TPS2550DRVR Equivalent & Substitute Parts

Part Overview

The TPS2550DRVR is a Power Management IC (PMIC) manufactured by Texas Instruments, classified as a Power Switch/Driver with N-Channel 1:1 configuration. This component operates as a general-purpose high-side switch rated for 1.1A output current with 100mOhm on-resistance, designed for load voltages between 2.5V and 6.5V. The device is marked as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Manufacturer Part Number	TPS2550DRVR
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Switch Type	General Purpose
Output Type	N-Channel
Output Configuration	High Side
Voltage - Load	2.5V ~ 6.5V
Current - Output (Max)	1.1A
Rds On (Typ)	100mOhm
Package / Case	6-WDFN Exposed Pad
Operating Temperature	-40°C ~ 150°C (TJ)
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TPS2550DRVR is determined by the following critical parameters:

Primary Substitution Criteria:

Output Type (N-Channel vs. P-Channel topology)
Voltage - Load range compatibility (2.5V ~ 6.5V for TPS2550DRVR)
Current - Output (Max) rating (1.1A minimum requirement)
Rds On (Typ) performance (100mOhm baseline)
Package / Case form factor (6-WDFN Exposed Pad)
Fault Protection features (Current Limiting, Over Temperature, UVLO)
Operating Temperature range (-40°C ~ 150°C)

Substitution Categories:

Parametric Equivalents (Texas Instruments N-Channel): TPS2550DRVT and TPS2551DRVT maintain identical electrical specifications and N-Channel topology, differing only in packaging format (Tape & Reel variant).
Manufacturer Recommended Alternatives (Cross-Channel Topology): MIC2019YML-TR (Microchip P-Channel), RT9728AHGQW, RT9728AHZQW, and RT9728ALZQW (Richtek P-Channel) provide functional equivalence with modified channel topology. These parts operate at higher current ratings (1.3A to 2A) and lower on-resistance (70mOhm to 120mOhm), suitable for applications where the N-Channel requirement can be adapted to P-Channel architecture.

Parameter Comparison

Parameter	TPS2550DRVR	TPS2550DRVT	TPS2551DRVT	MIC2019YML-TR	RT9728AHGQW	RT9728AHZQW	RT9728ALZQW
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Richtek USA Inc.	Richtek USA Inc.	Richtek USA Inc.
Output Type	N-Channel	N-Channel	N-Channel	P-Channel	P-Channel	P-Channel	P-Channel
Output Configuration	High Side	High Side	High Side	High Side	High Side	High Side	High Side
Voltage - Load	2.5V ~ 6.5V	2.5V ~ 6.5V	2.5V ~ 6.5V	2.5V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V
Current - Output (Max)	1.1A	1.1A	1.1A	2A	1.3A	1.3A	1.3A
Rds On (Typ)	100mOhm	100mOhm	100mOhm	70mOhm	120mOhm	120mOhm	120mOhm
Package / Case	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-VDFN Exposed Pad, 6-MLF®	6-WDFN Exposed Pad	6-WDFN Exposed Pad	6-WDFN Exposed Pad
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Product Status	Not For New Designs	Not For New Designs	Not For New Designs	Active	Active	Active	Active
Fault Protection	Current Limiting (Adjustable), Over Temperature, UVLO	Current Limiting (Adjustable), Over Temperature, UVLO	Current Limiting (Adjustable), Over Temperature, UVLO	Current Limiting (Adjustable), Over Temperature	Current Limiting (Adjustable), Over Temperature, UVLO	Current Limiting (Adjustable), Over Temperature, UVLO	Current Limiting (Adjustable), Over Temperature, UVLO
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (N-Channel Topology Maintained):

TPS2550DRVT and TPS2551DRVT are parametric equivalents to TPS2550DRVR, maintaining identical electrical specifications and N-Channel output configuration. Both parts are marked "Not For New Designs" but remain available in inventory. Selection between these options depends on packaging requirements: TPS2550DRVT and TPS2551DRVT are supplied in Tape & Reel format. These parts are ROHS3 compliant and suitable for applications requiring the original N-Channel architecture.

For Active Product Status (Topology Adaptation Required):

MIC2019YML-TR (Microchip Technology), RT9728AHGQW, RT9728AHZQW, and RT9728ALZQW (Richtek USA Inc.) are active products offering functional substitution with P-Channel topology. These alternatives provide enhanced performance characteristics: MIC2019YML-TR delivers 2A output current and 70mOhm on-resistance; Richtek variants provide 1.3A output current and 120mOhm on-resistance. All substitute parts are ROHS3 compliant. Selection of P-Channel alternatives requires circuit topology adaptation and is suitable for applications where channel polarity can be modified. Richtek parts include Status Flag functionality and UVLO protection, matching the fault protection profile of the original TPS2550DRVR.

Temperature Consideration:

The TPS2550DRVR operates to 150°C junction temperature, while all substitute parts operate to 85°C ambient temperature maximum. Applications requiring extended temperature operation above 85°C ambient must retain the original TPS2550DRVR or TPS2551DRVT.

Frequently Asked Questions (FAQ)

Q: Can TPS2550DRVT directly replace TPS2550DRVR?

A: Yes. TPS2550DRVT is a parametric equivalent with identical electrical specifications, output type (N-Channel), voltage rating (2.5V ~ 6.5V), current rating (1.1A), and on-resistance (100mOhm). The difference is packaging format: TPS2550DRVR is supplied in Tape & Reel format, while TPS2550DRVT is also Tape & Reel. Both are marked "Not For New Designs."

Q: What is the difference between N-Channel and P-Channel substitutes?

A: The TPS2550DRVR uses N-Channel topology for high-side switching. Microchip MIC2019YML-TR and Richtek RT9728 series use P-Channel topology. P-Channel substitution requires circuit redesign to accommodate inverted gate drive logic and different switching characteristics. N-Channel substitutes (TPS2550DRVT, TPS2551DRVT) require no circuit modification.

Q: Are the Richtek RT9728 variants interchangeable?

A: RT9728AHGQW, RT9728AHZQW, and RT9728ALZQW are functionally equivalent P-Channel power switches with identical electrical specifications (1.3A output, 120mOhm on-resistance, 2.5V ~ 5.5V load voltage). Differences are in packaging format and inventory availability. All three include Status Flag functionality and UVLO protection.

Q: Why do substitute parts have lower maximum operating temperature?

A: The TPS2550DRVR specifies 150°C junction temperature (TJ), while substitute parts specify 85°C ambient temperature (TA). Applications operating above 85°C ambient require the original TPS2550DRVR or TPS2551DRVT to maintain thermal margin.

Q: Is MIC2019YML-TR suitable for higher current applications?

A: MIC2019YML-TR provides 2A output current compared to TPS2550DRVR's 1.1A, with lower on-resistance (70mOhm vs. 100mOhm). This part is suitable for applications requiring higher current capacity. However, it uses P-Channel topology and operates to 85°C ambient maximum, requiring circuit adaptation and thermal consideration.

Q: What compliance certifications apply to all parts?

A: All listed parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8542.39.0001. All parts carry MSL 1 (Unlimited) or MSL 3 (168 Hours) moisture sensitivity ratings.

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