropout (Max)	0.45V @ 500mA	0.29V @ 500mA (Typ)	0.3V @ 500mA (Typ)	0.3V @ 500mA (Typ)	0.45V @ 500mA
Quiescent Current	200 µA	100 µA	100 µA	100 µA	200 µA
Supply Current (Max)	12 mA	5 mA	5 mA	5 mA	12 mA
Package	8-TFDFN Exposed Pad	8-TFDFN Exposed Pad	8-TFDFN Exposed Pad	8-TFDFN Exposed Pad	8-TFDFN Exposed Pad
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Control Features	Enable, Power Good	Enable, Power Good	Enable, Power Good	Enable, Power Good	Enable, Power Good
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
Product Status	Active	Not For New Designs	Active	Active	Active
Automotive Grade	Standard	Standard	Standard	Standard	AEC-Q100
Packaging Format	Standard	Cut Tape & Digi-Reel®	Tape & Reel	Cut Tape & Digi-Reel®	Cut Tape & Digi-Reel®
Inventory	8,673 Pcs	20,100 Pcs	2,170 Pcs	16,167 Pcs	2,400 Pcs

Engineering Selection Recommendations

For Active Product Status Applications: MP8904DD-LF-P, MP8904DD-LF-Z, and MPQ8904DD-AEC1-LF-Z are all designated as Active products and are suitable for new design implementations. These parts maintain full manufacturer support and are recommended for production designs with long-term availability requirements.

For Improved Power Efficiency: MP2002DD-LF-Z, MP8904DD-LF-P, and MP8904DD-LF-Z offer reduced quiescent current (100 µA versus 200 µA) and lower maximum supply current (5 mA versus 12 mA). These characteristics result in lower standby power consumption and are beneficial for battery-powered or low-power applications.

For Automotive Applications: MPQ8904DD-AEC1-LF-Z includes AEC-Q100 automotive qualification, making it the appropriate selection for automotive-grade designs requiring enhanced reliability and qualification documentation.

For Packaging Flexibility: MP8904DD-LF-P is supplied in Tape & Reel format, while MP2002DD-LF-Z and MP8904DD-LF-Z are available in Cut Tape & Digi-Reel® format. Selection depends on assembly line requirements and volume considerations.

For Supply Chain Optimization: MP2002DD-LF-Z offers the highest inventory availability (20,100 units), followed by MP8904DD-LF-Z (16,167 units), making these options preferable for immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Can MP2002DD-LF-Z be used as a direct replacement for MPQ8904DD-LF-Z?

A: Yes, MP2002DD-LF-Z is electrically and mechanically compatible. However, it carries a "Not For New Designs" product status. Use this part only for legacy system maintenance or when existing designs are already qualified with this component. For new designs, select from the Active status alternatives: MP8904DD-LF-P, MP8904DD-LF-Z, or MPQ8904DD-AEC1-LF-Z.

Q: What is the difference between the dropout voltage specifications?

A: MPQ8904DD-LF-Z and MPQ8904DD-AEC1-LF-Z specify 0.45V maximum dropout at 500mA. MP2002DD-LF-Z, MP8904DD-LF-P, and MP8904DD-LF-Z specify 0.3V typical dropout at 500mA. The lower dropout voltage in the latter group indicates improved efficiency and reduced heat dissipation under full load conditions.

Q: Are all substitute parts pin-compatible with the original MPQ8904DD-LF-Z?

A: Yes. All substitute parts use the identical 8-TFDFN Exposed Pad package (8-QFN 2x3) with matching pinout, control features (Enable, Power Good), and protection mechanisms (Over Current, Over Temperature). Direct PCB layout compatibility is maintained.

Q: Which substitute part should I select for automotive applications?

A: MPQ8904DD-AEC1-LF-Z is the only substitute with AEC-Q100 automotive qualification. Select this part for designs requiring automotive-grade reliability and compliance documentation.

Q: What is the significance of the quiescent current difference?

A: Quiescent current represents the regulator's internal power consumption when delivering no load current. MPQ8904DD-LF-Z and MPQ8904DD-AEC1-LF-Z consume 200 µA, while MP2002DD-LF-Z, MP8904DD-LF-P, and MP8904DD-LF-Z consume 100 µA. Lower quiescent current reduces standby power drain and is advantageous in battery-powered applications or systems with extended idle periods.

Q: Can I mix packaging formats (Cut Tape, Tape & Reel) in the same production run?

A: Yes. All substitute parts are functionally identical and can be used interchangeably from an electrical standpoint. Packaging format selection should be based on assembly equipment compatibility and procurement logistics rather than technical performance.

Q: Is the MPQ8904DD-AEC1-LF-Z suitable for non-automotive applications?

A: Yes. The AEC-Q100 qualification is an additional certification that does not restrict use in non-automotive applications. MPQ8904DD-AEC1-LF-Z can be used in any application where MPQ8904DD-LF-Z is specified, with the added benefit of enhanced qualification documentation.

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