MP8801DJ-3.3-LF-P Equivalent & Substitute Parts

Part Overview

The MP8801DJ-3.3-LF-P is a linear voltage regulator IC from Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This positive adjustable fixed output regulator delivers 150mA output current in a surface-mount TSOT-23-5 package. The device is currently in Active product status with 2400 pieces available in original stock.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design revisions necessitate component sourcing from alternative inventory channels.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Number of Regulators	1
Voltage - Input (Max)	6.5V
Voltage - Output (Min/Fixed)	1.25V (3.3V)
Voltage - Output (Max)	5V
Current - Output	150mA
Voltage Dropout (Max)	0.125V @ 150mA (Typ)
Current - Quiescent (Iq)	150 µA
Operating Temperature	-40°C ~ 85°C
Package / Case	SOT-23-5 Thin, TSOT-23-5
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MP8801DJ-3.3-LF-P is determined by the following critical parameters:

Output voltage configuration (Positive, Adjustable/Fixed)
Output current rating (150mA)
Input voltage maximum (6.5V)
Fixed output voltage (3.3V)
Package type (SOT-23-5 Thin, TSOT-23-5)
Mounting type (Surface Mount)
Operating temperature range (-40°C ~ 85°C)
RoHS compliance status

The substitute parts identified maintain electrical equivalence across these parameters. Packaging format differences (Tape & Reel versus Cut Tape & Digi-Reel) represent the primary distinction among qualified substitutes and do not affect electrical performance or PCB-level compatibility.

Parameter Comparison

Parameter	MP8801DJ-3.3-LF-P	MP8801DJ-3.3-LF-Z	MP8903DJ-3.3-LF-P	MP8903DJ-3.3-LF-Z
Manufacturer	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.	Monolithic Power Systems Inc.
Product Status	Active	Active	Not For New Designs	Not For New Designs
Packaging	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)
Output Configuration	Positive	Positive	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)	Adjustable (Fixed)	Adjustable (Fixed)
Voltage - Input (Max)	6.5V	6.5V	6.5V	6.5V
Voltage - Output (Min/Fixed)	1.25V (3.3V)	1.25V (3.3V)	1.25V (3.3V)	1.25V (3.3V)
Voltage - Output (Max)	5V	5V	5V	5V
Current - Output	150mA	150mA	150mA	150mA
Voltage Dropout (Max)	0.125V @ 150mA (Typ)	0.125V @ 150mA (Typ)	0.125V @ 150mA	0.125V @ 150mA
PSRR	70dB ~ 30dB (1kHz ~ 1MHz)	70dB ~ 30dB (1kHz ~ 1MHz)	50dB ~ 20dB (1kHz ~ 1MHz)	50dB ~ 20dB (1kHz ~ 1MHz)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	SOT-23-5 Thin, TSOT-23-5	SOT-23-5 Thin, TSOT-23-5	SOT-23-5 Thin, TSOT-23-5	SOT-23-5 Thin, TSOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory (Pcs)	2400	32100	910	23200

Engineering Selection Recommendations

MP8801DJ-3.3-LF-Z is the primary substitute for new designs. This part maintains identical electrical specifications and ROHS3 compliance while offering significantly higher inventory availability (32100 pieces). The packaging difference (Cut Tape & Digi-Reel versus Tape & Reel) accommodates alternative manufacturing and assembly workflows without affecting circuit performance.

MP8903DJ-3.3-LF-P and MP8903DJ-3.3-LF-Z are parametric equivalents with reduced PSRR performance (50dB ~ 20dB versus 70dB ~ 30dB). Both MP8903 variants carry "Not For New Designs" status, limiting their application to legacy system maintenance or existing inventory utilization only. The MP8903DJ-3.3-LF-Z variant provides higher inventory (23200 pieces) compared to MP8903DJ-3.3-LF-P (910 pieces).

Frequently Asked Questions (FAQ)

Q: Can MP8801DJ-3.3-LF-Z replace MP8801DJ-3.3-LF-P directly on the PCB?

A: Yes. Both parts are electrically identical and use the same SOT-23-5 package. The packaging format difference (Cut Tape & Digi-Reel versus Tape & Reel) affects only the supply and handling method, not PCB placement or circuit operation.

Q: What is the difference between MP8801 and MP8903 series regulators?

A: The primary difference is PSRR (Power Supply Rejection Ratio). MP8801 devices provide 70dB ~ 30dB PSRR across 1kHz ~ 1MHz, while MP8903 devices provide 50dB ~ 20dB. All other electrical parameters remain identical. MP8903 variants are designated "Not For New Designs."

Q: Why are MP8903 parts marked "Not For New Designs"?

A: This designation indicates that Monolithic Power Systems Inc. has discontinued these parts for new applications. Existing inventory remains available for legacy system support only. New designs should use MP8801DJ-3.3-LF-P or MP8801DJ-3.3-LF-Z.

Q: Does packaging format affect circuit performance?

A: No. Tape & Reel (TR) and Cut Tape & Digi-Reel (CT) packaging formats are supply methods only. Once components are removed from packaging and soldered to the PCB, electrical performance is identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four part numbers listed maintain ROHS3 compliance and are suitable for applications requiring environmental regulation adherence.

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